US20070033929A1 - Apparatus with in situ fuel reformer and associated method - Google Patents

Apparatus with in situ fuel reformer and associated method Download PDF

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Publication number
US20070033929A1
US20070033929A1 US11/202,065 US20206505A US2007033929A1 US 20070033929 A1 US20070033929 A1 US 20070033929A1 US 20206505 A US20206505 A US 20206505A US 2007033929 A1 US2007033929 A1 US 2007033929A1
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United States
Prior art keywords
exhaust gas
fuel
passageway
gas passageway
fuel reformer
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Abandoned
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US11/202,065
Inventor
Clive Telford
Helmut Venghaus
Lee Watts
Andreas Mayr
Marco Ranalli
Peter Kroner
David Herranz
Gregg Speer
Stefan Schmidt
A. Walleck
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Arvin Technologies Inc
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ArvinMeritor Emissions Technologies GmbH
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Priority to US11/202,065 priority Critical patent/US20070033929A1/en
Assigned to ARVINMERITOR EMISSIONS TECHNOLOGIES GMBH reassignment ARVINMERITOR EMISSIONS TECHNOLOGIES GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: WALLECK, A. STEVEN, HERRANZ, DAVID, TELFORD, CLIVE D., MAYR, ANDREAS, RANALLI, MARCO, SPEER, GREGG, KRONER, PETER, SCHMIDT, STEFAN, VENGHAUS, HELMUT, WATTS, LEE
Priority to PCT/US2006/030777 priority patent/WO2007021655A2/en
Publication of US20070033929A1 publication Critical patent/US20070033929A1/en
Assigned to ARVIN TECHNOLOGIES, INC. reassignment ARVIN TECHNOLOGIES, INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: ARVINMERITOR EMISSIONS TECHNOLOGIES GMBH
Abandoned legal-status Critical Current

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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/24Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
    • F01N3/26Construction of thermal reactors

Definitions

  • the present disclosure relates generally to exhaust systems and fuel reformers.
  • Fuel reformers may be used for a variety of purposes. In some cases, for example, fuel reformers are used in the process of regenerating emission abatement devices such as NOx traps and particulate traps. In other cases, fuel reformers are used to provide hydrogen (H 2 ) to an internal combustion engine to enhance the fuel combustion process.
  • H 2 hydrogen
  • an apparatus having parallel and coaxial first and second exhaust gas passageways.
  • a fuel reformer is positioned in the first exhaust gas passageway and configured to partially combust fuel supplied to the first exhaust gas passageway with oxygen from exhaust gas present in the first exhaust gas passageway to generate partial combustion product. Placement of the fuel reformer in the first exhaust gas passageway facilitates control of the air-to-fuel ratio of the flow delivered to the fuel reformer and thus facilitates generation of the partial combustion product.
  • a component is fluidly coupled to the first and second exhaust gas passageways to receive the partial combustion product from the first exhaust gas passageway and exhaust gas from the second exhaust gas passageway.
  • the component may be, for example, an emission abatement device (e.g., a NOx trap, a particulate abatement device, a selective catalytic reduction device, or any combination thereof) or an internal combustion engine.
  • the fuel reformer is a catalyst.
  • the catalyst is activated by the heat of the exhaust gas in the first exhaust gas passageway and catalyzes a chemical reaction to partially combust the fuel into hydrogen (H 2 ) and carbon monoxide (CO) which are useful in the regeneration of NOx traps and particulate abatement devices and may also be useful with selective catalytic reduction devices.
  • the hydrogen (H 2 ) is also useful for enhancement of combustion of an internal engine.
  • FIG. 1 is a simplified block diagram showing a first apparatus with an “in situ” fuel reformer positioned in an exhaust gas passageway to generate partial combustion product (e.g., H 2 and CO) for use in conjunction with an emission abatement device;
  • partial combustion product e.g., H 2 and CO
  • FIG. 2 is a simplified block diagram showing a second apparatus with the “in situ” fuel reformer configured to generate partial combustion product provided to an internal combustion engine to enhance the combustion process in the engine;
  • FIG. 3 is a diagrammatic view showing a first coaxial parallel flow arrangement for use with the first and second apparatus
  • FIG. 3 a is a diagrammatic view showing a second coaxial parallel flow arrangement for use with the first and second apparatus.
  • FIG. 4 is a diagrammatic view showing a non-coaxial parallel flow arrangement for use with the first and second apparatus.
  • an apparatus 10 configured to generate partial combustion product such as hydrogen (H 2 ) and/or carbon monoxide (CO) for use in conjunction with a downstream component such as an emission abatement device 12 . It does so by diverting a portion of a stream of exhaust gas (“EG” in the drawings) to flow into a first exhaust gas passageway 14 containing an “in situ” fuel reformer 16 configured, for example, as a catalyst.
  • the fuel reformer 16 partially combusts a hydrocarbon fuel (e.g., diesel fuel) supplied to the passageway 14 with oxygen from exhaust gas present in the passageway 14 to produce the partial combustion product for delivery to the emission abatement device 12 .
  • the remainder of the exhaust gas passes through an exhaust gas passageway 18 parallel to the passageway 14 .
  • Such an arrangement facilitates control of the air-to-fuel ratio of the flow delivered to the fuel reformer 16 and thus facilitates generation of the partial combustion product. Further, since oxygen of the exhaust gas is used, it avoids the need for a supplemental source of oxygen. In addition, an ignition source is not needed because the heat of the exhaust gas is sufficient for the partial combustion reaction.
  • the system 10 includes an internal combustion engine 20 (e.g., a diesel engine), a parallel flow arrangement 22 , and the emission abatement device 12 .
  • the engine 20 produces the exhaust gas which flows through an exhaust gas supply passageway 24 .
  • the parallel flow arrangement 22 then divides the exhaust gas stream to flow into the parallel passageways 14 , 18 .
  • a portion of the exhaust gas flows into the passageway 14 containing the fuel reformer 16 .
  • the other portion of the exhaust gas flows into the passageway 18 .
  • the passageways 14 , 18 recombine downstream from the fuel reformer 16 into a downstream exhaust gas passageway 25 which delivers the H 2 and/or CO produced by the fuel reformer 16 and the exhaust gas from the passageway 18 to the emission abatement device 12 .
  • the emission abatement device 12 may be, for example, a NOx trap, a selective catalytic reduction (SCR) device, or a particulate abatement device.
  • a NOx trap is used to remove NOx from the exhaust gas. It does so by trapping NOx present in the exhaust gas under lean conditions (as is normally the case in diesel exhaust) and reducing the trapped NOx to nitrogen under rich conditions when the fuel reformer 16 is operated to produce the partial combustion product.
  • the partial combustion product e.g., H2, CO
  • the partial combustion product can be used to desulphate the NOx trap 16 .
  • An SCR device operates in conjunction with the partial combustion product to convert NOx into nitrogen without the need to first trap the NOx and then release and reduce the NOx.
  • the SCR device is “selective” in the sense that it catalyzes a reaction between the partial combustion product (e.g., H 2 , CO) generated by the fuel reformer 16 and NOx present in the exhaust gas. The NOx is thereby removed from the exhaust gas.
  • the partial combustion product e.g., H 2 , CO
  • a particulate abatement device is used to remove particulates from the exhaust gas. It may take the form of a particulate trap (catalyzed or uncatalyzed) alone or in combination with an upstream oxidation catalyst (e.g., diesel oxidation catalyst).
  • the partial combustion product e.g., H 2 , CO
  • the partial combustion product may be oxidized in the presence of the catalyst of a catalyzed particulate trap or in the presence of an upstream oxidation catalyst to generate heat useful for burning off particulate matter trapped by the particulate trap so as to regenerate the particulate trap.
  • the emission abatement device 12 may include any combination of a NOx trap, an SCR device, and a particulate abatement device.
  • a NOx trap an SCR device
  • a particulate abatement device One such combination example is an SCR device and a particulate trap.
  • Fuel is supplied to the passageway 14 by a fuel supplier 26 .
  • a fuel line 28 of the fuel supplier 26 is coupled to the passageway 14 to supply fuel to passageway 14 upstream from the fuel reformer 16 .
  • the fuel may be, for example, diesel fuel in liquid form or as a vapor.
  • the fuel supplier 26 is not coupled to the passageway 18 .
  • the system 10 may be used with or without an exhaust gas valve 30 to control flow of the exhaust gas between passageways 14 , 18 .
  • the valve 30 may be located in either passageway 14 , 18 or at the upstream junction of the two passageways 14 , 18 .
  • a controller 32 is electrically coupled to the fuel supplier 26 via an electrical line 34 and, when the valve 30 is included, it is electrically coupled to the valve 30 via an electrical line 36 to control operation of the fuel supplier 26 and the valve 30 .
  • the controller 32 is thus able to vary the injection rate of fuel into passageway 14 and/or vary admission of exhaust gas and thus oxygen into passageway 14 . In so doing, the controller 32 is able to control the air-to-fuel ratio of the flow delivered to the fuel reformer 16 to facilitate generation of the partial combustion product by the fuel reformer 16 .
  • the controller 32 may cycle operation of the fuel supplier 26 so as to provide fuel to the passageway 14 for a predetermined period of time (e.g., three seconds) followed by a predetermined period of time (e.g., 60 seconds) in which fuel is not supplied to passageway 14 .
  • a predetermined period of time e.g., three seconds
  • a predetermined period of time e.g. 60 seconds
  • the system 10 may employ a sensor 38 and/or engine mapping to provide input(s) to the controller 32 for control of the fuel supplier 26 and/or the valve 30 .
  • the sensor 38 may be, for example, a lambda sensor coupled to the passageway 14 upstream from the fuel reformer 16 for sensing the air-to-fuel ratio of the flow in the passageway 14 .
  • the sensor 38 is electrically coupled to the controller 32 via an electrical line 40 to provide its sensor output to controller 32 .
  • the controller 32 may also have stored therein engine mapping information for control of the fuel supplier 26 and/or the valve 30 based on operational parameters associated with the engine 20 (e.g., engine rpm, temperature, throttle position).
  • the fuel reformer 16 is configured, for example, as a catalyst in the form of a catalyzed substrate.
  • the catalyst is, for example, a metallic catalyst.
  • the temperature of the catalyst is elevated to its activation temperature by the heat of the exhaust gas.
  • use of a catalyst obviates the need for an ignition source with its own power supply to ignite the combustible mixture in the passageway 14 .
  • the apparatus 10 is thus able to generate partial combustion product through the use of relatively “fine” control of the air-to-fuel ratio of the flow delivered to the fuel reformer 16 . Moreover, it does so by use of the oxygen and heat content of the exhaust gas so that there is no need for supplemental oxygen or an ignition source. It is within the scope of this disclosure, however, to include such supplemental oxygen and an ignition source.
  • a second apparatus 110 employing many of the components of the apparatus 10 for use in combustion enhancement of the engine 20 .
  • the “in situ” fuel reformer 16 of the parallel flow arrangement 22 is used to generate partial combustion product such as H 2 which is advanced to the engine 20 to enhance the combustion of fuel (e.g., gasoline) in the engine 20 .
  • the system 110 is otherwise similar in structure and function to the system 10 so that identical reference numbers refer to similar components.
  • the arrangement 222 has a housing 224 and an inner tube 226 mounted in the housing 224 .
  • the housing 224 has an inlet port 228 that receives exhaust gas from the exhaust gas supply passageway 24 and an outlet port 230 that discharges exhaust gas and partial combustion product to the downstream exhaust gas passageway 25 .
  • An annular outer exhaust gas passageway 214 corresponding to the first exhaust gas passageway 14 of the systems 10 , 110 is defined between the housing 224 and the inner tube 226 .
  • the passageway 214 contains the fuel reformer 16 which has an annular shape to fit in the passageway 214 around the inner tube 226 and an inner exhaust gas passageway 218 defined therein.
  • a fuel dispenser ring 231 is secured to the housing 224 to dispense fuel received from the fuel line 28 into the passageway 214 .
  • the inner tube 226 defines the inner exhaust gas passageway 218 which corresponds to the second exhaust gas passageway 18 of the systems 10 , 110 to conduct exhaust gas so as to bypass the fuel reformer 16 .
  • the passageways 214 , 218 are parallel and have a common axis 233 such that the passageways 214 , 218 are coaxial.
  • the optional valve 30 may be configured, for example, as a butterfly valve positioned in the inner exhaust gas passageway 218 .
  • FIG. 3 a there is shown another coaxial parallel flow arrangement 222 a for use as the parallel flow arrangement 22 in the systems 10 , 110 .
  • the arrangement 222 a is configured in a manner similar to the arrangement 222 except that the fuel reformer 16 is non-annular and is mounted in the inner tube 226 so as to be positioned in the passageway 218 rather than the passageway 214 .
  • a fuel dispenser 231 a receives fuel from the fuel line 28 and is mounted to dispense fuel supplied thereby into the passageway 218 .
  • the valve 30 may also be used with the arrangement 222 a to control flow of exhaust gas into the passageway 218 .
  • the coaxial feature of the passageways 214 , 218 of the arrangements 222 , 222 a provides a number of benefits.
  • the coaxial feature provides that each of the arrangements 222 , 222 a is relatively compact, which may be especially useful in environments where space economy is a factor (e.g., on board vehicles).
  • the coaxial feature promotes transfer of exhaust gas heat to the reformer 16 to facilitate operation of the reformer 16 .
  • heat of exhaust gas in the passageway 218 may be transferred to the surrounding reformer 16 and, in the arrangement 222 a, heat of exhaust gas in the passageway 214 may be transferred to the reformer 16 surrounded by the passageway 214 .
  • more heat may be transferred to the reformer 16 in the arrangement 222 a than in the arrangement 222 since, in the arrangement 222 a, the reformer 16 is spaced apart from the housing 224 which may be exposed to atmosphere.
  • Such heat transfer to the reformer 16 may be especially useful when the reformer 16 is a catalyst having an activation temperature at which the catalyst becomes operational. Production of the partial combustion product is thus enhanced.
  • the arrangement 322 has a first conduit 324 and a second conduit 326 .
  • the conduits 324 , 326 are secured to one another at upstream and downstream junctions and extend between such junctions outside of one another.
  • Exhaust gas is divided at the upstream junction to flow into a first exhaust gas passageway 314 corresponding to the passageway 14 of the systems 10 , 110 and a second exhaust gas passageway 318 corresponding to the passageway 18 of the systems 10 , 110 .
  • the passageways 314 , 318 are parallel but not co-axial.
  • a fuel dispenser 331 is secured to the first conduit 324 to dispense fuel from the fuel line 28 into the passageway 314 .
  • the reformer 16 is configured, for example, as a catalyst positioned in the first exhaust gas passageway 314 to partially combust the fuel with oxygen from the exhaust gas present in the passageway 314 into H 2 and/or CO.
  • the passageways 314 , 318 recombine at the downstream junction between the conduits 324 , 326 for delivery of the H 2 and/or CO to the downstream exhaust gas passageway 25 .
  • the optional valve 30 may be configured, for example, as a butterfly valve positioned in either passageway 314 , 318 to control flow of exhaust into passageways 314 , 318 .
  • the valve 30 is located in the passageway 318 .

Abstract

An apparatus comprises parallel and coaxial first and second exhaust gas passageways, a fuel reformer positioned in the first exhaust gas passageway to generate partial combustion product (e.g., H2 and/or CO), and a component such as an emission abatement device or an internal combustion engine positioned to receive the partial combustion product from the first exhaust gas passageway and exhaust gas from the second exhaust gas passageway. An associated method is disclosed.

Description

    FIELD OF THE DISCLOSURE
  • The present disclosure relates generally to exhaust systems and fuel reformers.
  • BACKGROUND OF THE DISCLOSURE
  • Fuel reformers may be used for a variety of purposes. In some cases, for example, fuel reformers are used in the process of regenerating emission abatement devices such as NOx traps and particulate traps. In other cases, fuel reformers are used to provide hydrogen (H2) to an internal combustion engine to enhance the fuel combustion process.
  • SUMMARY OF THE DISCLOSURE
  • According to a first aspect of the present disclosure, there is provided an apparatus having parallel and coaxial first and second exhaust gas passageways. A fuel reformer is positioned in the first exhaust gas passageway and configured to partially combust fuel supplied to the first exhaust gas passageway with oxygen from exhaust gas present in the first exhaust gas passageway to generate partial combustion product. Placement of the fuel reformer in the first exhaust gas passageway facilitates control of the air-to-fuel ratio of the flow delivered to the fuel reformer and thus facilitates generation of the partial combustion product.
  • A component is fluidly coupled to the first and second exhaust gas passageways to receive the partial combustion product from the first exhaust gas passageway and exhaust gas from the second exhaust gas passageway. The component may be, for example, an emission abatement device (e.g., a NOx trap, a particulate abatement device, a selective catalytic reduction device, or any combination thereof) or an internal combustion engine.
  • According to a second aspect of the disclosure, the fuel reformer is a catalyst. The catalyst is activated by the heat of the exhaust gas in the first exhaust gas passageway and catalyzes a chemical reaction to partially combust the fuel into hydrogen (H2) and carbon monoxide (CO) which are useful in the regeneration of NOx traps and particulate abatement devices and may also be useful with selective catalytic reduction devices. The hydrogen (H2) is also useful for enhancement of combustion of an internal engine.
  • The above and other features of the present disclosure will become apparent from the following description and the attached drawings.
  • BRIEF DESCRIPTION OF THE DRAWINGS
  • FIG. 1 is a simplified block diagram showing a first apparatus with an “in situ” fuel reformer positioned in an exhaust gas passageway to generate partial combustion product (e.g., H2 and CO) for use in conjunction with an emission abatement device;
  • FIG. 2 is a simplified block diagram showing a second apparatus with the “in situ” fuel reformer configured to generate partial combustion product provided to an internal combustion engine to enhance the combustion process in the engine;
  • FIG. 3 is a diagrammatic view showing a first coaxial parallel flow arrangement for use with the first and second apparatus;
  • FIG. 3 a is a diagrammatic view showing a second coaxial parallel flow arrangement for use with the first and second apparatus; and
  • FIG. 4 is a diagrammatic view showing a non-coaxial parallel flow arrangement for use with the first and second apparatus.
  • DETAILED DESCRIPTION OF THE DRAWINGS
  • While the concepts of the present disclosure are susceptible to various modifications and alternative forms, specific exemplary embodiments thereof have been shown by way of example in the drawings and will herein be described in detail. It should be understood, however, that there is no intent to limit the disclosure to the particular forms disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives following within the spirit and scope of the invention as defined by the appended claims.
  • Referring to FIG. 1, there is shown an apparatus 10 configured to generate partial combustion product such as hydrogen (H2) and/or carbon monoxide (CO) for use in conjunction with a downstream component such as an emission abatement device 12. It does so by diverting a portion of a stream of exhaust gas (“EG” in the drawings) to flow into a first exhaust gas passageway 14 containing an “in situ” fuel reformer 16 configured, for example, as a catalyst. The fuel reformer 16 partially combusts a hydrocarbon fuel (e.g., diesel fuel) supplied to the passageway 14 with oxygen from exhaust gas present in the passageway 14 to produce the partial combustion product for delivery to the emission abatement device 12. The remainder of the exhaust gas passes through an exhaust gas passageway 18 parallel to the passageway 14.
  • Such an arrangement facilitates control of the air-to-fuel ratio of the flow delivered to the fuel reformer 16 and thus facilitates generation of the partial combustion product. Further, since oxygen of the exhaust gas is used, it avoids the need for a supplemental source of oxygen. In addition, an ignition source is not needed because the heat of the exhaust gas is sufficient for the partial combustion reaction.
  • The system 10 includes an internal combustion engine 20 (e.g., a diesel engine), a parallel flow arrangement 22, and the emission abatement device 12. The engine 20 produces the exhaust gas which flows through an exhaust gas supply passageway 24. The parallel flow arrangement 22 then divides the exhaust gas stream to flow into the parallel passageways 14, 18. A portion of the exhaust gas flows into the passageway 14 containing the fuel reformer 16. The other portion of the exhaust gas flows into the passageway 18. The passageways 14, 18 recombine downstream from the fuel reformer 16 into a downstream exhaust gas passageway 25 which delivers the H2 and/or CO produced by the fuel reformer 16 and the exhaust gas from the passageway 18 to the emission abatement device 12.
  • The emission abatement device 12 may be, for example, a NOx trap, a selective catalytic reduction (SCR) device, or a particulate abatement device. A NOx trap is used to remove NOx from the exhaust gas. It does so by trapping NOx present in the exhaust gas under lean conditions (as is normally the case in diesel exhaust) and reducing the trapped NOx to nitrogen under rich conditions when the fuel reformer 16 is operated to produce the partial combustion product. The partial combustion product (e.g., H2, CO) is thus useful as a NOx-reducing agent. If the fuel reformer 16 is operated to produce the partial combustion product for a longer time, the partial combustion product can be used to desulphate the NOx trap 16.
  • An SCR device operates in conjunction with the partial combustion product to convert NOx into nitrogen without the need to first trap the NOx and then release and reduce the NOx. The SCR device is “selective” in the sense that it catalyzes a reaction between the partial combustion product (e.g., H2, CO) generated by the fuel reformer 16 and NOx present in the exhaust gas. The NOx is thereby removed from the exhaust gas.
  • A particulate abatement device is used to remove particulates from the exhaust gas. It may take the form of a particulate trap (catalyzed or uncatalyzed) alone or in combination with an upstream oxidation catalyst (e.g., diesel oxidation catalyst). The partial combustion product (e.g., H2, CO) may be oxidized in the presence of the catalyst of a catalyzed particulate trap or in the presence of an upstream oxidation catalyst to generate heat useful for burning off particulate matter trapped by the particulate trap so as to regenerate the particulate trap.
  • It is within the scope of this disclosure for the emission abatement device 12 to include any combination of a NOx trap, an SCR device, and a particulate abatement device. One such combination example is an SCR device and a particulate trap.
  • Fuel is supplied to the passageway 14 by a fuel supplier 26. A fuel line 28 of the fuel supplier 26 is coupled to the passageway 14 to supply fuel to passageway 14 upstream from the fuel reformer 16. The fuel may be, for example, diesel fuel in liquid form or as a vapor. The fuel supplier 26 is not coupled to the passageway 18.
  • The system 10 may be used with or without an exhaust gas valve 30 to control flow of the exhaust gas between passageways 14, 18. In the case in which the system 10 has the valve 30, the valve 30 may be located in either passageway 14, 18 or at the upstream junction of the two passageways 14, 18.
  • A controller 32 is electrically coupled to the fuel supplier 26 via an electrical line 34 and, when the valve 30 is included, it is electrically coupled to the valve 30 via an electrical line 36 to control operation of the fuel supplier 26 and the valve 30. The controller 32 is thus able to vary the injection rate of fuel into passageway 14 and/or vary admission of exhaust gas and thus oxygen into passageway 14. In so doing, the controller 32 is able to control the air-to-fuel ratio of the flow delivered to the fuel reformer 16 to facilitate generation of the partial combustion product by the fuel reformer 16. Exemplarily, in the case where the emission abatement device 12 is a NOx trap, the controller 32 may cycle operation of the fuel supplier 26 so as to provide fuel to the passageway 14 for a predetermined period of time (e.g., three seconds) followed by a predetermined period of time (e.g., 60 seconds) in which fuel is not supplied to passageway 14.
  • To further facilitate the control of the air-to-fuel ratio, the system 10 may employ a sensor 38 and/or engine mapping to provide input(s) to the controller 32 for control of the fuel supplier 26 and/or the valve 30. The sensor 38 may be, for example, a lambda sensor coupled to the passageway 14 upstream from the fuel reformer 16 for sensing the air-to-fuel ratio of the flow in the passageway 14. In such a case, the sensor 38 is electrically coupled to the controller 32 via an electrical line 40 to provide its sensor output to controller 32. The controller 32 may also have stored therein engine mapping information for control of the fuel supplier 26 and/or the valve 30 based on operational parameters associated with the engine 20 (e.g., engine rpm, temperature, throttle position).
  • The fuel reformer 16 is configured, for example, as a catalyst in the form of a catalyzed substrate. The catalyst is, for example, a metallic catalyst. In the case where the fuel reformer 16 is a catalyst, the temperature of the catalyst is elevated to its activation temperature by the heat of the exhaust gas. Moreover, use of a catalyst obviates the need for an ignition source with its own power supply to ignite the combustible mixture in the passageway 14.
  • The apparatus 10 is thus able to generate partial combustion product through the use of relatively “fine” control of the air-to-fuel ratio of the flow delivered to the fuel reformer 16. Moreover, it does so by use of the oxygen and heat content of the exhaust gas so that there is no need for supplemental oxygen or an ignition source. It is within the scope of this disclosure, however, to include such supplemental oxygen and an ignition source.
  • Referring to FIG. 2, there is shown a second apparatus 110 employing many of the components of the apparatus 10 for use in combustion enhancement of the engine 20. In particular, the “in situ” fuel reformer 16 of the parallel flow arrangement 22 is used to generate partial combustion product such as H2 which is advanced to the engine 20 to enhance the combustion of fuel (e.g., gasoline) in the engine 20. The system 110 is otherwise similar in structure and function to the system 10 so that identical reference numbers refer to similar components.
  • Referring to FIG. 3, there is shown a coaxial parallel flow arrangement 222 for use as the parallel flow arrangement 22 in the systems 10, 110. The arrangement 222 has a housing 224 and an inner tube 226 mounted in the housing 224. The housing 224 has an inlet port 228 that receives exhaust gas from the exhaust gas supply passageway 24 and an outlet port 230 that discharges exhaust gas and partial combustion product to the downstream exhaust gas passageway 25.
  • An annular outer exhaust gas passageway 214 corresponding to the first exhaust gas passageway 14 of the systems 10, 110 is defined between the housing 224 and the inner tube 226. The passageway 214 contains the fuel reformer 16 which has an annular shape to fit in the passageway 214 around the inner tube 226 and an inner exhaust gas passageway 218 defined therein. A fuel dispenser ring 231 is secured to the housing 224 to dispense fuel received from the fuel line 28 into the passageway 214.
  • The inner tube 226 defines the inner exhaust gas passageway 218 which corresponds to the second exhaust gas passageway 18 of the systems 10, 110 to conduct exhaust gas so as to bypass the fuel reformer 16. The passageways 214, 218 are parallel and have a common axis 233 such that the passageways 214, 218 are coaxial. The optional valve 30 may be configured, for example, as a butterfly valve positioned in the inner exhaust gas passageway 218.
  • Referring to FIG. 3 a, there is shown another coaxial parallel flow arrangement 222 a for use as the parallel flow arrangement 22 in the systems 10, 110. The arrangement 222 a is configured in a manner similar to the arrangement 222 except that the fuel reformer 16 is non-annular and is mounted in the inner tube 226 so as to be positioned in the passageway 218 rather than the passageway 214. A fuel dispenser 231 a receives fuel from the fuel line 28 and is mounted to dispense fuel supplied thereby into the passageway 218. The valve 30 may also be used with the arrangement 222 a to control flow of exhaust gas into the passageway 218.
  • Referring to both FIGS. 3 and 3 a, the coaxial feature of the passageways 214, 218 of the arrangements 222, 222 a provides a number of benefits. For example, the coaxial feature provides that each of the arrangements 222, 222 a is relatively compact, which may be especially useful in environments where space economy is a factor (e.g., on board vehicles).
  • In addition, the coaxial feature promotes transfer of exhaust gas heat to the reformer 16 to facilitate operation of the reformer 16. More specifically, in the arrangement 222, heat of exhaust gas in the passageway 218 may be transferred to the surrounding reformer 16 and, in the arrangement 222 a, heat of exhaust gas in the passageway 214 may be transferred to the reformer 16 surrounded by the passageway 214. Indeed, more heat may be transferred to the reformer 16 in the arrangement 222 a than in the arrangement 222 since, in the arrangement 222 a, the reformer 16 is spaced apart from the housing 224 which may be exposed to atmosphere. Such heat transfer to the reformer 16 may be especially useful when the reformer 16 is a catalyst having an activation temperature at which the catalyst becomes operational. Production of the partial combustion product is thus enhanced.
  • Referring to FIG. 4, there is shown a non-coaxial parallel flow arrangement 322 for use as the parallel flow arrangement 22 in the systems 10, 110. The arrangement 322 has a first conduit 324 and a second conduit 326. The conduits 324, 326 are secured to one another at upstream and downstream junctions and extend between such junctions outside of one another.
  • Exhaust gas is divided at the upstream junction to flow into a first exhaust gas passageway 314 corresponding to the passageway 14 of the systems 10, 110 and a second exhaust gas passageway 318 corresponding to the passageway 18 of the systems 10, 110. The passageways 314, 318 are parallel but not co-axial. A fuel dispenser 331 is secured to the first conduit 324 to dispense fuel from the fuel line 28 into the passageway 314. The reformer 16 is configured, for example, as a catalyst positioned in the first exhaust gas passageway 314 to partially combust the fuel with oxygen from the exhaust gas present in the passageway 314 into H2 and/or CO. The passageways 314, 318 recombine at the downstream junction between the conduits 324, 326 for delivery of the H2 and/or CO to the downstream exhaust gas passageway 25.
  • The optional valve 30 may be configured, for example, as a butterfly valve positioned in either passageway 314, 318 to control flow of exhaust into passageways 314, 318. Illustratively, the valve 30 is located in the passageway 318.
  • While the concepts of the present disclosure have been illustrated and described in detail in the drawings and foregoing description, such an illustration and description is to be considered as exemplary and not restrictive in character, it being understood that only the illustrative embodiments have been shown and described and that all changes and modifications that come within the spirit of the disclosure are desired to be protected.
  • There are a plurality of advantages of the concepts of the present disclosure arising from the various features of the systems described herein. It will be noted that alternative embodiments of each of the systems of the present disclosure may not include all of the features described yet still benefit from at least some of the advantages of such features. Those of ordinary skill in the art may readily devise their own implementations of a system that incorporate one or more of the features of the present disclosure and fall within the spirit and scope of the invention as defined by the appended claims.

Claims (20)

1. A method, comprising the steps of:
dividing a stream of exhaust gas to flow into parallel and coaxial first and second exhaust gas passageways upstream from a component,
introducing fuel into the first exhaust gas passageway,
partially combusting the fuel introduced into the first exhaust gas passageway with oxygen from the exhaust gas present in the first exhaust gas passageway so as to generate partial combustion product, and
advancing the partial combustion product to the component.
2. The method of claim 1, wherein the dividing step comprises advancing a first exhaust gas stream in the first exhaust gas passageway and a second exhaust gas stream in the second exhaust gas passageway such that the first exhaust gas stream either surrounds the second exhaust gas stream or is surrounded by the second exhaust gas stream.
3. The method of claim 1, wherein the dividing step comprises operating an exhaust gas valve to direct a portion of the exhaust gas stream into the first exhaust gas passageway and a portion of the exhaust gas stream into the second exhaust gas passageway.
4. The method of claim 1, wherein the combusting step comprises operating a fuel reformer positioned in the first exhaust gas passageway.
5. The method of claim 4, wherein:
the fuel reformer is a catalyst, and
the operating step comprises partially combusting the fuel into hydrogen (H2) and carbon monoxide (CO) with the catalyst.
6. The method of claim 4, wherein the operating step comprises the fuel reformer generating at least one of hydrogen (H2) and carbon monoxide (CO) by use of the oxygen and heat content of the exhaust gas present in the first exhaust gas passageway without the assistance of additional oxygen from a supplemental oxygen source and without the assistance of heat from an ignition source.
7. The method of claim 1, further comprising varying introduction of at least one of fuel and exhaust gas into the first exhaust gas passageway so as to control the air-to-fuel ratio of the flow supplied to the fuel reformer.
8. The method of claim 1, wherein:
the component comprises at least one of an emission abatement device and an internal combustion engine, and
the advancing step comprises advancing the partial combustion product from the first exhaust gas passageway to at least one of the emission abatement devices and the internal combustion engine.
9. An apparatus, comprising:
parallel and coaxial first and second exhaust gas passageways,
a fuel reformer positioned in the first exhaust gas passageway and configured to partially combust fuel supplied to the first exhaust gas passageway with oxygen from exhaust gas present in the first exhaust gas passageway to generate partial combustion product, and
a component fluidly coupled to the first and second exhaust gas passageways to receive the partial combustion product from the first exhaust gas passageway and exhaust gas from the second exhaust gas passageway.
10. The apparatus of claim 9, wherein the first exhaust gas passageway surrounds the second exhaust gas passageway.
11. The apparatus of claim 10, wherein:
the first exhaust gas passageway is annular, and
the fuel reformer is an annular catalyst positioned in the annular first exhaust gas passageway so as to surround the second exhaust gas passageway.
12. The apparatus of claim 9, wherein the second exhaust gas passageway surrounds the first exhaust gas passageway.
13. The apparatus of claim 9, wherein the first exhaust gas passageway or the second exhaust gas passageway is annular.
14. The apparatus of claim 9, wherein the fuel reformer is a catalyst configured to partially combust the fuel into at least one of hydrogen (H2) and carbon monoxide (CO).
15. The apparatus of claim 9, further comprising a fuel supplier that is fluidly coupled to the first exhaust gas passageway, but not fluidly coupled to the second exhaust gas passageway, to supply fuel to the fuel reformer.
16. The apparatus of claim 15, further comprising (i) an exhaust gas valve positioned to direct exhaust gas between the first and second exhaust gas passageways and (ii) a controller coupled to the fuel supplier and the valve to control operation thereof.
17. The apparatus of claim 9, wherein the component is a NOx trap.
18. The apparatus of claim 9, wherein the component is a particulate abatement device.
19. The apparatus of claim 9, wherein the component is a selective catalytic reduction device.
20. The apparatus of claim 9, wherein the component is an internal combustion engine.
US11/202,065 2005-08-11 2005-08-11 Apparatus with in situ fuel reformer and associated method Abandoned US20070033929A1 (en)

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070045044A1 (en) * 2005-08-26 2007-03-01 Sullivan John T Flow-through mufflers with optional thermo-electric, sound cancellation, and tuning capabilities
US20080295501A1 (en) * 2007-05-31 2008-12-04 Weidong Gong Stoichiometric engine system utilizing reformed exhaust gas
US20120017665A1 (en) * 2009-02-12 2012-01-26 Oliver Wolst Sensor element of a gas sensor and method for operating the same
WO2012063082A1 (en) * 2010-11-11 2012-05-18 Johnson Matthey Public Limited Company Fuel reformer
WO2012063081A1 (en) * 2010-11-11 2012-05-18 Johnson Matthey Public Limited Company Fuel reformer
EP2631006A3 (en) * 2012-02-22 2013-11-13 International Engine Intellectual Property Company, LLC Catalytic fuel vaporizer and fuel reformer assembly
CN104005816A (en) * 2013-02-22 2014-08-27 万国引擎知识产权有限责任公司 Catalytic fuel vaporizer and fuel reformer assembly
US9410476B2 (en) 2012-10-24 2016-08-09 Ge Jenbacher Gmbh & Co Og Internal combustion engine-reformer installation
US20170051685A1 (en) * 2009-09-04 2017-02-23 Lg Fuel Cell Systems Inc. Engine Systems and Methods of Operating an Engine

Citations (97)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2787730A (en) * 1951-01-18 1957-04-02 Berghaus Glow discharge apparatus
US3018409A (en) * 1953-12-09 1962-01-23 Berghaus Elektrophysik Anst Control of glow discharge processes
US3035205A (en) * 1950-08-03 1962-05-15 Berghaus Elektrophysik Anst Method and apparatus for controlling gas discharges
US3423562A (en) * 1965-06-24 1969-01-21 Gen Electric Glow discharge apparatus
US3594609A (en) * 1967-04-17 1971-07-20 Mini Ind Constructillor Plasma generator with magnetic focussing and with additional admission of gas
US3649195A (en) * 1969-05-29 1972-03-14 Phillips Petroleum Co Recovery of electrical energy in carbon black production
US3657892A (en) * 1970-06-29 1972-04-25 Universal Oil Prod Co Exhaust gas treatment system
US3755131A (en) * 1969-03-17 1973-08-28 Atlantic Richfield Co Apparatus for electrolytic purification of hydrogen
US3828736A (en) * 1971-01-22 1974-08-13 Siemens Ag Method and apparatus for operating combustion engines
US3879680A (en) * 1973-02-20 1975-04-22 Atlantic Res Corp Device for removing and decontaminating chemical laser gaseous effluent
US3894605A (en) * 1972-03-16 1975-07-15 Rolando Salvadorini Thermo-electrically propelled motor-vehicle
US4033133A (en) * 1976-03-22 1977-07-05 California Institute Of Technology Start up system for hydrogen generator used with an internal combustion engine
US4036181A (en) * 1972-07-13 1977-07-19 Thagard Technology Company High temperature fluid-wall reactors for transportation equipment
US4036131A (en) * 1975-09-05 1977-07-19 Harris Corporation Dampener
US4099489A (en) * 1975-10-06 1978-07-11 Bradley Curtis E Fuel regenerated non-polluting internal combustion engine
US4144444A (en) * 1975-03-20 1979-03-13 Dementiev Valentin V Method of heating gas and electric arc plasmochemical reactor realizing same
US4339564A (en) * 1979-09-29 1982-07-13 Shin-Etsu Chemical Co., Ltd. Heat curable organopolysiloxane compositions
US4372111A (en) * 1980-03-03 1983-02-08 Texaco Inc. Method for cyclic rejuvenation of an exhaust gas filter and apparatus
US4373330A (en) * 1981-06-29 1983-02-15 General Motors Corporation Diesel engine dual path exhaust cleaner and burner system
US4436793A (en) * 1982-09-29 1984-03-13 Engelhard Corporation Control system for hydrogen generators
US4451441A (en) * 1981-01-27 1984-05-29 W. R. Grace & Co. Method for exhaust gas treatment
US4458634A (en) * 1983-02-11 1984-07-10 Carr Edwin R Internal combustion engine with hydrogen producing device having water and oil interface level control
US4515758A (en) * 1982-09-03 1985-05-07 Degussa Aktiengesellschaft Process and catalyst for the reduction of the ignition temperature of diesel soot filtered out of the exhaust gas of diesel engines
US4516990A (en) * 1983-07-14 1985-05-14 Filterwerk Mann & Hummel Gmbh Method of removing soot from exhaust gases
US4522894A (en) * 1982-09-30 1985-06-11 Engelhard Corporation Fuel cell electric power production
US4535588A (en) * 1979-06-12 1985-08-20 Nippon Soken, Inc. Carbon particulates cleaning device for diesel engine
US4576617A (en) * 1983-06-16 1986-03-18 Regie Nationale Des Usines Renault Apparatus comprising the combination of filter apparatus and regeneration apparatus and process for regenerating the filter apparatus using the regeneration apparatus
US4578955A (en) * 1984-12-05 1986-04-01 Ralph Medina Automotive power plant
US4645521A (en) * 1985-04-18 1987-02-24 Freesh Charles W Particulate trap
US4651524A (en) * 1984-12-24 1987-03-24 Arvin Industries, Inc. Exhaust processor
US4657829A (en) * 1982-12-27 1987-04-14 United Technologies Corporation Fuel cell power supply with oxidant and fuel gas switching
US4670233A (en) * 1984-10-04 1987-06-02 Filterwerk Mann & Hummel Gmbh Method of removing soot which has been trapped in an exhaust gas filter of an internal combustion engine
US4720376A (en) * 1985-05-07 1988-01-19 Didier Engineering Gmbh Process for the removal of nitrogen oxides and soot from exhaust gases of machines and combustion installations burning heavy fuel oil
US4720972A (en) * 1986-10-17 1988-01-26 Ford Motor Company Low energy regeneration system for particulate trap for an internal combustion engine
US4759918A (en) * 1987-04-16 1988-07-26 Allied-Signal Inc. Process for the reduction of the ignition temperature of diesel soot
US4828807A (en) * 1984-02-28 1989-05-09 Rainer Domesle Method for the purification of exhaust gas from diesel motors
US4830492A (en) * 1986-02-24 1989-05-16 Gesellschaft zur Forderung der Spektrochemie und angewandten Spektrochemie e.V. Glow-discharge lamp and its application
US4841925A (en) * 1986-12-22 1989-06-27 Combustion Electromagnetics, Inc. Enhanced flame ignition for hydrocarbon fuels
US4848083A (en) * 1987-05-21 1989-07-18 Webasto Ag Fahrzeugtechnik Exhaust gas unit for multicylinder diesel internal combustion engines
US4849274A (en) * 1987-06-19 1989-07-18 W. R. Grace & Co.-Conn. Honeycomb fluid conduit
US4902487A (en) * 1988-05-13 1990-02-20 Johnson Matthey, Inc. Treatment of diesel exhaust gases
US4928227A (en) * 1987-11-02 1990-05-22 Ford Motor Company Method for controlling a motor vehicle powertrain
US5095247A (en) * 1989-08-30 1992-03-10 Shimadzu Corporation Plasma discharge apparatus with temperature sensing
US5138959A (en) * 1988-09-15 1992-08-18 Prabhakar Kulkarni Method for treatment of hazardous waste in absence of oxygen
US5205912A (en) * 1989-12-27 1993-04-27 Exxon Research & Engineering Company Conversion of methane using pulsed microwave radiation
US5207185A (en) * 1992-03-27 1993-05-04 Leonard Greiner Emissions reduction system for internal combustion engines
US5212431A (en) * 1990-05-23 1993-05-18 Nissan Motor Co., Ltd. Electric vehicle
US5228529A (en) * 1991-12-17 1993-07-20 Stuart Rosner Method for renewing fuel cells using magnesium anodes
US5284503A (en) * 1992-11-10 1994-02-08 Exide Corporation Process for remediation of lead-contaminated soil and waste battery
US5293743A (en) * 1992-05-21 1994-03-15 Arvin Industries, Inc. Low thermal capacitance exhaust processor
US5317996A (en) * 1991-07-17 1994-06-07 Lansing Joseph S Self-starting multifuel rotary piston engine
US5396764A (en) * 1994-02-14 1995-03-14 Ford Motor Company Spark ignition engine exhaust system
US5409784A (en) * 1993-07-09 1995-04-25 Massachusetts Institute Of Technology Plasmatron-fuel cell system for generating electricity
US5409785A (en) * 1991-12-25 1995-04-25 Kabushikikaisha Equos Research Fuel cell and electrolyte membrane therefor
US5412946A (en) * 1991-10-16 1995-05-09 Toyota Jidosha Kabushiki Kaisha NOx decreasing apparatus for an internal combustion engine
US5425332A (en) * 1993-08-20 1995-06-20 Massachusetts Institute Of Technology Plasmatron-internal combustion engine system
US5437250A (en) * 1993-08-20 1995-08-01 Massachusetts Institute Of Technology Plasmatron-internal combustion engine system
US5441401A (en) * 1991-09-13 1995-08-15 Aisin Seiki Kabushiki Kaisha Method of decreasing nitrogen oxides in combustion device which performs continuous combustion, and apparatus therefor
US5445841A (en) * 1992-06-19 1995-08-29 Food Sciences, Inc. Method for the extraction of oils from grain materials and grain-based food products
US5599758A (en) * 1994-12-23 1997-02-04 Goal Line Environmental Technologies Regeneration of catalyst/absorber
US5657625A (en) * 1994-06-17 1997-08-19 Mitsubishi Jidosha Kogyo Kabushiki Kaisha Apparatus and method for internal combustion engine control
US5660602A (en) * 1994-05-04 1997-08-26 University Of Central Florida Hydrogen enriched natural gas as a clean motor fuel
US5746989A (en) * 1995-08-14 1998-05-05 Toyota Jidosha Kabushiki Kaisha Method for purifying exhaust gas of a diesel engine
US5787706A (en) * 1993-12-30 1998-08-04 Ab Volvo Exhaust gas purification device
US5787864A (en) * 1995-04-25 1998-08-04 University Of Central Florida Hydrogen enriched natural gas as a motor fuel with variable air fuel ratio and fuel mixture ratio control
US5863413A (en) * 1996-06-28 1999-01-26 Litex, Inc. Method for using hydroxyl radical to reduce pollutants in the exhaust gases from the combustion of a fuel
US5887554A (en) * 1996-01-19 1999-03-30 Cohn; Daniel R. Rapid response plasma fuel converter systems
US5894725A (en) * 1997-03-27 1999-04-20 Ford Global Technologies, Inc. Method and apparatus for maintaining catalyst efficiency of a NOx trap
US5910097A (en) * 1996-07-17 1999-06-08 Daimler-Benz Aktiengesellschaft Internal combustion engine exhaust emission control system with adsorbers for nitrogen oxides
US5921076A (en) * 1996-01-09 1999-07-13 Daimler-Benz Ag Process and apparatus for reducing nitrogen oxides in engine emissions
US6012326A (en) * 1996-08-10 2000-01-11 Aea Technology Plc Detection of volatile substances
US6012284A (en) * 1997-05-21 2000-01-11 Denso Corporation Engine exhaust gas purifying system
US6014593A (en) * 1996-11-19 2000-01-11 Viking Sewing Machines Ab Memory reading module having a transparent front with a keypad
US6038854A (en) * 1996-08-19 2000-03-21 The Regents Of The University Of California Plasma regenerated particulate trap and NOx reduction system
US6038853A (en) * 1996-08-19 2000-03-21 The Regents Of The University Of California Plasma-assisted catalytic storage reduction system
US6047543A (en) * 1996-12-18 2000-04-11 Litex, Inc. Method and apparatus for enhancing the rate and efficiency of gas phase reactions
US6082102A (en) * 1997-09-30 2000-07-04 Siemens Aktiengesellschaft NOx reduction system with a device for metering reducing agents
US6170259B1 (en) * 1997-10-29 2001-01-09 Daimlerchrysler Ag Emission control system for an internal-combustion engine
US6176078B1 (en) * 1998-11-13 2001-01-23 Engelhard Corporation Plasma fuel processing for NOx control of lean burn engines
US6182445B1 (en) * 1999-02-08 2001-02-06 Honda Giken Kogyo Kabushiki Kaisha Exhaust switch-over valve malfunction detection system of internal combustion engine
US6193942B1 (en) * 1994-09-14 2001-02-27 Ict Co., Ltd Catalyst for decomposition of nitrogen oxides and method for purifying diesel engine exhaust gas by the use of the catalyst
US6199372B1 (en) * 1996-04-26 2001-03-13 Komatsu Ltd. Apparatus and method for regenerating NOx catalyst for diesel engine
US6235254B1 (en) * 1997-07-01 2001-05-22 Lynntech, Inc. Hybrid catalyst heating system with water removal for enhanced emissions control
US6248684B1 (en) * 1992-11-19 2001-06-19 Englehard Corporation Zeolite-containing oxidation catalyst and method of use
US6334306B1 (en) * 1998-05-29 2002-01-01 Nissan Motor Co., Ltd. Exhaust gas purification apparatus in combustion engine
US20020012618A1 (en) * 1998-10-29 2002-01-31 Leslie Bromberg Plasmatron-catalyst system
US6397586B1 (en) * 1998-12-22 2002-06-04 Toyota Jidosha Kabushiki Kaisha Emission control apparatus and method of internal combustion engine
US6422006B2 (en) * 2000-06-27 2002-07-23 Honda Giken Kogyo Kabushiki Kaisha Exhaust gas purifying apparatus for internal combustion engine
US6560958B1 (en) * 1998-10-29 2003-05-13 Massachusetts Institute Of Technology Emission abatement system
US6708486B2 (en) * 2001-10-04 2004-03-23 Toyota Jidosha Kabushiki Kaisha Exhaust gas purification device of internal combustion engine
US20040067177A1 (en) * 2002-09-03 2004-04-08 Thieman Graham F. Emission abatement device and method of using same
US6745560B2 (en) * 2002-07-11 2004-06-08 Fleetguard, Inc. Adsorber aftertreatment system having dual soot filters
US6845610B2 (en) * 2000-11-30 2005-01-25 Nissan Motor Co., Ltd. Exhaust gas purification apparatus and method
US6871489B2 (en) * 2003-04-16 2005-03-29 Arvin Technologies, Inc. Thermal management of exhaust systems
US6895746B2 (en) * 2002-05-31 2005-05-24 Utc Fuel Cells, Llc Reducing oxides of nitrogen using hydrogen generated from engine fuel and exhaust
US20050132696A1 (en) * 2003-12-23 2005-06-23 Prasad Tumati Method and apparatus for regenerating a nitrogen oxides absorber
US20060010859A1 (en) * 2004-07-14 2006-01-19 Eaton Corporation Valveless dual leg exhaust aftertreatment system

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2410644A1 (en) * 1974-03-06 1975-09-18 Reinhold Dipl Ing Schmidt ARRANGEMENTS ON COMBUSTION MACHINES AND / OR FIRING SYSTEMS AT METHANOL OPERATION
DE2439144C3 (en) * 1974-08-14 1979-04-05 Siemens Ag, 1000 Berlin Und 8000 Muenchen Device for distributing flowing media from a flow cross-section to a different flow cross-section

Patent Citations (99)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3035205A (en) * 1950-08-03 1962-05-15 Berghaus Elektrophysik Anst Method and apparatus for controlling gas discharges
US2787730A (en) * 1951-01-18 1957-04-02 Berghaus Glow discharge apparatus
US3018409A (en) * 1953-12-09 1962-01-23 Berghaus Elektrophysik Anst Control of glow discharge processes
US3423562A (en) * 1965-06-24 1969-01-21 Gen Electric Glow discharge apparatus
US3594609A (en) * 1967-04-17 1971-07-20 Mini Ind Constructillor Plasma generator with magnetic focussing and with additional admission of gas
US3755131A (en) * 1969-03-17 1973-08-28 Atlantic Richfield Co Apparatus for electrolytic purification of hydrogen
US3649195A (en) * 1969-05-29 1972-03-14 Phillips Petroleum Co Recovery of electrical energy in carbon black production
US3657892A (en) * 1970-06-29 1972-04-25 Universal Oil Prod Co Exhaust gas treatment system
US3828736A (en) * 1971-01-22 1974-08-13 Siemens Ag Method and apparatus for operating combustion engines
US3894605A (en) * 1972-03-16 1975-07-15 Rolando Salvadorini Thermo-electrically propelled motor-vehicle
US4036181A (en) * 1972-07-13 1977-07-19 Thagard Technology Company High temperature fluid-wall reactors for transportation equipment
US3879680A (en) * 1973-02-20 1975-04-22 Atlantic Res Corp Device for removing and decontaminating chemical laser gaseous effluent
US4144444A (en) * 1975-03-20 1979-03-13 Dementiev Valentin V Method of heating gas and electric arc plasmochemical reactor realizing same
US4036131A (en) * 1975-09-05 1977-07-19 Harris Corporation Dampener
US4099489A (en) * 1975-10-06 1978-07-11 Bradley Curtis E Fuel regenerated non-polluting internal combustion engine
US4033133A (en) * 1976-03-22 1977-07-05 California Institute Of Technology Start up system for hydrogen generator used with an internal combustion engine
US4535588A (en) * 1979-06-12 1985-08-20 Nippon Soken, Inc. Carbon particulates cleaning device for diesel engine
US4339564A (en) * 1979-09-29 1982-07-13 Shin-Etsu Chemical Co., Ltd. Heat curable organopolysiloxane compositions
US4372111A (en) * 1980-03-03 1983-02-08 Texaco Inc. Method for cyclic rejuvenation of an exhaust gas filter and apparatus
US4451441A (en) * 1981-01-27 1984-05-29 W. R. Grace & Co. Method for exhaust gas treatment
US4373330A (en) * 1981-06-29 1983-02-15 General Motors Corporation Diesel engine dual path exhaust cleaner and burner system
US4515758A (en) * 1982-09-03 1985-05-07 Degussa Aktiengesellschaft Process and catalyst for the reduction of the ignition temperature of diesel soot filtered out of the exhaust gas of diesel engines
US4436793A (en) * 1982-09-29 1984-03-13 Engelhard Corporation Control system for hydrogen generators
US4522894A (en) * 1982-09-30 1985-06-11 Engelhard Corporation Fuel cell electric power production
US4657829A (en) * 1982-12-27 1987-04-14 United Technologies Corporation Fuel cell power supply with oxidant and fuel gas switching
US4458634A (en) * 1983-02-11 1984-07-10 Carr Edwin R Internal combustion engine with hydrogen producing device having water and oil interface level control
US4576617A (en) * 1983-06-16 1986-03-18 Regie Nationale Des Usines Renault Apparatus comprising the combination of filter apparatus and regeneration apparatus and process for regenerating the filter apparatus using the regeneration apparatus
US4516990A (en) * 1983-07-14 1985-05-14 Filterwerk Mann & Hummel Gmbh Method of removing soot from exhaust gases
US4828807A (en) * 1984-02-28 1989-05-09 Rainer Domesle Method for the purification of exhaust gas from diesel motors
US4670233A (en) * 1984-10-04 1987-06-02 Filterwerk Mann & Hummel Gmbh Method of removing soot which has been trapped in an exhaust gas filter of an internal combustion engine
US4578955A (en) * 1984-12-05 1986-04-01 Ralph Medina Automotive power plant
US4651524A (en) * 1984-12-24 1987-03-24 Arvin Industries, Inc. Exhaust processor
US4645521A (en) * 1985-04-18 1987-02-24 Freesh Charles W Particulate trap
US4720376A (en) * 1985-05-07 1988-01-19 Didier Engineering Gmbh Process for the removal of nitrogen oxides and soot from exhaust gases of machines and combustion installations burning heavy fuel oil
US4830492A (en) * 1986-02-24 1989-05-16 Gesellschaft zur Forderung der Spektrochemie und angewandten Spektrochemie e.V. Glow-discharge lamp and its application
US4720972A (en) * 1986-10-17 1988-01-26 Ford Motor Company Low energy regeneration system for particulate trap for an internal combustion engine
US4841925A (en) * 1986-12-22 1989-06-27 Combustion Electromagnetics, Inc. Enhanced flame ignition for hydrocarbon fuels
US4759918A (en) * 1987-04-16 1988-07-26 Allied-Signal Inc. Process for the reduction of the ignition temperature of diesel soot
US4848083A (en) * 1987-05-21 1989-07-18 Webasto Ag Fahrzeugtechnik Exhaust gas unit for multicylinder diesel internal combustion engines
US4849274A (en) * 1987-06-19 1989-07-18 W. R. Grace & Co.-Conn. Honeycomb fluid conduit
US4928227A (en) * 1987-11-02 1990-05-22 Ford Motor Company Method for controlling a motor vehicle powertrain
US4902487A (en) * 1988-05-13 1990-02-20 Johnson Matthey, Inc. Treatment of diesel exhaust gases
US5138959A (en) * 1988-09-15 1992-08-18 Prabhakar Kulkarni Method for treatment of hazardous waste in absence of oxygen
US5095247A (en) * 1989-08-30 1992-03-10 Shimadzu Corporation Plasma discharge apparatus with temperature sensing
US5205912A (en) * 1989-12-27 1993-04-27 Exxon Research & Engineering Company Conversion of methane using pulsed microwave radiation
US5212431A (en) * 1990-05-23 1993-05-18 Nissan Motor Co., Ltd. Electric vehicle
US5317996A (en) * 1991-07-17 1994-06-07 Lansing Joseph S Self-starting multifuel rotary piston engine
US5441401A (en) * 1991-09-13 1995-08-15 Aisin Seiki Kabushiki Kaisha Method of decreasing nitrogen oxides in combustion device which performs continuous combustion, and apparatus therefor
US5412946A (en) * 1991-10-16 1995-05-09 Toyota Jidosha Kabushiki Kaisha NOx decreasing apparatus for an internal combustion engine
US5228529A (en) * 1991-12-17 1993-07-20 Stuart Rosner Method for renewing fuel cells using magnesium anodes
US5409785A (en) * 1991-12-25 1995-04-25 Kabushikikaisha Equos Research Fuel cell and electrolyte membrane therefor
US5207185A (en) * 1992-03-27 1993-05-04 Leonard Greiner Emissions reduction system for internal combustion engines
US5293743A (en) * 1992-05-21 1994-03-15 Arvin Industries, Inc. Low thermal capacitance exhaust processor
US5445841A (en) * 1992-06-19 1995-08-29 Food Sciences, Inc. Method for the extraction of oils from grain materials and grain-based food products
US5284503A (en) * 1992-11-10 1994-02-08 Exide Corporation Process for remediation of lead-contaminated soil and waste battery
US6248684B1 (en) * 1992-11-19 2001-06-19 Englehard Corporation Zeolite-containing oxidation catalyst and method of use
US5409784A (en) * 1993-07-09 1995-04-25 Massachusetts Institute Of Technology Plasmatron-fuel cell system for generating electricity
US5437250A (en) * 1993-08-20 1995-08-01 Massachusetts Institute Of Technology Plasmatron-internal combustion engine system
US5425332A (en) * 1993-08-20 1995-06-20 Massachusetts Institute Of Technology Plasmatron-internal combustion engine system
US5787706A (en) * 1993-12-30 1998-08-04 Ab Volvo Exhaust gas purification device
US5396764A (en) * 1994-02-14 1995-03-14 Ford Motor Company Spark ignition engine exhaust system
US5660602A (en) * 1994-05-04 1997-08-26 University Of Central Florida Hydrogen enriched natural gas as a clean motor fuel
US5657625A (en) * 1994-06-17 1997-08-19 Mitsubishi Jidosha Kogyo Kabushiki Kaisha Apparatus and method for internal combustion engine control
US6193942B1 (en) * 1994-09-14 2001-02-27 Ict Co., Ltd Catalyst for decomposition of nitrogen oxides and method for purifying diesel engine exhaust gas by the use of the catalyst
US5599758A (en) * 1994-12-23 1997-02-04 Goal Line Environmental Technologies Regeneration of catalyst/absorber
US5787864A (en) * 1995-04-25 1998-08-04 University Of Central Florida Hydrogen enriched natural gas as a motor fuel with variable air fuel ratio and fuel mixture ratio control
US5746989A (en) * 1995-08-14 1998-05-05 Toyota Jidosha Kabushiki Kaisha Method for purifying exhaust gas of a diesel engine
US5921076A (en) * 1996-01-09 1999-07-13 Daimler-Benz Ag Process and apparatus for reducing nitrogen oxides in engine emissions
US5887554A (en) * 1996-01-19 1999-03-30 Cohn; Daniel R. Rapid response plasma fuel converter systems
US6199372B1 (en) * 1996-04-26 2001-03-13 Komatsu Ltd. Apparatus and method for regenerating NOx catalyst for diesel engine
US5863413A (en) * 1996-06-28 1999-01-26 Litex, Inc. Method for using hydroxyl radical to reduce pollutants in the exhaust gases from the combustion of a fuel
US6048500A (en) * 1996-06-28 2000-04-11 Litex, Inc. Method and apparatus for using hydroxyl to reduce pollutants in the exhaust gases from the combustion of a fuel
US5910097A (en) * 1996-07-17 1999-06-08 Daimler-Benz Aktiengesellschaft Internal combustion engine exhaust emission control system with adsorbers for nitrogen oxides
US6012326A (en) * 1996-08-10 2000-01-11 Aea Technology Plc Detection of volatile substances
US6038854A (en) * 1996-08-19 2000-03-21 The Regents Of The University Of California Plasma regenerated particulate trap and NOx reduction system
US6038853A (en) * 1996-08-19 2000-03-21 The Regents Of The University Of California Plasma-assisted catalytic storage reduction system
US6014593A (en) * 1996-11-19 2000-01-11 Viking Sewing Machines Ab Memory reading module having a transparent front with a keypad
US6047543A (en) * 1996-12-18 2000-04-11 Litex, Inc. Method and apparatus for enhancing the rate and efficiency of gas phase reactions
US5894725A (en) * 1997-03-27 1999-04-20 Ford Global Technologies, Inc. Method and apparatus for maintaining catalyst efficiency of a NOx trap
US6012284A (en) * 1997-05-21 2000-01-11 Denso Corporation Engine exhaust gas purifying system
US6235254B1 (en) * 1997-07-01 2001-05-22 Lynntech, Inc. Hybrid catalyst heating system with water removal for enhanced emissions control
US6082102A (en) * 1997-09-30 2000-07-04 Siemens Aktiengesellschaft NOx reduction system with a device for metering reducing agents
US6170259B1 (en) * 1997-10-29 2001-01-09 Daimlerchrysler Ag Emission control system for an internal-combustion engine
US6334306B1 (en) * 1998-05-29 2002-01-01 Nissan Motor Co., Ltd. Exhaust gas purification apparatus in combustion engine
US6560958B1 (en) * 1998-10-29 2003-05-13 Massachusetts Institute Of Technology Emission abatement system
US20020012618A1 (en) * 1998-10-29 2002-01-31 Leslie Bromberg Plasmatron-catalyst system
US6176078B1 (en) * 1998-11-13 2001-01-23 Engelhard Corporation Plasma fuel processing for NOx control of lean burn engines
US6363716B1 (en) * 1998-11-13 2002-04-02 Engelhard Corporation Plasma fuel processing for NOx control lean burn engines
US6397586B1 (en) * 1998-12-22 2002-06-04 Toyota Jidosha Kabushiki Kaisha Emission control apparatus and method of internal combustion engine
US6182445B1 (en) * 1999-02-08 2001-02-06 Honda Giken Kogyo Kabushiki Kaisha Exhaust switch-over valve malfunction detection system of internal combustion engine
US6422006B2 (en) * 2000-06-27 2002-07-23 Honda Giken Kogyo Kabushiki Kaisha Exhaust gas purifying apparatus for internal combustion engine
US6845610B2 (en) * 2000-11-30 2005-01-25 Nissan Motor Co., Ltd. Exhaust gas purification apparatus and method
US6708486B2 (en) * 2001-10-04 2004-03-23 Toyota Jidosha Kabushiki Kaisha Exhaust gas purification device of internal combustion engine
US6895746B2 (en) * 2002-05-31 2005-05-24 Utc Fuel Cells, Llc Reducing oxides of nitrogen using hydrogen generated from engine fuel and exhaust
US6745560B2 (en) * 2002-07-11 2004-06-08 Fleetguard, Inc. Adsorber aftertreatment system having dual soot filters
US20040067177A1 (en) * 2002-09-03 2004-04-08 Thieman Graham F. Emission abatement device and method of using same
US6871489B2 (en) * 2003-04-16 2005-03-29 Arvin Technologies, Inc. Thermal management of exhaust systems
US20050132696A1 (en) * 2003-12-23 2005-06-23 Prasad Tumati Method and apparatus for regenerating a nitrogen oxides absorber
US20060010859A1 (en) * 2004-07-14 2006-01-19 Eaton Corporation Valveless dual leg exhaust aftertreatment system

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7610993B2 (en) * 2005-08-26 2009-11-03 John Timothy Sullivan Flow-through mufflers with optional thermo-electric, sound cancellation, and tuning capabilities
US20070045044A1 (en) * 2005-08-26 2007-03-01 Sullivan John T Flow-through mufflers with optional thermo-electric, sound cancellation, and tuning capabilities
US20080295501A1 (en) * 2007-05-31 2008-12-04 Weidong Gong Stoichiometric engine system utilizing reformed exhaust gas
US8833141B2 (en) * 2009-02-12 2014-09-16 Robert Bosch Gmbh Sensor element of a gas sensor and method for operating the same
US20120017665A1 (en) * 2009-02-12 2012-01-26 Oliver Wolst Sensor element of a gas sensor and method for operating the same
US9874158B2 (en) * 2009-09-04 2018-01-23 Lg Fuel Cell Systems, Inc Engine systems and methods of operating an engine
US20170051685A1 (en) * 2009-09-04 2017-02-23 Lg Fuel Cell Systems Inc. Engine Systems and Methods of Operating an Engine
CN103201474A (en) * 2010-11-11 2013-07-10 庄信万丰股份有限公司 Fuel reformer
US8567180B2 (en) 2010-11-11 2013-10-29 Johnson Matthey Public Limited Company Reformer unit
CN103210193A (en) * 2010-11-11 2013-07-17 庄信万丰股份有限公司 Fuel reformer
WO2012063081A1 (en) * 2010-11-11 2012-05-18 Johnson Matthey Public Limited Company Fuel reformer
WO2012063082A1 (en) * 2010-11-11 2012-05-18 Johnson Matthey Public Limited Company Fuel reformer
EP2631006A3 (en) * 2012-02-22 2013-11-13 International Engine Intellectual Property Company, LLC Catalytic fuel vaporizer and fuel reformer assembly
US9410476B2 (en) 2012-10-24 2016-08-09 Ge Jenbacher Gmbh & Co Og Internal combustion engine-reformer installation
CN104005816A (en) * 2013-02-22 2014-08-27 万国引擎知识产权有限责任公司 Catalytic fuel vaporizer and fuel reformer assembly

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