EP1838958A1 - Fahrzeug mit abgasrückfürsystem - Google Patents
Fahrzeug mit abgasrückfürsystemInfo
- Publication number
- EP1838958A1 EP1838958A1 EP05810846A EP05810846A EP1838958A1 EP 1838958 A1 EP1838958 A1 EP 1838958A1 EP 05810846 A EP05810846 A EP 05810846A EP 05810846 A EP05810846 A EP 05810846A EP 1838958 A1 EP1838958 A1 EP 1838958A1
- Authority
- EP
- European Patent Office
- 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.)
- Withdrawn
Links
Classifications
-
- 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
-
- 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
- F02M26/13—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
- F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
- F02M26/38—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with two or more EGR valves disposed in parallel
-
- 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
- F02M26/51—EGR valves combined with other devices, e.g. with intake valves or compressors
-
- 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
- F02M26/52—Systems for actuating EGR valves
- F02M26/59—Systems for actuating EGR valves using positive pressure actuators; Check valves therefor
- F02M26/61—Systems for actuating EGR valves using positive pressure actuators; Check valves therefor in response to exhaust pressure
- F02M26/615—Systems for actuating EGR valves using positive pressure actuators; Check valves therefor in response to exhaust pressure the exhaust back pressure
-
- 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
-
- 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
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Definitions
- the present invention relates to a vehicle according to the preamble of claim 1.
- the prior art are vehicles with diesel engines, which are equipped with a turbocharger, a charge air cooler and an exhaust gas recirculation device.
- a "branch valve” is arranged, which has a first, leading to the exhaust end pipe outlet and a second output which is connected to the intake manifold of the engine. Exhaust gas can be added to the air drawn in the intake tract via the second outlet.
- the object of the invention is to provide a vehicle whose exhaust gas recirculation device is equipped with an improved branch valve.
- the invention is based on a vehicle with an engine, in particular with a diesel engine, which has an intake tract, an exhaust tract and a branch valve.
- the engine is supplied with air via the intake tract.
- the exhaust gas generated by the engine is discharged into the environment via an exhaust gas tract in the direction of an exhaust end pipe.
- the branch valve is arranged in the exhaust tract. It has a motor-side input and a first and a second output.
- the first output of the branch valve leads to the exhaust end pipe.
- the second outlet of the branch valve is connected to the intake tract. Via the second output, a partial exhaust gas volume flow can be directed into the intake tract of the engine.
- the branch valve has two kinematic coupled flaps. It is therefore also possible to speak of a diverter valve having a "double flap.”
- the first flap is associated with the first outlet and the second flap is associated with the second outlet and / or the first outlet Connection following. It can be provided that the first outlet can be completely closed by the first flap and that the second outlet can be completely closed by the second flap.
- the two flaps are arranged between the engine-side inlet and the respective outlet of the branch valve.
- the term "kinematically coupled” is to be interpreted broadly and in general to mean that the two flaps are movable at the same time.
- the two flaps can be mechanically coupled to one another eg via a linkage mechanism, a gearwheel drive, a belt drive, a chain drive or the like.
- the two flaps do not necessarily have to be mechanically coupled to one another. It can also be provided that they are actuated by separate "actuators", for example in each case an electric or servo drive, a hydraulic drive, a pneumatic drive or the like.
- the two flaps are “kinematically coupled” in opposite directions.
- “Opposite” in this context means that when opening the first flap the second flap is closed and vice versa.
- the engine is equipped with an exhaust gas turbocharger.
- the exhaust gas turbocharger is known to have a compressor and a turbine.
- the compressor is located in the intake tract of the engine.
- an intercooler may be arranged between the compressor and the engine.
- the compressor is coupled via a shaft to the turbine of the exhaust gas turbocharger, which is arranged in the exhaust tract of the engine.
- Soot particle filter may be arranged in the area between the turbine and the exhaust tailpipe, i. seen in the flow direction behind the turbine.
- the branch valve seen in the flow direction of the exhaust gas, arranged after the soot particle filter.
- the exhaust gas supplied to the intake tract is thus free or virtually free of soot particles, which has the advantage that the recirculated exhaust gas does not contaminate the intake tract.
- the exhaust branched off via the branch valve can be fed to the intake tract in the flow direction upstream of the compressor.
- 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. By "opening" the diverter valve, the fluid connection to the intake tract is opened more and more, and at the same time the first output, i. the fluid connection leading to the exhaust end, always closed further.
- the second flap serves both as a control flap for the exhaust gas recirculation channel connecting the branch valve to the intake tract and, on further opening, as a throttle flap for the exhaust gas stream 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.
- the invention is between the "sampling point" in the exhaust tract and the intake tract, i. arranged in the region between the particulate filter and the intake, a cooler which cools the recirculated exhaust gas.
- the branch valve and the fluid line for returning exhaust gas from the exhaust tract into the intake tract and the cooler for cooling the recirculated exhaust gas can be arranged directly on the soot particle filter.
- the exhaust manifold of the engine, the exhaust gas turbocharger, the particulate filter and the branch valve form a preassembled structural unit.
- Figure 1 is a schematic representation for explaining a first
- Figure 2 is a schematic representation for explaining a second
- Figures 3-6 the branch valve in different operating positions.
- Figure 1 shows a schematic representation of a turbo diesel engine 1 with an intake tract 2 and an exhaust tract 3.
- a compressor is arranged, which is rotationally coupled to a turbine 5, which is arranged in the exhaust tract 3.
- the compressor 4 and the turbine 5 form an exhaust turbocharger.
- the turbine 5 is flowed through by the exhaust gas of the diesel engine 1 and drives the compressor 4 at.
- the compressor 4 sucks in fresh air via an air filter not shown here, compresses it and leads the compressed fresh air via a charge air cooler 6, in which the compressed fresh air is cooled, the diesel engine 1 to.
- a soot particle filter 7 is arranged after the turbine 5, which filters out a large part of the soot particles contained in the exhaust gas.
- a branch valve 8 is arranged downstream of the soot particle filter.
- the branch valve 8 has a basic position in which the entire exhaust gas volume flow flows out of the exhaust gas tract into the environment via an exhaust gas end pipe (not further illustrated here).
- the branch valve 8 Via a connecting line 9, the branch valve 8 is connected to the intake tract 2.
- the connecting line 9 opens in the intake before the compressor 4 in the intake.
- the branch valve 8 is an electronically controllable valve whose valve position is controlled in dependence on various engine or operating state parameters. Since the recirculated exhaust gas is taken from the exhaust tract 3 after the soot particle filter 7, it can be fed to the intake tract 2 easily before the compressor 4 and the charge air cooler 6.
- Figure 2 shows a variant of the embodiment of Figure 1.
- the branch valve 8 is connected via the connecting line 9 directly to the compressor 4.
- the recirculated exhaust gas is thus introduced directly via the compressor housing (not shown) in the compressor 4.
- the branch valve 8 has a "motor-side" fluid inlet 10 and a first and second output 11, 12.
- the arrow also designated by the reference numeral 10, indicates the flow direction in which the exhaust gas coming from the engine or soot filter 7 flows into the branch valve 8.
- the first exit 11 leads to the exhaust end pipe (not shown). Via the first output 11, the exhaust gas flows into the environment.
- the connecting line 9 (see Fig. 1, 2) is connected. Exhaust gas can thus be passed to the intake tract 2 (see FIGS. 1, 2) via the second outlet 12.
- the branch valve 8 has a first flap 13 and a second flap 14.
- the first flap 13 is a first flap 13 and a second flap 14.
- the two flaps 13, 14 are each arranged pivotably about a pivot axis.
- the first flap 13 can be pivoted about a first pivot axis 15.
- the second flap 14 can be pivoted about a second pivot axis 16.
- the two flaps 13, 14 or their pivot axes 15, 16 are mechanically coupled to one another via a lever mechanism 17 - 19 (see FIG. When pivoting the one flap, the other flap is pivoted with, and vice versa.
- an actuator not shown here, may be provided, e.g. on an eye 20 of the lever 19 attacks.
- Figure 4 shows an operating position in which the second output 12 is slightly open.
- the second flap 14 is opened by about 20 °.
- the recognizable in Figure 4 first flap is correspondingly slightly pivoted to its closed position.
- FIG. 5 shows an operating position in which the second output 12 is almost completely opened.
- the second flap 14 is pivoted in comparison to Figure 3 by about 70 ° to the open position.
- the first flap 13 is pivoted by about 70 °. In this position, only a comparatively small partial volume flow of the exhaust gas flows via the first exit 11 to the exhaust gas.
- FIG. 6 shows a flap position in which the second outlet 12 is completely opened and the first outlet 11 is closed almost completely by the two flaps 13, 14. Thus, the majority of the exhaust gas flows via the second outlet 12 to the intake tract.
- the first output 11 is closed by both flaps 13, 14.
- the flap 13 is designed to be correspondingly larger and the first exit 11 is closed solely by the flap 13.
- Characteristic of the embodiment shown in Figures 3-6 is further that upon movement of the flaps 13, 14, their angular velocity vectors are opposite to each other. For example, as best seen in Figures 5 and 6, the flap 13 pivots out in the direction of the plane of the drawing and the flap 14 pivots toward the plane of the drawing, or vice versa. As a result of the mechanical forced coupling of the two flaps 13, 14, the flow forces acting on the flaps 13, 14 thus cancel out entirely or at least partially. An adjustment of the flaps by operating the lever 19 thus requires only relatively low actuating forces.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Exhaust Gas After Treatment (AREA)
- Supercharger (AREA)
- Exhaust-Gas Circulating Devices (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102005002266A DE102005002266A1 (de) | 2005-01-18 | 2005-01-18 | Abgasrückführsystem für eine Brennkraftmaschine |
DE102005009638A DE102005009638A1 (de) | 2005-03-03 | 2005-03-03 | Fahrzeug mit Abgasrückführsystem |
PCT/EP2005/012412 WO2006076938A1 (de) | 2005-01-18 | 2005-11-19 | Fahrzeug mit abgasrückfürsystem |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1838958A1 true EP1838958A1 (de) | 2007-10-03 |
Family
ID=35744804
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05810846A Withdrawn EP1838958A1 (de) | 2005-01-18 | 2005-11-19 | Fahrzeug mit abgasrückfürsystem |
Country Status (4)
Country | Link |
---|---|
US (1) | US20070261683A1 (de) |
EP (1) | EP1838958A1 (de) |
JP (1) | JP2008527248A (de) |
WO (1) | WO2006076938A1 (de) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20090014674A1 (en) * | 2005-05-10 | 2009-01-15 | Borgwarner Inc. | Valve regulation assembly |
FR2914952A1 (fr) * | 2007-04-10 | 2008-10-17 | Renault Sas | Dispositif et procede pour adapter un taux de gaz brules de recirculation dans un moteur |
DE102007040661A1 (de) * | 2007-08-27 | 2009-03-05 | Behr Gmbh & Co. Kg | Saugrohr für einen Verbrennungsmotor |
FR2922956A3 (fr) * | 2007-10-25 | 2009-05-01 | Renault Sas | Moteur a combustion comportant une vanne trois voies. |
DE102009012211A1 (de) * | 2009-03-11 | 2010-09-23 | Pierburg Gmbh | Klappenvorrichtung für eine Verbrennungskraftmaschine |
DE102012207122A1 (de) * | 2012-04-27 | 2013-10-31 | Continental Automotive Gmbh | Mischventil einer Brennkraftmaschine |
GB2544731B (en) * | 2015-11-19 | 2019-02-20 | Ford Global Tech Llc | An exhaust gas recirculation apparatus |
FR3046435B1 (fr) * | 2016-01-06 | 2019-05-10 | Valeo Systemes De Controle Moteur | Vanne de regulation de gaz d'echappement |
JP7129755B2 (ja) * | 2016-11-30 | 2022-09-02 | 三菱重工業株式会社 | 舶用ディーゼルエンジン |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3820514A (en) * | 1973-03-29 | 1974-06-28 | Gen Motors Corp | Exhaust gas recirculation control |
US4020809A (en) * | 1975-06-02 | 1977-05-03 | Caterpillar Tractor Co. | Exhaust gas recirculation system for a diesel engine |
US5203311A (en) * | 1990-11-06 | 1993-04-20 | Mazda Motor Corporation | Exhaust gas recirculation system for an internal combustion engine |
US5333456A (en) * | 1992-10-01 | 1994-08-02 | Carter Automotive Company, Inc. | Engine exhaust gas recirculation control mechanism |
US6000222A (en) * | 1997-12-18 | 1999-12-14 | Allied Signal Inc. | Turbocharger with integral turbine exhaust gas recirculation control valve and exhaust gas bypass valve |
SE521713C2 (sv) * | 1998-11-09 | 2003-12-02 | Stt Emtec Ab | Förfarande och anordning för ett EGR-system, samt dylik ventil |
US6089019A (en) * | 1999-01-15 | 2000-07-18 | Borgwarner Inc. | Turbocharger and EGR system |
CA2407720C (en) * | 2000-05-03 | 2008-08-26 | Dimitri L. Vamvakitis | Egr valve apparatus |
US6983596B2 (en) * | 2001-11-02 | 2006-01-10 | Borgwarner Inc. | Controlled turbocharger with integrated bypass |
DE10244535A1 (de) * | 2002-09-25 | 2004-04-08 | Daimlerchrysler Ag | Brennkraftmaschine mit einem Verdichter im Ansaugtrakt |
AT7204U1 (de) * | 2002-12-19 | 2004-11-25 | Avl List Gmbh | Verfahren zum betreiben einer direkteinspritzenden diesel-brennkraftmaschine |
JP4207695B2 (ja) * | 2003-07-02 | 2009-01-14 | マツダ株式会社 | エンジンのegr制御装置 |
US7117843B2 (en) * | 2004-10-07 | 2006-10-10 | International Engine Intellectual Property Company, Llc | Emission reduction in a diesel engine using an alternative combustion process and a low-pressure EGR loop |
EP1848888B1 (de) * | 2005-02-07 | 2010-12-01 | BorgWarner, Inc. | Agr-stellklappenmodul für einen dieselmotor |
-
2005
- 2005-11-19 EP EP05810846A patent/EP1838958A1/de not_active Withdrawn
- 2005-11-19 WO PCT/EP2005/012412 patent/WO2006076938A1/de active Application Filing
- 2005-11-19 JP JP2007551551A patent/JP2008527248A/ja active Pending
-
2007
- 2007-07-17 US US11/826,661 patent/US20070261683A1/en not_active Abandoned
Non-Patent Citations (1)
Title |
---|
See references of WO2006076938A1 * |
Also Published As
Publication number | Publication date |
---|---|
US20070261683A1 (en) | 2007-11-15 |
WO2006076938A1 (de) | 2006-07-27 |
JP2008527248A (ja) | 2008-07-24 |
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
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Inventor name: TSCHALER, GERNOT Inventor name: BARTH, WILFRIED Inventor name: MAYR, KARL Inventor name: NABECKER, ANDREAS Inventor name: WEISS, GERHARD |
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17Q | First examination report despatched |
Effective date: 20071108 |
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DAX | Request for extension of the european patent (deleted) | ||
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STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
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18D | Application deemed to be withdrawn |
Effective date: 20090603 |