WO2010121852A1 - Système de recirculation des gaz d'échappement pour un moteur à combustion interne - Google Patents

Système de recirculation des gaz d'échappement pour un moteur à combustion interne Download PDF

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Publication number
WO2010121852A1
WO2010121852A1 PCT/EP2010/052310 EP2010052310W WO2010121852A1 WO 2010121852 A1 WO2010121852 A1 WO 2010121852A1 EP 2010052310 W EP2010052310 W EP 2010052310W WO 2010121852 A1 WO2010121852 A1 WO 2010121852A1
Authority
WO
WIPO (PCT)
Prior art keywords
exhaust gas
gas recirculation
passage
exhaust
internal combustion
Prior art date
Application number
PCT/EP2010/052310
Other languages
German (de)
English (en)
Inventor
Sven Nigrin
Karsten Grimm
Andres Tönnesmann
Peter Haushälter
Original Assignee
Pierburg Gmbh
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Pierburg Gmbh filed Critical Pierburg Gmbh
Publication of WO2010121852A1 publication Critical patent/WO2010121852A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/0025—Controlling engines characterised by use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
    • F02D41/0047—Controlling exhaust gas recirculation [EGR]
    • F02D41/0065—Specific aspects of external EGR control
    • F02D41/0072—Estimating, calculating or determining the EGR rate, amount or flow
    • 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
    • F02M26/05—High pressure loops, i.e. wherein recirculated exhaust gas is taken out from the exhaust system upstream of the turbine and reintroduced into the intake system downstream 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
    • F02M26/04—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
    • F02M26/24—Layout, e.g. schematics with two or more coolers
    • 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
    • F02M26/45—Sensors specially adapted for EGR systems
    • F02M26/46—Sensors specially adapted for EGR systems for determining the characteristics of gases, e.g. composition
    • F02M26/47—Sensors specially adapted for EGR systems for determining the characteristics of gases, e.g. composition the characteristics being temperatures, pressures or flow rates
    • 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
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/0025—Controlling engines characterised by use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
    • F02D41/0047—Controlling exhaust gas recirculation [EGR]
    • F02D41/0065—Specific aspects of external EGR control
    • F02D41/0072—Estimating, calculating or determining the EGR rate, amount or flow
    • F02D2041/0075—Estimating, calculating or determining the EGR rate, amount or flow by using flow sensors
    • 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
    • F02M26/09—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
    • 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
    • F02M26/15—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 in relation to engine exhaust purifying apparatus
    • 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
    • Y02T10/40—Engine management systems

Definitions

  • the invention relates to an exhaust gas recirculation system for an internal combustion engine having an exhaust passage and an intake passage, a turbocharger and a low pressure exhaust gas recirculation passage, which branches off from the exhaust passage downstream of the turbine of the turbocharger and opens into the intake passage upstream of the compressor of the turbocharger.
  • exhaust gas recirculation systems also referred to as dual-loop systems
  • the main portion of the exhaust gas is, in particular in diesel engines, usually recycled via the low-pressure circuit.
  • this strand has only a slight pressure gradient for the return of the exhaust gas, which should be increased by exhaust valves in the continuing exhaust system. Nevertheless, high return rates are difficult to achieve, so that additionally serves a high-pressure circuit for exhaust gas recirculation. This is used in particular after the cold start for faster heating of the internal combustion engine.
  • DE 10 2006 038 863 A1 proposes, upstream of the mouth of the
  • Low pressure exhaust gas recirculation passage as well as upstream of the mouth of the high pressure exhaust gas recirculation passage in the intake passage to arrange a second air mass meter.
  • the exhaust gas flows in the exhaust gas recirculation channels are estimated and regulated.
  • an intake negative pressure sensor, a pressure sensor upstream of the high pressure exhaust gas recirculation passage, an exhaust manifold pressure sensor, a pressure sensor in the low pressure exhaust gas recirculation passage and an air charge temperature sensor in the intake passage are additionally used.
  • a differential equation by means of which then the low pressure exhaust gas backflow is calculated. The result is used to determine the measured air volumes by subtraction and the exhaust gas flow in the high pressure circuit.
  • a first exhaust gas mass flow sensor is arranged in the low pressure exhaust gas return channel. This allows a direct measurement of the exhaust gas mass flow in the low pressure exhaust gas recirculation channel, so that an exact engine control is ensured.
  • this sensor can be used to adjust the exhaust gas recirculation valve.
  • the entire air and Exhaust gas control can be carried out in such an arrangement only by means of the exhaust gas mass flow sensor, an air mass sensor and a pressure and a temperature sensor on the intake manifold.
  • the exhaust gas recirculation rate of the high pressure exhaust gas recirculation channel could be computationally determined, resulting in only minor errors, since the high pressure system is primarily used during the warm-up phase of the engine.
  • a first exhaust gas recirculation valve is disposed in the low pressure exhaust gas recirculation passage and the first
  • Exhaust mass flow sensor disposed upstream of the first exhaust gas recirculation valve. This installation position has the advantage that here is the highest
  • Exhaust gas temperature in the range of low pressure exhaust gas recirculation is present, whereby condensation on the exhaust gas mass flow sensor is avoided. In addition, there is no or a reduced valve-dependent disturbance flow in this area.
  • a first exhaust gas cooler is arranged downstream of the first exhaust gas mass flow sensor, through which the exhaust gas can be recirculated cooled. This reduces the pollutant emissions that occur when the engine is warm.
  • the exhaust gas recirculation system has a high pressure exhaust gas recirculation passage, which branches off the exhaust passage upstream of a turbine of the turbocharger and opens into the intake passage downstream of a compressor of the turbocharger
  • a second exhaust gas mass flow sensor is arranged, through which also the recirculated exhaust gas flow can be measured directly and accurately.
  • this second exhaust gas mass flow sensor can be dispensed with the air mass meter and the air flow via the pressure sensor and the temperature sensor can be determined in the intake manifold.
  • a second exhaust gas recirculation valve is arranged, wherein the second exhaust gas mass flow sensor downstream of the second exhaust gas recirculation valve and a second exhaust gas cooler in
  • High pressure exhaust gas return duct arranged. In this area there is a reduced temperature than in the area in front of the radiator, in which the exhaust gas still has very high temperatures due to its proximity to the combustion chamber. This makes a more accurate measurement possible due to the calibration of these sensors.
  • the first and the second exhaust gas mass flow sensor preferably operate on the principle of hot-film manometry. This has already emerged in air mass sensors as a cost-effective, reliable and accurate system. Such sensors are described for example in DE 10 2005 061 533 B4 of the applicant. They are insensitive to soot and other pollutants in the exhaust.
  • the low-pressure exhaust gas recirculation channel branches off from the exhaust gas duct downstream of a particulate filter and upstream of an exhaust gas flap.
  • Low pressure exhaust gas recirculation channel particles such as soot
  • the arrangement of the exhaust flap ensures a possible increase over the
  • the high-pressure exhaust gas return duct opens into the downstream of a charge air cooler
  • Exhaust gas can be returned in the warm state, without being cooled in the intercooler. This results in a faster heating and thus a
  • An embodiment of an exhaust gas recirculation system according to the invention is shown schematically in the figure with reference to a diesel engine and will be described below.
  • the exhaust gas recirculation system consists of an engine block 2, in which combustion of a fuel-air mixture with supplied exhaust gas takes place in a known manner.
  • an exhaust gas channel 4 initially leads in the form of an exhaust manifold to an exhaust gas outlet 6, in front of which, viewed in the flow direction of the exhaust gas, an exhaust gas flap 8 is arranged.
  • a diesel particulate filter 9 which is also arranged in the exhaust duct 4, branches off from the exhaust duct 4, a low-pressure exhaust gas recirculation passage 10 from.
  • a first exhaust gas recirculation valve 16 and a first exhaust gas cooler 18 are arranged, by means of which the temperature of the exhaust gas and the desired amount of exhaust gas can be adjusted.
  • the low-pressure exhaust gas recirculation channel 10 opens downstream of the exhaust gas cooler 18 downstream of an air inlet, not shown, and upstream of a compressor 20 of the turbocharger 14 in an intake passage 22 of the engine, so here in the range of low pressure before compression of the exhaust gas-air mixture.
  • an exhaust gas mass flow sensor 24 is arranged in the low pressure exhaust gas recirculation channel 10 upstream of the first exhaust gas recirculation valve 16 and upstream of the first exhaust gas cooler 18 in the flow direction of the exhaust gas. This is used to determine the exhaust gas mass flow and is usually connected to an engine control unit, not shown, which contains the data of first exhaust gas mass flow sensor 24 processed and used, for example, for optimized adjustment of the exhaust gas recirculation valve 16.
  • the position in front of the exhaust gas cooler 18 and the exhaust gas recirculation valve 16 reduces the tendency for condensate formation in the area of the exhaust gas mass flow sensor, since the highest temperatures are present in the low pressure exhaust gas recirculation channel 10 upstream of the exhaust gas cooler, the temperature of the exhaust gas being already significantly lower compared to the temperature at the outlet of the engine block 2 ,
  • the arrangement in front of the exhaust gas recirculation valve 16 prevents disturbances of the flow through the exhaust gas recirculation valve 16 from influencing the measurement.
  • the intake passage 22 leads from the mouth of the low-pressure exhaust gas recirculation passage 10 via the compressor 20 of the turbocharger 14 to a charge air cooler 26, in which the compressed air-exhaust gas mixture is cooled to improve the combustion. From here, the intake passage 22 leads to the engine block 2, wherein in this flow path, a branch is arranged, at which a high-pressure exhaust gas return passage 28 opens into the intake passage 22.
  • This high pressure exhaust gas return passage 28 branches off from the exhaust passage 4 upstream of the turbine 12 of the turbocharger 14.
  • a second exhaust gas recirculation valve 30 for controlling the exhaust gas mass flow in the high-pressure exhaust gas recirculation passage 28 and a second exhaust gas cooler 32 for controlling the temperature of the exhaust gas in the high-pressure exhaust gas recirculation passage 28 are arranged.
  • this exhaust gas recirculation channel 28 also contains a second exhaust gas mass flow sensor 34, which, like the first exhaust gas mass flow sensor 24, operates on the principle of hot film manometry.
  • heating resistors of a sensor are heated, whereby the generated heat of these heating resistors is transferred to the flowing medium by convection.
  • the resulting temperature change of the heating resistor or the additional power consumption to obtain the Schuwiderstandstemperatur are a measure of the existing mass flow.
  • This second exhaust gas mass flow sensor 34 is arranged downstream of the exhaust gas cooler 32.
  • the same sensors 24, 34 can be used for both exhaust gas recirculation channels 10, 28.
  • the exhaust gas mass flow sensor 34 the exhaust gas mass flow in the high-pressure exhaust gas return duct 28 can also be measured directly and accurately, and the engine control unit can be made available for controlling this second exhaust gas quantity and the internal combustion engine.
  • exhaust gas either via the low pressure exhaust gas recirculation channel 10 or the high pressure exhaust gas recirculation channel 28 or both channels 10, 28 are returned to the intake passage 22 and thus to the engine block 2.
  • the control of the recirculated exhaust gas mass flows and the intake air mass flow can be done completely via the two exhaust gas mass flow sensors 24, 34 by means of the two exhaust gas recirculation valves 16, 30 and a simple temperature and pressure sensor in the region of the intake manifold, since the intake air quantity from the over the temperature and the pressure sensor measured or calculated total current and a difference with the exhaust gas flows can be calculated in a simple manner.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Analytical Chemistry (AREA)
  • Exhaust-Gas Circulating Devices (AREA)

Abstract

On connaît déjà des systèmes de recirculation des gaz d'échappement pour moteurs à combustion interne, comprenant un canal d'échappement (4) et un canal d'aspiration (22), un turbocompresseur (14) et un canal de recirculation des gaz d'échappement basse pression (10), qui est dérivé du canal d'échappement (4) en aval de la turbine (12) du turbocompresseur (14) et débouche en amont du compresseur (20) du turbocompresseur (14) dans le canal d'aspiration (22). L'invention vise à mettre au point un système de recirculation des gaz d'échappement présentant un réglage précis sans nécessiter la mise en place d'équipements complexes. A cet effet, un premier capteur de débit massique de gaz d'échappement basse pression (24) est agencé dans le canal de recirculation des gaz d'échappement basse pression (10). Ainsi, le débit massique des gaz d'échappement peut être déterminé directement dans la ligne basse pression.
PCT/EP2010/052310 2009-04-24 2010-02-24 Système de recirculation des gaz d'échappement pour un moteur à combustion interne WO2010121852A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009018526.7 2009-04-24
DE102009018526.7A DE102009018526B4 (de) 2009-04-24 2009-04-24 Abgasrückführsystem für einen Verbrennungsmotor

Publications (1)

Publication Number Publication Date
WO2010121852A1 true WO2010121852A1 (fr) 2010-10-28

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ID=42035656

Family Applications (1)

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PCT/EP2010/052310 WO2010121852A1 (fr) 2009-04-24 2010-02-24 Système de recirculation des gaz d'échappement pour un moteur à combustion interne

Country Status (2)

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DE (1) DE102009018526B4 (fr)
WO (1) WO2010121852A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8001779B2 (en) * 2010-03-24 2011-08-23 Ford Global Technologies, Llc Hybrid high-pressure low-pressure EGR system
CN110719993A (zh) * 2017-06-07 2020-01-21 罗伯特·博世有限公司 空气质量测量装置的可信度检验

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5806308A (en) * 1997-07-07 1998-09-15 Southwest Research Institute Exhaust gas recirculation system for simultaneously reducing NOx and particulate matter
JP2006336547A (ja) * 2005-06-02 2006-12-14 Hino Motors Ltd Ｅｇｒ装置
DE102006038863A1 (de) * 2005-08-25 2007-03-08 Ford Global Technologies, LLC, Dearborn System und Verfahren für Regelung und Schätzung von Hochdruck- und Niedrigdruck-Abgasrückführung
US7320220B1 (en) * 2006-12-15 2008-01-22 Caterpillar Inc. EGR valve having integrated motor, controller, and flow meter
WO2008016657A2 (fr) * 2006-08-02 2008-02-07 Borgwarner Inc. Système egr et soupape egr avec un capteur de pression intégré
DE102006054043A1 (de) * 2006-11-16 2008-05-21 Volkswagen Ag Brennkraftmaschine mit Abgasrückführung
WO2008085274A2 (fr) * 2006-12-29 2008-07-17 Caterpillar Inc. Système de recirculation de gaz d'échappement
EP1950406A2 (fr) * 2007-01-26 2008-07-30 Hitachi, Ltd. Système de recyclage de gaz d'échappement
WO2008107247A1 (fr) * 2007-03-05 2008-09-12 Robert Bosch Gmbh Procédé pour déterminer une masse de recyclage de gaz d'échappement
WO2009106344A1 (fr) * 2008-02-29 2009-09-03 Perkins Engines Company Limited Système pour commander un post-traitement d'échappement

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7522994B2 (en) * 2005-12-20 2009-04-21 Caterpillar Inc. Exhaust control system implementing fuel quality detection
DE102005061533B4 (de) 2005-12-22 2007-12-06 Pierburg Gmbh Abgasmassenstromsensor sowie Verfahren zum Betreiben eines Abgasmassenstromsensors
FR2913057B1 (fr) * 2007-02-27 2009-04-10 Renault Sas Systeme de chauffage pour vehicule couple a un systeme de recirculation de gaz d'echappement

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5806308A (en) * 1997-07-07 1998-09-15 Southwest Research Institute Exhaust gas recirculation system for simultaneously reducing NOx and particulate matter
JP2006336547A (ja) * 2005-06-02 2006-12-14 Hino Motors Ltd Ｅｇｒ装置
DE102006038863A1 (de) * 2005-08-25 2007-03-08 Ford Global Technologies, LLC, Dearborn System und Verfahren für Regelung und Schätzung von Hochdruck- und Niedrigdruck-Abgasrückführung
WO2008016657A2 (fr) * 2006-08-02 2008-02-07 Borgwarner Inc. Système egr et soupape egr avec un capteur de pression intégré
DE102006054043A1 (de) * 2006-11-16 2008-05-21 Volkswagen Ag Brennkraftmaschine mit Abgasrückführung
US7320220B1 (en) * 2006-12-15 2008-01-22 Caterpillar Inc. EGR valve having integrated motor, controller, and flow meter
WO2008085274A2 (fr) * 2006-12-29 2008-07-17 Caterpillar Inc. Système de recirculation de gaz d'échappement
EP1950406A2 (fr) * 2007-01-26 2008-07-30 Hitachi, Ltd. Système de recyclage de gaz d'échappement
WO2008107247A1 (fr) * 2007-03-05 2008-09-12 Robert Bosch Gmbh Procédé pour déterminer une masse de recyclage de gaz d'échappement
WO2009106344A1 (fr) * 2008-02-29 2009-09-03 Perkins Engines Company Limited Système pour commander un post-traitement d'échappement

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8001779B2 (en) * 2010-03-24 2011-08-23 Ford Global Technologies, Llc Hybrid high-pressure low-pressure EGR system
CN110719993A (zh) * 2017-06-07 2020-01-21 罗伯特·博世有限公司 空气质量测量装置的可信度检验

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DE102009018526B4 (de) 2015-03-05
DE102009018526A1 (de) 2010-11-11

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