EP0878619A2 - Dispositif de recirculation de gaz d'échappement pour moteur de véhicule - Google Patents

Dispositif de recirculation de gaz d'échappement pour moteur de véhicule Download PDF

Info

Publication number
EP0878619A2
EP0878619A2 EP98108664A EP98108664A EP0878619A2 EP 0878619 A2 EP0878619 A2 EP 0878619A2 EP 98108664 A EP98108664 A EP 98108664A EP 98108664 A EP98108664 A EP 98108664A EP 0878619 A2 EP0878619 A2 EP 0878619A2
Authority
EP
European Patent Office
Prior art keywords
exhaust gas
gas recirculation
mixing chamber
valve
housing
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Withdrawn
Application number
EP98108664A
Other languages
German (de)
English (en)
Other versions
EP0878619A3 (fr
Inventor
Hans Klein
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hella GmbH and Co KGaA
Original Assignee
Hella KGaA Huek and Co
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 Hella KGaA Huek and Co filed Critical Hella KGaA Huek and Co
Publication of EP0878619A2 publication Critical patent/EP0878619A2/fr
Publication of EP0878619A3 publication Critical patent/EP0878619A3/fr
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D21/00—Controlling engines characterised by their being supplied with non-airborne oxygen or other non-fuel gas
    • F02D21/06—Controlling engines characterised by their being supplied with non-airborne oxygen or other non-fuel gas peculiar to engines having other non-fuel gas added to combustion air
    • F02D21/08—Controlling engines characterised by their being supplied with non-airborne oxygen or other non-fuel gas peculiar to engines having other non-fuel gas added to combustion air the other gas being the exhaust gas of engine
    • 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
    • F02M26/17—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the intake system
    • F02M26/19—Means for improving the mixing of air and recirculated exhaust gases, e.g. venturis or multiple openings to the intake 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
    • F02M26/45—Sensors specially adapted for EGR systems
    • F02M26/46—Sensors specially adapted for EGR systems for determining the characteristics of gases, e.g. composition
    • 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
    • F02M26/17—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the intake system
    • F02M26/21—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the intake system with EGR valves located at or near the connection to the intake system

Definitions

  • the invention relates to a device for exhaust gas recirculation for a Internal combustion engine in a motor vehicle, with an intake manifold, a Exhaust pipe and an exhaust gas recirculation line, with a controllable Exhaust gas recirculation valve, with a gas concentration sensor, which is directly in the section of the intake pipe (intake pipe) connected to the internal combustion engine is arranged, and with a control unit, which the signal of Evaluates the gas concentration sensor and controls the exhaust gas recirculation valve.
  • a control device From the sensor output signal corresponding to an oxygen concentration is set by a control device by means of a map Exhaust gas recirculation component determined and compared with a target exhaust gas recirculation component, also via maps using the parameters engine speed and engine load is determined, a when a predetermined deviation is exceeded abnormal condition is signaled.
  • the control of the exhaust gas recirculation valve also takes place depending on the operating parameters of the internal combustion engine a pneumatic converter actuated by vacuum.
  • a disadvantage of this control device is that the determination of the returned Exhaust gas proportion (exhaust gas recirculation rate) not directly, but only via an indirect one Determination using maps is possible.
  • the desired compact structure is thus a mixing chamber training housing and by using two small executable gas concentration sensors achieved in the intake manifold and Exhaust gas recirculation line, preferably in the immediate area of the Mixing chamber, or even in the mixing chamber, are arranged.
  • the two gas concentration sensors that measure the proportion of one or more Quantitatively record exhaust gas components also make it possible advantageously a simple determination of the exhaust gas recirculation rate without the use of a map is required for this.
  • control unit in or on the housing Arrange the mixing chamber so that the electrical connections between the Gas concentration sensors and the control unit in a particularly simple manner can be produced.
  • the actuating device in the intake pipe arranged pressure control valve for diesel-powered internal combustion engines can be used together with the housing the mixing chamber, form a structural unit and are electrical and mechanical be pre-assembled. It is also advantageous for this if the mixing chamber Has nozzle that with the intake manifold, the intake manifold and the Exhaust gas recirculation line can be connected, and so is already a complete one pre-assembled exhaust gas recirculation module.
  • the device consists of the components listed below:
  • the device operates as follows: The internal combustion engine (37) sucks in air unthrottled, via air filter (31), straightening section (32), air mass meter (33), flap nozzle (34) (pressure control flap not activated), mixing chamber (35) and suction pipe (36).
  • the engine runs with one certain speed, which is detected by the speed sensor (39) and sent to the Control unit (45) is reported. That with the engine combustion Exhaust gas produced is released into the environment by the exhaust system (38) pushed out. A certain part of the exhaust gas is passed through the return line (43) removed and via the metering exhaust gas recirculation valve (42) Mixing chamber (35) supplied.
  • the exhaust gas recirculation valve (42) is by means of Vacuum activated, which is generated by the vacuum pump (40) and by the electropneumatic pressure transducer (41a) is modulated.
  • the modulation is done by the control unit (45) with the electropneumatic pressure transducer (41a) a pulse width modulated signal, due to which the electropneumatic pressure transducer (41a) occupies a certain position, so that the vacuum in the line to the exhaust gas recirculation valve (42) a desired Order of magnitude reached.
  • the electropneumatic Pressure converter (41b) activates the pressure control flap (34), but only then when the exhaust gas recirculation valve (42) is already fully open and the driving Pressure difference between exhaust system (38) and mixing chamber (35) for the return rate to be set is not sufficient. Then about partial closure the pressure control flap (34) the negative pressure in the mixing chamber (35), and thus also the driving pressure difference increases.
  • the electropneumatic Pressure converters (41a, 41b) are used by the control unit (45) on the basis of the following Information controlled: The operating point is based on the speed signal the speed sensor (39) and the signal from the accelerator pedal sensor (44) are known.
  • the signal from the air mass meter (33) is used to measure the actual air mass compared to the map-programmed setpoint and thus to the actual Mass of recirculated exhaust gas and closed this if necessary Corrected opening or closing of the exhaust gas recirculation valve (42).
  • the device consists of a mixing chamber (7) Housing (4) into which the air filter, not shown, is connected Intake pipe (1) and the intake pipe (11) connected to the internal combustion engine as well as the exhaust gas recirculation line connected to the exhaust system.
  • the interior of the mixing chamber (7) should preferably be designed such that there is as homogeneous a gas mixture formation as possible.
  • the housing of the mixing chamber (7) is directly connected to the suction pipe (1) (e.g. B. flanged) or even integrally forms a section with the intake manifold (1) off.
  • the exhaust gas recirculation valve (5) is arranged in or on the mixing chamber (7), as well as its actuator (6) by a electromotive or electromagnetic actuator is realized. If the Application of the exhaust gas recirculation device to a diesel powered Internal combustion engine is provided, as is in the intake pipe (1) Throttle valve designed pressure control valve (2) arranged, which also an electromotive or electromagnetically operated actuator (3).
  • Control device (9) arranged which the actuating devices (6, 3) for Exhaust gas recirculation valve (5) and the pressure control flap (2) controls.
  • Input side the control unit (9) receives signal voltages of two for this purpose Gas concentration sensors (8a, 8b) in the intake manifold (11) and in the Exhaust gas recirculation line (10) are arranged.
  • the gas concentration sensors (8a, 8b) can be made very small and also to be arranged in or in the immediate vicinity of the mixing chamber (7), so that the sensors described so far (gas concentration sensors (8a, 8b)) and actuators (exhaust gas recirculation valve (5), pressure control flap (2), Actuators (6, 3)) together with the housing (4) Mixing chamber (7) can be executed as a structural unit.
  • the connecting piece is the entire unit shown in FIG. 1 advantageously, including the electrical connection between Control unit (9) and the sensors and actuators can be preassembled.
  • the control unit (9) receives an additional signal, for example pulse width modulated signal (12) of an engine control unit, not shown supplied, which the required to adjust the exhaust gas recirculation rate Coded operating parameters of the motor vehicle.
  • an additional signal for example pulse width modulated signal (12) of an engine control unit, not shown supplied, which the required to adjust the exhaust gas recirculation rate Coded operating parameters of the motor vehicle.
  • the device shown in Figure 1 can also be spark-ignited Bring internal combustion engines to use. Because one Internal combustion engine that has a throttle valve can be on the Pressure control valve (2) can be dispensed with.
  • the information about the Throttle valve position is also in the pulse width modulated in this case Signal (12) from the engine control unit included.
  • Figure 2 shows the schematic representation of the engine fed and the Gas flows carried away from the engine.
  • the ratio can be according to the last listed equation determine and evaluate.
  • Such gas sensors are available, both those that have only one Sensing the exhaust gas component, for example nitrogen oxides (NO) or Hydrocarbons (HC), as well as those that are several different Exhaust components are able to measure.
  • NO nitrogen oxides
  • HC Hydrocarbons

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Analytical Chemistry (AREA)
  • Exhaust-Gas Circulating Devices (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)
EP98108664A 1997-05-16 1998-05-13 Dispositif de recirculation de gaz d'échappement pour moteur de véhicule Withdrawn EP0878619A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19720642A DE19720642A1 (de) 1997-05-16 1997-05-16 Vorrichtung zur Abgasrückführung für eine Brennkraftmaschine in einem Kraftfahrzeug
DE19720642 1997-05-16

Publications (2)

Publication Number Publication Date
EP0878619A2 true EP0878619A2 (fr) 1998-11-18
EP0878619A3 EP0878619A3 (fr) 1999-06-30

Family

ID=7829710

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98108664A Withdrawn EP0878619A3 (fr) 1997-05-16 1998-05-13 Dispositif de recirculation de gaz d'échappement pour moteur de véhicule

Country Status (2)

Country Link
EP (1) EP0878619A3 (fr)
DE (1) DE19720642A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002088534A1 (fr) * 2001-04-27 2002-11-07 Edwards Systems Technology, Incorporated Detecteur de dioxyde de carbone destine au controle de la recirculation des gaz d'echappement dans des moteurs diesel
DE102009053462A1 (de) * 2009-11-16 2011-05-19 Volkswagen Ag Verfahren zum Betreiben einer selbstzündenden Brennkraftmaschine

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8210158B2 (en) * 2009-12-18 2012-07-03 GM Global Technology Operations LLC EGR control in HCCI engines

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3703091A1 (de) 1986-02-14 1988-08-11 Mitsubishi Electric Corp Steuervorrichtung fuer die rueckgefuehrte abgasmenge in einem verbrennungsmotor

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5855345B2 (ja) * 1976-11-30 1983-12-09 日産自動車株式会社 排気還流制御装置
DE2911209A1 (de) * 1979-03-22 1980-10-02 Bosch Gmbh Robert Einrichtung zum regeln der abgasrueckfuehrrate bei einer brennkraftmaschine
JPS56104144A (en) * 1980-01-18 1981-08-19 Nissan Motor Co Ltd Exhasut reflux control
US5152273A (en) * 1990-11-07 1992-10-06 Mitsubishi Denki Kabushiki Kaisha Exhaust gas recirculation control device and its failure diagnosis device
JPH0518324A (ja) * 1991-07-12 1993-01-26 Mitsubishi Electric Corp 機関の排気ガス再循環制御装置

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3703091A1 (de) 1986-02-14 1988-08-11 Mitsubishi Electric Corp Steuervorrichtung fuer die rueckgefuehrte abgasmenge in einem verbrennungsmotor

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002088534A1 (fr) * 2001-04-27 2002-11-07 Edwards Systems Technology, Incorporated Detecteur de dioxyde de carbone destine au controle de la recirculation des gaz d'echappement dans des moteurs diesel
DE102009053462A1 (de) * 2009-11-16 2011-05-19 Volkswagen Ag Verfahren zum Betreiben einer selbstzündenden Brennkraftmaschine
DE102009053462B4 (de) 2009-11-16 2022-03-17 Volkswagen Ag Verfahren zum Betreiben einer selbstzündenden Brennkraftmaschine

Also Published As

Publication number Publication date
EP0878619A3 (fr) 1999-06-30
DE19720642A1 (de) 1998-11-19

Similar Documents

Publication Publication Date Title
EP1247016B2 (fr) Procede et dispositif pour commander un moteur a combustion interne pourvu d'un systeme d'alimentation en air
EP0896139B1 (fr) Procédé de fonctionnement d'un moteur à combustion
DE69333934T2 (de) Luftansaugvorrichtung einer Brennkraftmaschine
DE3424088C2 (fr)
DE4415377B4 (de) Kraftstoffsteuersystem für mit gasförmigem Kraftstoff betriebene Verbrennungsmotoren
DE2739674A1 (de) Brennstoffregelvorrichtung fuer brennkraftmaschinen
DE102007045623A1 (de) Verfahren und Vorrichtung zum Verbessern einer Abgasrückführung einer Verbrennungskraftmaschine
DE19738337A1 (de) Hitzdraht-Luftmassenmesser
EP1087114A1 (fr) Méthode pour la commande de la régénération d'un filtre à particules
WO2007101566A1 (fr) Turbosoufflante a gaz d'echappement pour un moteur a combustion interne
WO2001077509A1 (fr) Procede et dispositif de commande d'un moteur a combustion interne
EP0761955A2 (fr) Méthode de commande d'un moeteur à combustion interne suralimenté
EP1091106A2 (fr) Méthode d'évaluation de la contre-pression des gaz d'échappement au niveau de la turbine
DE10256241A1 (de) Verfahren und Vorrichtung zur Steuerung einer eine Abgasrückführung aufweisenden Brennkraftmaschine
EP1999352A1 (fr) Procédé et dispositif conçus pour réguler ou commander un compresseur d'un turbocompresseur à gaz d'échappement
DE102005044266A1 (de) Verfahren zum Betreiben einer Brennkraftmaschine und Brennkraftmaschine
DE19855601C2 (de) Steuereinrichtung für Direkteinspritzungsmotor
DE4013849A1 (de) Elektronische einspritzanlage fuer ottomotoren
EP0878619A2 (fr) Dispositif de recirculation de gaz d'échappement pour moteur de véhicule
DE10028886A1 (de) Verfahren und Vorrichtung zum Überwachen des Betriebs eines Verbrennungsmotors
DE3614115C2 (fr)
DE10018308B4 (de) Verfahren zur Regelung des Anteils der einer Brennkraftmaschine rückgeführten Abgasmenge
DE19525815B4 (de) Verfahren zur Erfassung des Lastsignals einer Brennkraftmaschine
DE19961292C2 (de) Verfahren und Vorrichtung zur Steuerung einer Brennkraftmaschine
DE19849272B4 (de) Verfahren zur Diagnose eines Abgasrückführungs(AGR)-Systems eines Verbrennungsprozesses

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): DE ES FR GB IT

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

17P Request for examination filed

Effective date: 19991115

AKX Designation fees paid

Free format text: DE ES FR GB IT

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

18D Application deemed to be withdrawn

Effective date: 20011201