EP0935060A2 - Système de controle de recirculation de gaz d'èchappement - Google Patents

Système de controle de recirculation de gaz d'èchappement Download PDF

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Publication number
EP0935060A2
EP0935060A2 EP19990100558 EP99100558A EP0935060A2 EP 0935060 A2 EP0935060 A2 EP 0935060A2 EP 19990100558 EP19990100558 EP 19990100558 EP 99100558 A EP99100558 A EP 99100558A EP 0935060 A2 EP0935060 A2 EP 0935060A2
Authority
EP
European Patent Office
Prior art keywords
exhaust gas
gas recirculation
temperature
map
operating
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.)
Granted
Application number
EP19990100558
Other languages
German (de)
English (en)
Other versions
EP0935060A3 (fr
EP0935060B1 (fr
Inventor
Bernd Hülsmann
Martin Lutat
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.)
Deutz AG
Original Assignee
Deutz AG
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Filing date
Publication date
Application filed by Deutz AG filed Critical Deutz AG
Publication of EP0935060A2 publication Critical patent/EP0935060A2/fr
Publication of EP0935060A3 publication Critical patent/EP0935060A3/fr
Application granted granted Critical
Publication of EP0935060B1 publication Critical patent/EP0935060B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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
    • F02M26/22—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
    • 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
    • F02M26/42—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories having two or more EGR passages; EGR systems specially adapted for engines having two or more cylinders
    • F02M26/43—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories having two or more EGR passages; EGR systems specially adapted for engines having two or more cylinders in which exhaust from only one cylinder or only a group of cylinders is directed to the intake of the 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
    • F02M26/49—Detecting, diagnosing or indicating an abnormal function of the EGR system
    • 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
    • F02D2041/0067—Determining the EGR temperature
    • 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
    • F02M2026/001—Arrangements; Control features; Details
    • F02M2026/004—EGR valve controlled by a temperature signal or an air/fuel ratio (lambda) signal
    • 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
    • F02M26/45—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

Definitions

  • the invention relates to a method for operating an exhaust gas recirculation device an internal combustion engine, especially an exhaust gas turbocharged, where the exhaust gas from one with the exhaust ducts of the cylinder head of the internal combustion engine connected exhaust manifold in the flow direction in front of the turbine of the exhaust gas turbocharger through an exhaust gas recirculation line with an on Check valve of a charge air line behind the compressor of the Exhaust gas turbocharger can be fed and continues in the exhaust gas recirculation line an exhaust gas recirculation control valve is turned on.
  • the invention relates to a correspondingly trained device.
  • Such an exhaust gas recirculation device is from DE-OS 195 21 573 known.
  • This system is directly connected to the exhaust manifold a check valve is arranged, the output of which in the Exhaust gas recirculation line opens.
  • the exhaust gas recirculation line opens into the charge air line, while still in the exhaust gas recirculation line an exhaust gas recirculation control valve is inserted.
  • the check valve is cooled to increase operational safety and to the Coolant circuit of the internal combustion engine connected. Controlled the exhaust gas recirculation rate is primarily due to that as a flutter valve trained check valve depending on the exhaust gas pressure.
  • the exhaust gas recirculation is still provided for certain Operating states (lower partial load) through the exhaust gas recirculation control valve to prevent.
  • Other control devices are with this System not provided.
  • the invention has for its object a method for operating an exhaust gas recirculation device and a correspondingly designed Exhaust gas recirculation device for an internal combustion engine to provide, which is improved over the prior art and in particular, more precise control of the exhaust gas recirculation rate enables.
  • a control unit in particular an engine control unit that also controls the exhaust gas recirculation control valve, feed.
  • the charge air temperature is recorded, which is used to assess the engine operating condition.
  • the exhaust gas recirculation control valve is dependent a predetermined limit temperature of the exhaust gas can be regulated closable.
  • the exhaust gas recirculation control valve and the check valve are included advantageously arranged so that in the direction of flow of the the exhaust gas recirculation control valve and only then the check valve in the exhaust gas recirculation line are installed. With this circuit arrangement it is then so that critical temperatures are reliable at the check valve can be avoided, although also with the reverse Circuit arrangement reliable protection of the check valve is reached when setting the limit temperature a defined temperature gradient from the check valve to to the exhaust gas recirculation control valve is taken into account.
  • a further development of the invention provides the function of the entire exhaust gas recirculation system and in particular the function of the check valve, the exhaust gas recirculation control valve and possibly an exhaust gas recirculation cooler check and a detected error in an error memory save or display.
  • This monitoring and fault storage is that appropriate measuring sensors anyway are available, practically without additional effort.
  • a further development provides that the storable Correction value in an exhaust gas recirculation correction map Can be saved independently of the exhaust gas recirculation basic map and the exhaust gas recirculation correction map is learnable.
  • a basic map is thus assumed for the control and only if this is not applicable in the special case, becomes independent a correction value is saved by this, with which the Basic map value is corrected.
  • This correction value can be dependent corrected by different circumstances mentioned later and saved (learning ability).
  • This adaptive correction or regulation is terminated immediately if one of the conditions a), b) or c) is no longer met.
  • the water flow through a Exhaust gas recirculation cooler depending on the exhaust gas recirculation temperature controlled.
  • the exhaust gas recirculation temperature during cold start and warm-up as well as during prolonged operation in the low load range with a warm engine, to raise the combustion chamber temperature.
  • the self-igniting internal combustion engine 1 has a total six cylinders 2, with an exhaust manifold on the cylinder head 3 and a charge air line 4 are connected.
  • the Exhaust manifold 3 has two branches 5a, 5b, with the branches 6a, 6b to those embedded in the cylinder head and each cylinder 2 associated exhaust ports are connected.
  • the two branches 5a, 5b open out via corresponding connecting lines into a common turbine chamber 7 of an exhaust gas turbocharger 8th.
  • the compressor 10 sucks the one to be supplied to the internal combustion engine 1 Combustion air from the environment via a suction filter 11 and guides the compressed air via a charge air cooler 12 of the charge air line 4 to.
  • an exhaust pipe opens into the one before exhaust muffler 13, from which the exhaust gas into the Environment or other cleaning facilities flows.
  • the exhaust gas recirculation line 14 initially has an exhaust gas recooler 16 and in its further course, shortly before entering the charge air line 4, an exhaust gas recirculation control valve 17 and a check valve 18 on.
  • a temperature sensor that measures the exhaust gas temperature is in the embodiment directly before Exhaust gas recirculation control valve 17 inserted into the exhaust gas recirculation line 14, can also in the exhaust gas recirculation control valve 17, the further Connection to the check valve 18 or the check valve 18 be integrated.
  • the exhaust gas recirculation control valve 17 is operated by a control electronics 15 depending on engine data including the measured values of the thermocouple 19 controlled while the Check valve 18 with its check valves for cooling them used in the charge air line 4 in the area of the entry of the charge air is.
  • a charge air target temperature map 20 is read out from a charge air target temperature map 20 and fed to a test device 21. Furthermore, the test device 21 is supplied with further variables 21a, for example the target exhaust gas recirculation temperature and the actual exhaust gas recirculation temperature, for evaluation. This determines whether the actual charge air temperature corresponds to the charge air target temperature, taking into account a tolerance range, after reaching the operating temperature and if the engine is in a steady operating state (claim 4). If this is not the case, the exhaust gas recirculation system cannot be used due to the presence of an error and switches 22 and 23 are switched to the positions shown.
  • variables 21a for example the target exhaust gas recirculation temperature and the actual exhaust gas recirculation temperature
  • an opening value for the exhaust gas recirculation control valve 17 is read out again as a function of the current engine speed n and the current injection quantity m E from an exhaust gas recirculation basic map 24 and, if appropriate, overlaid with fixed engine-specific corrections 25.
  • the exhaust gas recirculation control valve 17 is then only activated with this corrected opening value 25a. So this is a basic control that is always possible.
  • the (possibly) stored value 28a is read from an exhaust gas recirculation correction map 28 as a function of the current engine speed n and the current injection quantity m E and added to the corrected opening value 25a in front of the switch 22.
  • a comparator 29 it is determined in a comparator 29 whether the difference 26a is for a time T rule is within a temperature window T diff. If this is the case, the switch 30 is flipped to the position not shown, so that a new value, which is the difference between the corrected opening value 25a and the controller value 27a, is fed to the exhaust gas recirculation correction map 28 and stored.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust-Gas Circulating Devices (AREA)
EP19990100558 1998-02-07 1999-01-12 Système de controle de recirculation de gaz d'èchappement Expired - Lifetime EP0935060B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19804968 1998-02-07
DE1998104968 DE19804968A1 (de) 1998-02-07 1998-02-07 Kontrolle eines Abgasrückführungssystems

Publications (3)

Publication Number Publication Date
EP0935060A2 true EP0935060A2 (fr) 1999-08-11
EP0935060A3 EP0935060A3 (fr) 2000-06-07
EP0935060B1 EP0935060B1 (fr) 2002-07-03

Family

ID=7856997

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19990100558 Expired - Lifetime EP0935060B1 (fr) 1998-02-07 1999-01-12 Système de controle de recirculation de gaz d'èchappement

Country Status (3)

Country Link
EP (1) EP0935060B1 (fr)
AT (1) ATE220175T1 (fr)
DE (2) DE19804968A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2888883A1 (fr) * 2005-07-25 2007-01-26 Valeo Sys Controle Moteur Sas Procede de protection d'une vanne de recirculation de gaz d'echappement, et dispositif de mise en oeuvre
EP2017450A1 (fr) * 2007-07-17 2009-01-21 Renault S.A.S. Système de contrôle d'un moteur à combustion interne avec procédé de protection thermique de la vanne de regulation de débit des gaz d'échappement recyclés
DE102010002605A1 (de) 2010-03-05 2011-09-08 Ford Global Technologies, Llc Verfahren zur Verkürzung der Warmlaufphase mittels Wärmerückgewinnung aus rückgeführten Abgasen
EP2472092A1 (fr) * 2010-10-25 2012-07-04 Toyota Jidosha Kabushiki Kaisha Dispositif de detection d'anomalie pour systeme de recirculation de gaz d'echappement
FR3025838A1 (fr) * 2014-09-15 2016-03-18 Renault Sas Procede de regulation de la consommation en air d'un moteur a combustion interne en vue de limiter une temperature de gaz brules recycles

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19521573A1 (de) 1995-06-14 1996-12-19 Man Nutzfahrzeuge Ag Abgasrückführung an einer aufgeladenen Brennkraftmaschine

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6185562A (ja) * 1984-10-02 1986-05-01 Suzuki Motor Co Ltd 排気ガス環流装置
DE3720942C2 (de) * 1986-07-08 1995-03-16 Volkswagen Ag Regelsystem für eine aufgeladene Brennkraftmaschine
JPH0799123B2 (ja) * 1988-05-19 1995-10-25 三菱電機株式会社 Ｅｇｒシステムの異常検出装置
DE4121071C2 (de) * 1991-06-26 2001-11-08 Bosch Gmbh Robert Abgasrückführungssystem bei einer Brennkraftmaschine
US5239971A (en) * 1991-08-03 1993-08-31 Mitsubishi Denki K.K. Trouble diagnosis device for exhaust gas recirculation system
US5303168A (en) * 1991-10-31 1994-04-12 Ford Motor Company Engine operation to estimate and control exhaust catalytic converter temperature
JPH0835449A (ja) * 1994-07-25 1996-02-06 Mitsubishi Electric Corp 排気ガス還流制御装置の故障検出装置
JP3460338B2 (ja) * 1994-10-31 2003-10-27 株式会社デンソー 内燃機関の排気還流制御装置

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19521573A1 (de) 1995-06-14 1996-12-19 Man Nutzfahrzeuge Ag Abgasrückführung an einer aufgeladenen Brennkraftmaschine

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2888883A1 (fr) * 2005-07-25 2007-01-26 Valeo Sys Controle Moteur Sas Procede de protection d'une vanne de recirculation de gaz d'echappement, et dispositif de mise en oeuvre
EP1748171A1 (fr) * 2005-07-25 2007-01-31 Valeo Systèmes de Contrôle Moteur Procédé de protection d'une vanne de recirculation de gaz d'échappement et dispositif de mise en oeuvre
EP2017450A1 (fr) * 2007-07-17 2009-01-21 Renault S.A.S. Système de contrôle d'un moteur à combustion interne avec procédé de protection thermique de la vanne de regulation de débit des gaz d'échappement recyclés
FR2919023A1 (fr) * 2007-07-17 2009-01-23 Renault Sas Systeme de controle d'un moteur a combustion interne avec recirculation partielle des gaz d'echappement et procede de protection thermique de la vanne de regulation de debit des gaz d'echappement recycles
DE102010002605A1 (de) 2010-03-05 2011-09-08 Ford Global Technologies, Llc Verfahren zur Verkürzung der Warmlaufphase mittels Wärmerückgewinnung aus rückgeführten Abgasen
DE102010002605B4 (de) * 2010-03-05 2013-12-12 Ford Global Technologies, Llc Verfahren zur Verkürzung der Warmlaufphase mittels Wärmerückgewinnung aus rückgeführten Abgasen
EP2472092A1 (fr) * 2010-10-25 2012-07-04 Toyota Jidosha Kabushiki Kaisha Dispositif de detection d'anomalie pour systeme de recirculation de gaz d'echappement
EP2472092A4 (fr) * 2010-10-25 2015-01-28 Toyota Motor Co Ltd Dispositif de detection d'anomalie pour systeme de recirculation de gaz d'echappement
US9212628B2 (en) 2010-10-25 2015-12-15 Toyota Jidosha Kabushiki Kaisha Abnormality detection device for exhaust gas recirculation apparatus
FR3025838A1 (fr) * 2014-09-15 2016-03-18 Renault Sas Procede de regulation de la consommation en air d'un moteur a combustion interne en vue de limiter une temperature de gaz brules recycles
WO2016042250A1 (fr) * 2014-09-15 2016-03-24 Renault S.A.S. Procédé de régulation de la consommation en air d'un moteur à combustion interne en vue de limiter une température de gaz brûlés recyclés

Also Published As

Publication number Publication date
DE59901886D1 (de) 2002-08-08
EP0935060A3 (fr) 2000-06-07
ATE220175T1 (de) 2002-07-15
DE19804968A1 (de) 1999-08-12
EP0935060B1 (fr) 2002-07-03

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