DE102005009638A1 - Vehicle having exhaust gas recirculation system e.g. for diesel engine, has branch-off valve located in exhaust gas tract, having inlet and outlet connected to exhaust gas tail pipe - Google Patents
Vehicle having exhaust gas recirculation system e.g. for diesel engine, has branch-off valve located in exhaust gas tract, having inlet and outlet connected to exhaust gas tail pipe Download PDFInfo
- Publication number
- DE102005009638A1 DE102005009638A1 DE102005009638A DE102005009638A DE102005009638A1 DE 102005009638 A1 DE102005009638 A1 DE 102005009638A1 DE 102005009638 A DE102005009638 A DE 102005009638A DE 102005009638 A DE102005009638 A DE 102005009638A DE 102005009638 A1 DE102005009638 A1 DE 102005009638A1
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- DE
- Germany
- Prior art keywords
- exhaust gas
- flap
- vehicle according
- exhaust
- tract
- 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.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
- F02D9/04—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits concerning exhaust conduits
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/02—EGR systems specially adapted for supercharged engines
- F02M26/04—EGR systems specially adapted for supercharged engines with a single turbocharger
- F02M26/06—Low pressure loops, i.e. wherein recirculated exhaust gas is taken out from the exhaust downstream of the turbocharger turbine and reintroduced into the intake system upstream of the compressor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/02—EGR systems specially adapted for supercharged engines
- F02M26/09—Constructional details, e.g. structural combinations of EGR systems and supercharger systems; Arrangement of the EGR and supercharger systems with respect to the engine
- F02M26/10—Constructional details, e.g. structural combinations of EGR systems and supercharger systems; Arrangement of the EGR and supercharger systems with respect to the engine having means to increase the pressure difference between the exhaust and intake system, e.g. venturis, variable geometry turbines, check valves using pressure pulsations or throttles in the air intake or exhaust system
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
- F02M26/14—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the exhaust system
- F02M26/16—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the exhaust system with EGR valves located at or near the connection to the exhaust system
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/65—Constructional details of EGR valves
- F02M26/70—Flap valves; Rotary valves; Sliding valves; Resilient valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/65—Constructional details of EGR valves
- F02M26/71—Multi-way valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B29/00—Engines characterised by provision for charging or scavenging not provided for in groups F02B25/00, F02B27/00 or F02B33/00 - F02B39/00; Details thereof
- F02B29/04—Cooling of air intake supply
- F02B29/0406—Layout of the intake air cooling or coolant circuit
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B3/00—Engines characterised by air compression and subsequent fuel addition
- F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition
Abstract
Description
Die vorliegende Erfindung betrifft ein Fahrzeug gemäß dem Oberbegriff des Patentanspruches 1.The The present invention relates to a vehicle according to the preamble of claim 1.
Stand der Technik sind Fahrzeuge mit Dieselmotoren, die mit einem Turbolader, einem Ladeluftkühler und einer Abgasrückführeinrichtung ausgestattet sind. Üblicherweise ist im Abgastrakt ein "Abzweigventil" angeordnet, das einen ersten, zum Abgasendrohr führenden Ausgang, sowie einen zweiten Ausgang aufweist, der mit dem Ansaugtrakt des Motors verbunden ist. Über den zweiten Ausgang kann der im Ansaugtrakt angesaugten Luft Abgas beigemischt werden.was standing the technology are vehicles with diesel engines, with a turbocharger, a charge air cooler and an exhaust gas recirculation device are equipped. Usually is located in the exhaust tract a "branch valve", the a first, leading to the exhaust end pipe Output, as well as having a second output, with the intake connected to the engine. about the second outlet can sucked in the intake tract air exhaust be mixed.
Aufgabe der Erfindung ist es, ein Fahrzeug zu schaffen, dessen Abgasrückführeinrichtung mit einem verbesserten Abzweigventil ausgestattet ist.task The invention is to provide a vehicle whose exhaust gas recirculation device equipped with an improved branch valve.
Diese Aufgabe wird durch die Merkmale des Patentanspruches 1 gelöst. Vorteilhafte Ausgestaltungen und Weiterbildungen der Erfindung sind den Unteransprüchen zu entnehmen.These The object is solved by the features of claim 1. advantageous Refinements and developments of the invention are the dependent claims remove.
Die Erfindung geht von einem Fahrzeug mit einem Motor, insbesondere mit einem Dieselmotor aus, der einen Ansaugtrakt, einen Abgastrakt und ein Abzweigventil aufweist. Über den Ansaugtrakt wird der Motor mit Luft versorgt. Über den Abgastrakt wird das vom Motor erzeugte Abgas in Richtung zu einem Abgasendrohr hin in die Umgebung abgeführt. Das Abzweigventil ist in dem Abgastrakt angeordnet. Es weist einen motorseitigen Eingang sowie einen ersten und einen zweiten Ausgang auf. Der erste Ausgang des Abzweigventils führt zum Abgasendrohr. Durch den ersten Ausgang strömt also derjenige Abgasteilvolumenstrom, der an die Umgebung abgeführt werden soll. Der zweite Ausgang des Abzweigventils ist mit dem Ansaugtrakt verbunden. Über den zweiten Ausgang kann ein Teilabgasvolumenstrom in den Ansaugtrakt des Motors geleitet werden.The Invention is based on a vehicle with a motor, in particular with a diesel engine that has an intake tract, an exhaust tract and a branch valve. about the intake tract is supplied with air to the engine. On the Exhaust tract, the exhaust gas generated by the engine is towards an exhaust tailpipe discharged into the environment. The branch valve is arranged in the exhaust tract. It has one motor-side input and a first and a second output on. The first output of the branch valve leads to the exhaust end pipe. By the first output flows that is, the exhaust gas part volumetric flow that is discharged to the environment should. The second outlet of the branch valve is with the intake tract connected. about The second output can be a partial exhaust gas flow in the intake be routed to the engine.
Der Kern der Erfindung besteht darin, dass das Abzweigventil zwei kinematisch miteinander gekoppelte Klappen aufweist. Man kann daher auch von einem Abzweigventil sprechen, das eine „Doppelklappe" aufweist. Die erste Klappe ist dem ersten Ausgang zugeordnet und die zweite Klappe ist dem zweiten Ausgang und/oder dem ersten Ausgang zugeordnet. Der Begriff „und/oder" bedeutet in diesem Zusammenhang folgendes. Es kann vorgesehen sein, dass der erste Ausgang durch die erste Klappe vollständig verschließbar ist und dass der zweite Ausgang durch die zweite Klappe vollständig verschließbar ist. Alternativ dazu kann vorgesehen sein, dass lediglich ein Teilquerschnitt des ersten Ausgangs durch die erste Klappe abgedeckt ist und somit nur dieser Teilquerschnitt durch die erste Klappe verschließbar ist und dass ein anderer Teilquerschnitt oder der verbleibende Teilquerschnitt, der durch die erste Klappe nicht verschließbar ist, durch die zweite Klappe verschließbar ist. In diesem Fall kann mit der zweiten Klappe also, je nach Klappenstellung, ein Teilquerschnitt des ersten Ausgangs oder der gesamte zweite Ausgang verschlossen werden.Of the Essence of the invention is that the branch valve two kinematically having mutually coupled flaps. One can therefore also from speak a branch valve having a "double flap" Flap is assigned to the first outlet and the second flap is assigned to the second output and / or the first output. Of the Term "and / or" means in this context following. It can be provided that the first output by the first flap completely lockable is and that the second output is completely closed by the second flap. Alternatively, it can be provided that only a partial cross section the first output is covered by the first flap and thus only this partial cross section can be closed by the first flap and that another partial cross section or the remaining partial cross section, which can not be closed by the first flap, through the second flap lockable is. In this case, with the second flap, depending on the flap position, a partial cross section of the first output or the entire second Exit be closed.
Die beiden Klappen sind zwischen dem motorseitigen Eingang und dem jeweiligen Ausgang des Abzweigventils angeordnet. Der Begriff "kinematisch gekoppelt" ist breit auszulegen und ganz allgemein so zu verstehen, dass die beiden Klappen gleichzeitig bewegbar sind. Die beiden Klappen können mechanisch z.B. über einen Gestängemechanismus, einen Zahnradtrieb, einen Riementrieb, einen Kettentrieb o.ä. miteinander gekoppelt sein. Die beiden Klappen müssen aber nicht notwendigerweise mechanisch miteinander gekoppelt sein. Es kann auch vorgesehen sein, dass sie von jeweils separaten "Aktoren", z.B. jeweils einem Elektro- bzw. Servoantrieb, einem Hydraulikantrieb, einem Pneumatikantrieb o.ä. betätigt werden.The both flaps are between the engine-side entrance and the respective one Output of the branch valve arranged. The term "kinematically coupled" is to be interpreted broadly and in a general way to understand that the two flaps simultaneously are movable. The two flaps can be mechanically, e.g. over one Linkage mechanism a gear drive, a belt drive, a chain drive or similar. together be coupled. The two flaps do not necessarily have to be mechanically coupled together. It can also be provided that they are from separate "actuators", e.g. one each Electric or servo drive, a hydraulic drive, a pneumatic drive etc. be operated.
Vorzugsweise sind die beiden Klappen "gegenläufig" kinematisch miteinander gekoppelt. „Gegenläufig" bedeutet in diesem Zusammenhang, dass beim Öffnen der ersten Klappe die zweite Klappe geschlossen wird und umgekehrt.Preferably are the two flaps "in opposite directions" kinematically with each other coupled. "Opposite" means in this Related to that when opening the first flap, the second flap is closed and vice versa.
Nach einer Weiterbildung der Erfindung ist der Motor mit einem Abgasturbolader ausgerüstet. Der Abgasturbolader weist bekanntermaßen einen Verdichter und eine Turbine auf. Der Verdichter ist im Ansaugtrakt des Motors angeordnet. Zwischen dem Verdichter und dem Motor kann ferner ein Ladeluftkühler angeordnet sein. Der Verdichter ist über eine Welle mit der Turbine des Abgasturboladers gekoppelt, die im Abgastrakt des Motors angeordnet ist. Im Bereich zwischen der Turbine und dem Abgasendrohr, d.h. in Strömungsrichtung gesehen hinter der Turbine, kann zusätzlich ein Russpartikelfilter angeordnet sein.To a development of the invention is the engine with an exhaust gas turbocharger equipped. Of the Exhaust gas turbocharger is known to have a compressor and a Turbine on. The compressor is located in the intake tract of the engine. Furthermore, a charge air cooler can be arranged between the compressor and the engine be. The compressor is over a shaft coupled to the turbine of the exhaust gas turbocharger, in the Exhaust tract of the engine is arranged. In the area between the turbine and the exhaust tailpipe, i. behind in the direction of flow the turbine, in addition a soot particle filter may be arranged.
Vorzugsweise ist das Abzweigventil, in Strömungsrichtung des Abgases gesehen, nach dem Russpartikelfilter angeordnet. Das dem Ansaugtrakt zugeführte Abgas ist also frei bzw. nahezu frei von Rußpartikeln, was den Vorteil hat, dass das rückgeführte Abgas den Ansaugtrakt nicht verunreinigt. Ein weiterer Vorteil besteht darin, dass der gesamte Abgasvolumenstrom die Turbine des Abgasturboladers durchströmt, so dass die gesamte kinetische Energie des Abgases optimal genutzt werden kann.Preferably is the branch valve, in the flow direction of the exhaust gas, arranged after the soot particle filter. The fed to the intake Exhaust gas is thus free or almost free of soot particles, which is the advantage has that recirculated exhaust the intake tract is not contaminated. Another advantage exists in that the entire exhaust gas volume flow flows through the turbine of the exhaust gas turbocharger, so that the entire kinetic energy of the exhaust gas can be optimally utilized can.
Das über das Abzweigventil abgezweigte Abgas kann dem Ansaugtrakt in Strömungsrichtung gesehen vor dem Verdichter zugeführt werden. Alternativ dazu kann das rückgeführte Abgas dem Ansaugtrakt auch unmittelbar über das Verdichtergehäuse zugeführt werden. Die Klappen des Abzweigventils weisen jeweils eine Grundstellung auf, in der das gesamte vom Motor abgegebene Abgas zum Abgasendrohr geleitet wird und die Verbindung zum Ansaugtrakt hin abgesperrt ist. Durch das "Öffnen" des Abzweigventils wird die Fluidverbindung zum Ansaugtrakt hin immer mehr geöffnet und gleichzeitig der erste Ausgang, d.h. die Fluidverbindung, die zum Abgasendrohr führt, immer weiter verschlossen. Die zweite Klappe dient dabei sowohl als Regelklappe für den das Abzweigventil mit dem Ansaugtrakt verbindenden Abgasrückführkanal als auch, bei weiterem Öffnen, als Drosselklappe für den in Richtung des Abgasendrohrs hin strömenden Abgasstrom. Die erste Klappe verschließt den ersten Ausgang des Abzweigventils in entgegengesetzter Richtung wie die zweite Klappe.The branched off via the branch valve Exhaust gas can be supplied to the intake tract in the flow direction before the compressor. Alternatively, the recirculated exhaust gas can also be supplied to the intake tract directly via the compressor housing. The flaps of the branch valve each have a basic position in which all the exhaust gas emitted by the engine is passed to the exhaust end pipe and the connection to the intake is shut off. As a result of the "opening" of the branch valve, the fluid connection to the intake tract is increasingly opened and, at the same time, the first outlet, ie the fluid connection leading to the exhaust end tube, is increasingly closed. The second flap serves both as a control valve for connecting the branch valve with the intake manifold exhaust gas recirculation channel as well as, on further opening, as a throttle valve for the exhaust gas flowing in the direction of the exhaust end pipe. The first flap closes the first outlet of the branch valve in the opposite direction as the second flap.
Nach einer Weiterbildung der Erfindung ist zwischen der "Entnahmestelle" im Abgastrakt und dem Ansaugtrakt, d.h. im Bereich zwischen dem Rußpartikelfilter und dem Ansaugtrakt, ein Kühler angeordnet, der das rückgeführte Abgas kühlt.To a development of the invention is between the "sampling point" in the exhaust system and the Intake tract, i. in the area between the soot particle filter and the intake tract, a cooler arranged, which is the recirculated exhaust gas cools.
Das Abzweigventil und die Fluidleitung zur Rückführung von Abgas aus dem Abgastrakt in den Ansaugtrakt sowie der Kühler zur Kühlung des rückgeführten Abgases können unmittelbar am Rußpartikelfilter angeordnet sein. Vorzugsweise bilden der Abgaskrümmer des Motors, der Abgasturbolader, der Rußpartikelfilter und das Abzweigventil eine vormontierte bauliche Einheit.The Branch valve and the fluid line for the return of exhaust gas from the exhaust tract in the intake tract as well as the radiator for cooling the recirculated exhaust gas can directly on the soot particle filter be arranged. Preferably, the exhaust manifold of the engine, the exhaust gas turbocharger, the soot particle filter and the branch valve is a preassembled structural unit.
Im Folgenden wird die Erfindung im Zusammenhang mit der Zeichnung näher erläutert. Es zeigen:in the The invention will be explained in more detail in connection with the drawing. It demonstrate:
Im
Abgastrakt
Mit
zunehmender "Öffnung" des Abzweigventils
In
den
Wie
am besten aus den
Die
beiden Klappen
In
der in
Bei
dem in den
Charakteristisch
für das
in den
Claims (14)
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102005009638A DE102005009638A1 (en) | 2005-03-03 | 2005-03-03 | Vehicle having exhaust gas recirculation system e.g. for diesel engine, has branch-off valve located in exhaust gas tract, having inlet and outlet connected to exhaust gas tail pipe |
PCT/EP2005/012412 WO2006076938A1 (en) | 2005-01-18 | 2005-11-19 | Vehicle comprising an exhaust gas recirculation system |
JP2007551551A JP2008527248A (en) | 2005-01-18 | 2005-11-19 | Vehicle with exhaust recirculation system |
EP05810846A EP1838958A1 (en) | 2005-01-18 | 2005-11-19 | Vehicle comprising an exhaust gas recirculation system |
US11/826,661 US20070261683A1 (en) | 2005-01-18 | 2007-07-17 | Vehicle having an exhaust gas recirculation system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102005009638A DE102005009638A1 (en) | 2005-03-03 | 2005-03-03 | Vehicle having exhaust gas recirculation system e.g. for diesel engine, has branch-off valve located in exhaust gas tract, having inlet and outlet connected to exhaust gas tail pipe |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102005009638A1 true DE102005009638A1 (en) | 2006-09-07 |
Family
ID=36848073
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102005009638A Withdrawn DE102005009638A1 (en) | 2005-01-18 | 2005-03-03 | Vehicle having exhaust gas recirculation system e.g. for diesel engine, has branch-off valve located in exhaust gas tract, having inlet and outlet connected to exhaust gas tail pipe |
Country Status (1)
Country | Link |
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DE (1) | DE102005009638A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2322783A1 (en) * | 2009-11-16 | 2011-05-18 | Volkswagen Aktiengesellschaft | Valve assembly for opening or closing a branch passage |
EP3133270A1 (en) * | 2015-10-06 | 2017-02-22 | Borgwarner Emissions Systems Spain, S.L.U. | Device for managing exhaust gas in an internal combustion engine |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2000028203A1 (en) * | 1998-11-09 | 2000-05-18 | Stt Emtec Aktiebolag | A method and device for an egr-system and a valve as well as a regulation method and device |
US6263672B1 (en) * | 1999-01-15 | 2001-07-24 | Borgwarner Inc. | Turbocharger and EGR system |
DE10244535A1 (en) * | 2002-09-25 | 2004-04-08 | Daimlerchrysler Ag | Internal combustion engine with a compressor in the intake tract |
EP1455078A1 (en) * | 2003-03-06 | 2004-09-08 | Ford Global Technologies, Inc., A subsidiary of Ford Motor Company | Internal combustion engine having a turbocharger and an exhaust gas recirculation system |
-
2005
- 2005-03-03 DE DE102005009638A patent/DE102005009638A1/en not_active Withdrawn
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2000028203A1 (en) * | 1998-11-09 | 2000-05-18 | Stt Emtec Aktiebolag | A method and device for an egr-system and a valve as well as a regulation method and device |
US6263672B1 (en) * | 1999-01-15 | 2001-07-24 | Borgwarner Inc. | Turbocharger and EGR system |
DE10244535A1 (en) * | 2002-09-25 | 2004-04-08 | Daimlerchrysler Ag | Internal combustion engine with a compressor in the intake tract |
EP1455078A1 (en) * | 2003-03-06 | 2004-09-08 | Ford Global Technologies, Inc., A subsidiary of Ford Motor Company | Internal combustion engine having a turbocharger and an exhaust gas recirculation system |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2322783A1 (en) * | 2009-11-16 | 2011-05-18 | Volkswagen Aktiengesellschaft | Valve assembly for opening or closing a branch passage |
EP3133270A1 (en) * | 2015-10-06 | 2017-02-22 | Borgwarner Emissions Systems Spain, S.L.U. | Device for managing exhaust gas in an internal combustion engine |
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