CA2581933A1 - Hydraulic hybrid drive system - Google Patents

Hydraulic hybrid drive system Download PDF

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Publication number
CA2581933A1
CA2581933A1 CA002581933A CA2581933A CA2581933A1 CA 2581933 A1 CA2581933 A1 CA 2581933A1 CA 002581933 A CA002581933 A CA 002581933A CA 2581933 A CA2581933 A CA 2581933A CA 2581933 A1 CA2581933 A1 CA 2581933A1
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CA
Canada
Prior art keywords
hydraulic
drive system
hybrid
prime mover
fluid
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002581933A
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French (fr)
Other versions
CA2581933C (en
Inventor
Kenric B. Rose
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Bosch Rexroth Corp
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Individual
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Publication date
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Publication of CA2581933A1 publication Critical patent/CA2581933A1/en
Application granted granted Critical
Publication of CA2581933C publication Critical patent/CA2581933C/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/08—Prime-movers comprising combustion engines and mechanical or fluid energy storing means
    • B60K6/12—Prime-movers comprising combustion engines and mechanical or fluid energy storing means by means of a chargeable fluidic accumulator
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
    • B60K6/26—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the motors or the generators
    • B60K2006/268—Electric drive motor starts the engine, i.e. used as starter motor
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/62—Hybrid vehicles

Abstract

A hybrid hydraulic drive system for a vehicle comprises a prime mover, a transmission connecting the prime mover to drive wheels, a fluid energy storage accumulator, and a reversible hydraulic machine in fluid communication with the energy storage accumulator and drivingly coupled to the prime mover upstream of the transmission. The hybrid hydraulic drive system is arranged such that in a retarding mode the reversible hydraulic machine retards the drive wheels of the vehicle by pumping fluid into the accumulator. In a driving mode the reversible hydraulic machine supplies a supplementary power to the drive wheels of the vehicle using the pressurized fluid from the accumulator to assist propulsion of the vehicle. In a neutral mode the reversible hydraulic machine is disconnected from the prime mover to render the reversible hydraulic machine substantially inoperative to exert any significant driving or retarding influence on the drive wheels.

Claims (18)

1. A hybrid hydraulic drive system for a motor vehicle, said system operable in three modes of operation including a driving mode, a retarding mode and a neutral mode, said system comprising:

a prime mover and a transmission connecting said prime mover to drive wheels;
at least one fluid energy storage accumulator operable to store and release a pressurized fluid;

a reversible hydraulic machine operatively coupled to an output shaft of said prime mover upstream of the transmission, said reversible hydraulic machine being in fluid communication with said at least one energy storage accumulator; and said hybrid hydraulic drive system being arranged such that in said retarding mode said reversible hydraulic machine retards the drive wheels of the vehicle by pumping fluid into said at least one energy storage accumulator, in said driving mode said reversible hydraulic machine supplies a supplementary power to the drive wheels of the vehicle using said pressurized fluid from said at least one energy storage accumulator to assist propulsion of said vehicle, and in said neutral mode said reversible hydraulic machine is disconnected from said prime mover to render said reversible hydraulic machine substantially inoperative to exert any significant driving or retarding influence on said drive wheels;

said hybrid hydraulic drive system thereby in use being adapted to supply said supplementary regenerative power and retardation to said drive wheels substantially independently of said prime mover.
2. The hybrid hydraulic drive system as defined in claim 1, further comprising a coupling device for coupling said reversible hydraulic machine to said prime mover.
3. The hybrid hydraulic drive system as defined in claim 1, wherein said coupling device includes a clutch assembly provided for selectively coupling said reversible hydraulic machine to said prime mover.
4. The hybrid hydraulic drive system as defined in claim 1, wherein in said neutral mode said clutch assembly of said coupling device disconnects said reversible hydraulic machine from said prime mover.
5. The hybrid hydraulic drive system as defined in claim 3, wherein said clutch assembly is a friction clutch assembly.
6. The hybrid hydraulic drive system as defined in claim 1, further comprising a hydraulic fluid reservoir provided for storing an appropriate amount of hydraulic fluid, said hydraulic fluid reservoir is in fluid communication with an inlet of said reversible hydraulic machine.
7. The hybrid hydraulic drive system as defined in claim 1, wherein said at least one fluid energy storage accumulator is a hydro-pneumatic accumulator.
8. The hybrid hydraulic drive system as defined in claim 1, wherein said at least one fluid energy storage accumulator includes a plurality of fluid energy storage accumulators.
9. The hybrid hydraulic drive system as defined in claim 1, wherein said reversible hydraulic machine is operatively coupled to said output shaft of said prime mover at a rear end thereof.
10. The hybrid hydraulic drive system as defined in claim 1, wherein said reversible hydraulic machine is operatively coupled to said output shaft of said prime mover at a front end thereof.
11. The hybrid hydraulic drive system as defined in claim 1, further comprising a torque converter disposed between said prime mover and said transmission, said torque converter includes a turbine drivingly connected to said output shaft of said prime mover, wherein said reversible hydraulic machine is operatively coupled to said turbine of said torque converter.
12. The hybrid hydraulic drive system as defined in claim 6, further comprising a particulate filter for filtering said hydraulic fluid.
13. The hybrid hydraulic drive system as defined in claim 6, further comprising a heat exchanger for cooling said hydraulic fluid.
14. The hybrid hydraulic drive system as defined in claim 13, further including a cooling fan associated with said heat exchanger for forced cooling of said hydraulic fluid flowing through said heat exchanger.
15. The hybrid hydraulic drive system as defined in claim 14, wherein said cooling fan is driven by a hydraulic motor.
16. The hybrid hydraulic drive system as defined in claim 14, wherein said cooling fan is driven by an electric motor.
17. The hybrid hydraulic drive system as defined in claim 1, wherein said reversible hydraulic machine is a reversible hydraulic pump/motor unit capable to function both as a hydraulic pump and a hydraulic motor.
18. The pressurized hydraulic fluid system as defined in claim 17, wherein said hydraulic pump/motor unit includes a variable-displacement axial piston hydraulic motor/pump.
CA2581933A 2004-09-30 2005-07-29 Hydraulic hybrid drive system Active CA2581933C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US10/953,182 2004-09-30
US10/953,182 US7273122B2 (en) 2004-09-30 2004-09-30 Hybrid hydraulic drive system with engine integrated hydraulic machine
PCT/US2005/027236 WO2006038968A1 (en) 2004-09-30 2005-07-29 Hydraulic hybrid drive system

Publications (2)

Publication Number Publication Date
CA2581933A1 true CA2581933A1 (en) 2006-04-13
CA2581933C CA2581933C (en) 2011-02-01

Family

ID=35276635

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2581933A Active CA2581933C (en) 2004-09-30 2005-07-29 Hydraulic hybrid drive system

Country Status (7)

Country Link
US (1) US7273122B2 (en)
EP (1) EP1799481A1 (en)
JP (1) JP2008514506A (en)
CN (1) CN100544989C (en)
AU (1) AU2005292643B2 (en)
CA (1) CA2581933C (en)
WO (1) WO2006038968A1 (en)

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CN101068696A (en) 2007-11-07
US7273122B2 (en) 2007-09-25
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CN100544989C (en) 2009-09-30
AU2005292643A1 (en) 2006-04-13

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