DE102015216730A1 - Motor vehicle with exhaust gas recirculation - Google Patents
Motor vehicle with exhaust gas recirculation Download PDFInfo
- Publication number
- DE102015216730A1 DE102015216730A1 DE102015216730.5A DE102015216730A DE102015216730A1 DE 102015216730 A1 DE102015216730 A1 DE 102015216730A1 DE 102015216730 A DE102015216730 A DE 102015216730A DE 102015216730 A1 DE102015216730 A1 DE 102015216730A1
- Authority
- DE
- Germany
- Prior art keywords
- exhaust gas
- exhaust
- motor vehicle
- line
- cooler
- 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.)
- Ceased
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Classifications
-
- 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
- F02M26/35—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with means for cleaning or treating the recirculated gases, e.g. catalysts, condensate traps, particle filters or heaters
-
- 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
- F02B29/0418—Layout of the intake air cooling or coolant circuit the intake air cooler having a bypass or multiple flow paths within the heat exchanger to vary the effective heat transfer surface
-
- 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
- F02M26/22—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with coolers in the recirculation passage
- F02M26/23—Layout, e.g. schematics
- F02M26/25—Layout, e.g. schematics with coolers having bypasses
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust-Gas Circulating Devices (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
Es wird ein Kraftfahrzeug (10) mit einem Motor (11), einem Zuluftstrang (12), einem Abgasstrang (13), einer in dem Abgasstrang (13) angeordneten ersten Abgasnachbehandlungseinrichtung (22), und einer Niederdruck-Abgasrückführung mit einem Abgasrückführungsstrang (19), der ausgebildet ist, Abgas (36) aus dem Abgasstrang (13) von einer Abgasentnahmestelle (24) an eine in dem Zuluftstrang (12) angeordnete Abgaseinleitstelle (25) zu leiten, bereitgestellt. Das Kraftfahrzeug (10) weist erfindungsgemäß einen im Abgasrückführungsstrang (19) angeordneten Abgaskühler (20) und einen parallel zum Abgaskühler (20) angeordneten Abgaskühlerbypass (21) auf, der ausgebildet ist, zurückgeführtes Abgas (37) um den Abgaskühler (20) herum zu leiten. Das Kraftfahrzeug (10) weist zumindest ein Ventil (26, 32) zur Drosselung eines Massenstroms von Frischluft (30) sowie eine Steuereinheit (39) auf, die ausgebildet ist, einen Schubbetrieb des Kraftfahrzeugs (10) zu erkennen und das zumindest eine Ventil (26, 32, 33) während des Schubbetriebs in der Weise zu stellen, dass dem Motor (11) Ladungsgas (35), das zurückgeführtes Abgas (37) aufweist, zuführbar ist.It is a motor vehicle (10) with an engine (11), a Zuluftstrang (12), an exhaust line (13), in the exhaust line (13) arranged first exhaust aftertreatment device (22), and a low-pressure exhaust gas recirculation with an exhaust gas recirculation train (19 ), which is designed to exhaust gas (36) from the exhaust line (13) from an exhaust gas sampling point (24) to a in the Zuluftstrang (12) arranged Abgaseinleitstelle (25) to direct. According to the invention, the motor vehicle (10) has an exhaust gas cooler (20) arranged in the exhaust gas recirculation line (19) and an exhaust gas cooler bypass (21) arranged parallel to the exhaust gas cooler (20) and designed to recirculate exhaust gas (37) around the exhaust gas cooler (20) conduct. The motor vehicle (10) has at least one valve (26, 32) for throttling a mass flow of fresh air (30) and a control unit (39) which is designed to detect a coasting operation of the motor vehicle (10) and the at least one valve ( 26, 32, 33) during the pushing operation in such a way that the engine (11) charge gas (35) having recirculated exhaust gas (37) can be fed.
Description
Die vorliegende Erfindung betrifft ein Kraftfahrzeug nach dem Oberbegriff des Anspruchs 1.The present invention relates to a motor vehicle according to the preamble of
Im Stand der Technik ist beispielsweise aus der
Die
Die
Aus der
Aus der
Die
Der vorliegenden Erfindung liegt die Aufgabe zugrunde, mittels der Abgasrückführung günstigere Bedingungen für Abgasnachbehandlungseinrichtungen zu erzeugen.The present invention has for its object, by means of exhaust gas recirculation cheaper Conditions for exhaust aftertreatment devices to produce.
Gelöst wird diese Aufgabe mit einem Kraftfahrzeug nach Anspruch 1. Vorteilhafte Weiterbildungen der Erfindung sind in den Unteransprüchen angegeben und in der Beschreibung beschrieben.This object is achieved with a motor vehicle according to
Das erfindungsgemäße Kraftfahrzeug weist einen Motor, einen Zuluftstrang, einen Abgasstrang, eine in dem Abgasstrang angeordnete erste Abgasnachbehandlungseinrichtung, und eine Niederdruck-Abgasrückführung mit einem Abgasrückführungsstrang, der ausgebildet ist, Abgas aus dem Abgasstrang von einer Abgasentnahmestelle an eine in dem Zuluftstrang angeordnete Abgaseinleitstelle zu leiten, auf. Das Kraftfahrzeug weist erfindungsgemäß einen im Abgasrückführungsstrang angeordneten Abgaskühler und einen parallel zum Abgaskühler angeordneten Abgaskühlerbypass auf, der ausgebildet ist, zurückgeführtes Abgas um den Abgaskühler herum zu leiten. Das Kraftfahrzeug weist zumindest ein Ventil zur Drosselung eines Massenstroms von Frischluft sowie eine Steuereinheit auf, die ausgebildet ist, einen Schubbetrieb des Kraftfahrzeugs zu erkennen und das zumindest eine Ventil während des Schubbetriebs in der Weise zu stellen, dass dem Motor Ladungsgas, das zurückgeführtes Abgas aufweist, zuführbar ist.The motor vehicle according to the invention comprises an engine, a supply air line, an exhaust line, a first exhaust gas aftertreatment device arranged in the exhaust line, and a low-pressure exhaust gas recirculation with an exhaust gas recirculation line, which is designed to pass exhaust gas from the exhaust line from an exhaust gas sampling point to an exhaust gas inlet point arranged in the supply air line , on. According to the invention, the motor vehicle has an exhaust gas cooler arranged in the exhaust gas recirculation line and an exhaust gas cooler bypass arranged parallel to the exhaust gas cooler, which is designed to guide recirculated exhaust gas around the exhaust gas cooler. The motor vehicle has at least one valve for throttling a mass flow of fresh air and a control unit, which is designed to detect a coasting operation of the motor vehicle and to provide the at least one valve during the overrun mode in such a way that the engine charge gas, the recirculated exhaust gas has , can be fed.
Damit ist vorteilhaft ein Kraftfahrzeug bereitgestellt, mit welchem es ermöglicht ist, eine Abgasrückführung während eines Schubbetriebs des Kraftfahrzeugs vorzunehmen und dadurch Einfluss auf die Betriebsparameter der ersten Abgasnachbehandlungseinrichtung zu nehmen. Die erste Abgasnachbehandlungseinrichtung ist insbesondere stromaufwärts der Abgasentnahmestelle angeordnet und befindet sich damit in der Abgasrückführungsschleife.This advantageously provides a motor vehicle with which it is possible to carry out exhaust gas recirculation during a coasting operation of the motor vehicle and thereby influence the operating parameters of the first exhaust gas aftertreatment device. The first exhaust aftertreatment device is arranged in particular upstream of the exhaust gas sampling point and is thus located in the exhaust gas recirculation loop.
Mit dem Abgaskühler ist es ermöglicht, die Temperatur des zurückgeführten Abgases nach oben zu begrenzen. Der Abgaskühlerbypass ermöglicht vorteilhaft, das zurückgeführte Abgas um den Abgaskühler herum zu leiten und das zurückgeführte Abgas vom Einfluss des Abgaskühlers auszunehmen.With the exhaust gas cooler, it is possible to limit the temperature of the recirculated exhaust gas upward. The exhaust gas cooler bypass advantageously enables the recirculated exhaust gas to be routed around the exhaust gas cooler and to exclude the recirculated exhaust gas from the influence of the exhaust gas cooler.
In einer vorteilhaften Ausgestaltung des erfindungsgemäßen Kraftfahrzeugs weist der Motor zumindest einen ersten Injektor auf, der ausgebildet ist, Kraftstoff in eine Brennkammer des Motors zu spritzen. Alternativ oder zusätzlich kann das Kraftfahrzeug einen zweiten Injektor aufweisen, der ausgebildet ist, Kraftstoff in den Abgasstrang einzubringen.In an advantageous embodiment of the motor vehicle according to the invention, the engine has at least one first injector, which is designed to inject fuel into a combustion chamber of the engine. Alternatively or additionally, the motor vehicle may have a second injector, which is designed to introduce fuel into the exhaust gas line.
Damit ist es ermöglicht, die Abgasrückführung mit einer Einspritzung von Kraftstoff zu kombinieren und Einfluss auf die Zusammensetzung des Abgasstroms zu nehmen.This makes it possible to combine the exhaust gas recirculation with an injection of fuel and to influence the composition of the exhaust gas flow.
In einer weiteren vorteilhaften Ausgestaltung des erfindungsgemäßen Kraftfahrzeugs weist das Kraftfahrzeug einen im Zuluftstrang stromabwärts der Abgaseinleitstelle angeordneten Ladeluftkühler auf.In a further advantageous embodiment of the motor vehicle according to the invention, the motor vehicle has a charge air cooler arranged in the supply air line downstream of the exhaust gas introduction point.
Damit ist es ermöglicht, die Temperatur des Ladungsgases nach oben zu begrenzen.This makes it possible to limit the temperature of the charge gas upwards.
In einer weiteren vorteilhaften Ausgestaltung des erfindungsgemäßen Kraftfahrzeugs weist das Kraftfahrzeug im Zuluftstrang einen Ladeluftkühlerbypass auf, der ausgebildet ist, Ladungsgas um den Ladeluftkühler herum zu leiten.In a further advantageous embodiment of the motor vehicle according to the invention, the motor vehicle in the supply air line to a charge air cooler bypass, which is designed to direct charge gas to the charge air cooler around.
Damit ist es ermöglicht, das Ladungsgas um den Ladeluftkühler herum zu leiten und das Ladungsgas vom Einfluss des Ladeluftkühlers auszunehmen.This makes it possible to direct the charge gas around the intercooler and to exclude the charge gas from the influence of the intercooler.
Ausgestaltungs- und Ausführungsbeispiele der Erfindung werden anhand der Zeichnungen und der nachfolgenden Beschreibung näher erläutert. Es zeigen schematisch:Embodiments and embodiments of the invention will be explained in more detail with reference to the drawings and the description below. They show schematically:
In den
Das Kraftfahrzeug
Das Ladungsgas
Zum Einstellen des Verhältnisses von Frischluft
Das Kombinationsventil
Die Einlassdrosselklappe
Die Auslassdrosselklappe
Das Kraftfahrzeug
In der gezeigten Ausgestaltung ist das Kraftfahrzeug
Das Kraftfahrzeug
Das Kraftfahrzeug
Der Motor
Zudem umfasst das Kraftfahrzeug
Das Kraftfahrzeug
Bei dem Betriebsverfahren wird dem Motor
Insbesondere wird dem Motor
In den
In der
In der
Es sind verschiedene Varianten von Einspritz-, Kühl- und Klappenbeziehungsweise Ventilsituationen denkbar, die in Abhängigkeit des Zustands der ersten und zweiten Abgasnachbehandlungseinrichtung
Mittels des Ladeluftkühlers
Mittels des Abgaskühlers
BezugszeichenlisteLIST OF REFERENCE NUMBERS
- 1010
- Kraftfahrzeug motor vehicle
- 1111
- Motor engine
- 1212
- Zuluftstrang Zuluftstrang
- 1313
- Abgasstrang exhaust gas line
- 1414
- Turbolader turbocharger
- 1515
- Verdichter compressor
- 1616
- Abgasturbine exhaust turbine
- 17 17
- Ladeluftkühlerbypass Charge air cooler bypass
- 1818
- Ladeluftkühler Intercooler
- 1919
- Abgasrückführungsstrang Exhaust gas recirculation strand
- 2020
- Abgaskühler exhaust gas cooler
- 2121
- Abgaskühlerbypass EGR cooler bypass
- 2222
- Erste Abgasnachbehandlungseinrichtung First exhaust aftertreatment device
- 2323
- Zweite Abgasnachbehandlungseinrichtung Second exhaust aftertreatment device
- 2424
- Abgasentnahmestelle Exhaust extraction point
- 2525
- Abgaseinleitstelle Abgaseinleitstelle
- 2626
- Kombinationsventil combination valve
- 2727
- Ladeluftkühlerbypassventil Intercooler bypass valve
- 2828
- Abgaskühlerbypassventil EGR cooler bypass valve
- 2929
- Erster Injektor First injector
- 3030
- Frischluft fresh air
- 3131
- Kraftstoff fuel
- 3232
- Einlassdrosselklappe intake throttle
- 3333
- Auslassdrosselklappe Auslassdrosselklappe
- 3434
- Brennkammer combustion chamber
- 3535
- Ladungsgas gas charge
- 3636
- Abgas exhaust
- 3737
- Zurückgeführtes Abgas Recirculated exhaust gas
- 3838
- Abgeleitetes Abgas Derived exhaust
- 3939
- Steuereinheit control unit
- 4040
- Fahrpedalsensor Accelerator pedal sensor
- 4141
- Zweiter Injektor Second injector
ZITATE ENTHALTEN IN DER BESCHREIBUNG QUOTES INCLUDE IN THE DESCRIPTION
Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- DE 102013111110 A1 [0002] DE 102013111110 A1 [0002]
- DE 102011101079 A1 [0003] DE 102011101079 A1 [0003]
- DE 102010063872 A1 [0004] DE 102010063872 A1 [0004]
- DE 112008003421 T5 [0005] DE 112008003421 T5 [0005]
- DE 102011107692 B3 [0006] DE 102011107692 B3 [0006]
- DE 102008015600 A1 [0007] DE 102008015600 A1 [0007]
Claims (5)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102015202884 | 2015-02-18 | ||
DE102015202884.4 | 2015-02-18 |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102015216730A1 true DE102015216730A1 (en) | 2016-08-18 |
Family
ID=56552514
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102015216730.5A Ceased DE102015216730A1 (en) | 2015-02-18 | 2015-09-02 | Motor vehicle with exhaust gas recirculation |
Country Status (1)
Country | Link |
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DE (1) | DE102015216730A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102018131536A1 (en) * | 2018-12-10 | 2020-06-10 | Volkswagen Aktiengesellschaft | Internal combustion engine and method for exhaust gas aftertreatment of an internal combustion engine |
DE102021203431A1 (en) | 2021-04-07 | 2022-10-13 | Volkswagen Aktiengesellschaft | Diagnostic methods, control, motor vehicle |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008015600A1 (en) | 2008-03-26 | 2009-10-01 | Volkswagen Ag | Method for operating internal combustion engine, particularly diesel engine, involves guiding exhaust gas over particle filter, particularly diesel particle filter, in exhaust gas system |
DE112008003421T5 (en) | 2007-12-20 | 2010-10-14 | GM Global Technology Operations, Inc., Detroit | Regeneration system and method for exhaust aftertreatment devices |
DE102010063872A1 (en) | 2009-12-23 | 2011-07-07 | Ford Global Technologies, LLC, Mich. | Emission control system and systems |
DE102011101079A1 (en) | 2011-05-10 | 2012-11-15 | Umicore Ag & Co. Kg | Process for the regeneration of NOx storage catalytic converters of diesel engines with low-pressure EGR |
DE102011107692B3 (en) | 2011-07-13 | 2013-01-03 | Umicore Ag & Co. Kg | Process for reactivating exhaust gas purification systems of diesel engines with low-pressure EGR |
DE102013111110A1 (en) | 2012-10-10 | 2014-04-10 | Ford Global Technologies, Llc | APPROACH TO CONTROLLING EXHAUST GAS RECYCLING |
DE102013200536B3 (en) * | 2013-01-16 | 2014-05-28 | Robert Bosch Gmbh | Method for diagnosing low-pressure exhaust-gas recirculation of internal combustion engine, involves judging difference between determined low pressure exhaust gas reconducting mass flow and estimated value during deviation of error signal |
-
2015
- 2015-09-02 DE DE102015216730.5A patent/DE102015216730A1/en not_active Ceased
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE112008003421T5 (en) | 2007-12-20 | 2010-10-14 | GM Global Technology Operations, Inc., Detroit | Regeneration system and method for exhaust aftertreatment devices |
DE102008015600A1 (en) | 2008-03-26 | 2009-10-01 | Volkswagen Ag | Method for operating internal combustion engine, particularly diesel engine, involves guiding exhaust gas over particle filter, particularly diesel particle filter, in exhaust gas system |
DE102010063872A1 (en) | 2009-12-23 | 2011-07-07 | Ford Global Technologies, LLC, Mich. | Emission control system and systems |
DE102011101079A1 (en) | 2011-05-10 | 2012-11-15 | Umicore Ag & Co. Kg | Process for the regeneration of NOx storage catalytic converters of diesel engines with low-pressure EGR |
DE102011107692B3 (en) | 2011-07-13 | 2013-01-03 | Umicore Ag & Co. Kg | Process for reactivating exhaust gas purification systems of diesel engines with low-pressure EGR |
DE102013111110A1 (en) | 2012-10-10 | 2014-04-10 | Ford Global Technologies, Llc | APPROACH TO CONTROLLING EXHAUST GAS RECYCLING |
DE102013200536B3 (en) * | 2013-01-16 | 2014-05-28 | Robert Bosch Gmbh | Method for diagnosing low-pressure exhaust-gas recirculation of internal combustion engine, involves judging difference between determined low pressure exhaust gas reconducting mass flow and estimated value during deviation of error signal |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102018131536A1 (en) * | 2018-12-10 | 2020-06-10 | Volkswagen Aktiengesellschaft | Internal combustion engine and method for exhaust gas aftertreatment of an internal combustion engine |
US11333106B2 (en) | 2018-12-10 | 2022-05-17 | Volkswagen Akiihngesellschaft | Internal combustion engine and method for exhaust aftertreatment thereof |
DE102021203431A1 (en) | 2021-04-07 | 2022-10-13 | Volkswagen Aktiengesellschaft | Diagnostic methods, control, motor vehicle |
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