EP0837237A3 - Exhaust gas recirculation system for internal combustion engine and method for detecting an abnormal condition thereof - Google Patents

Exhaust gas recirculation system for internal combustion engine and method for detecting an abnormal condition thereof Download PDF

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Publication number
EP0837237A3
EP0837237A3 EP97117882A EP97117882A EP0837237A3 EP 0837237 A3 EP0837237 A3 EP 0837237A3 EP 97117882 A EP97117882 A EP 97117882A EP 97117882 A EP97117882 A EP 97117882A EP 0837237 A3 EP0837237 A3 EP 0837237A3
Authority
EP
European Patent Office
Prior art keywords
control valve
egr control
egr
exhaust gas
aperture
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Withdrawn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
EP97117882A
Other languages
German (de)
French (fr)
Other versions
EP0837237A2 (en
Inventor
Takayuki Demura
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.)
Toyota Motor Corp
Original Assignee
Toyota Motor Corp
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 Toyota Motor Corp filed Critical Toyota Motor Corp
Publication of EP0837237A2 publication Critical patent/EP0837237A2/en
Publication of EP0837237A3 publication Critical patent/EP0837237A3/en
Withdrawn legal-status Critical Current

Links

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
    • F02M26/52—Systems for actuating EGR valves
    • F02M26/55—Systems for actuating EGR valves using vacuum actuators
    • F02M26/56—Systems for actuating EGR valves using vacuum actuators having pressure modulation valves
    • F02M26/57—Systems for actuating EGR valves using vacuum actuators having pressure modulation valves using electronic means, e.g. electromagnetic 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
    • F02M26/45—Sensors specially adapted for EGR systems
    • F02M26/48—EGR valve position sensors
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Analytical Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Exhaust-Gas Circulating Devices (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)

Abstract

An exhaust gas recirculation (EGR) system for an internal combustion engine is capable of correctly determining whether or not an EGR control valve (9) is sound, irrespective of variations in the characteristics of a unit for setting a negative pressure applied to the EGR control valve or the aging of the unit.
The EGR system has the EGR control valve (9) disposed in a recirculation path (8) that connects an exhaust path (2) to an intake path (3) of the engine (1), for controlling the flow rate of exhaust gas recirculated through the recirculation path (8), an aperture detector for detecting a real aperture of the EGR control valve (9) at proper intervals, a driver for driving the EGR control valve (9) in a way to provide a target aperture that is set at proper intervals according to operating conditions of the engine (1), and a diagnostic unit that determines that the EGR system including the EGR control valve (9) is abnormal if real apertures detected by the aperture detector do not follow corresponding target apertures after the target apertures show a change of predetermined magnitude.
EP97117882A 1996-10-16 1997-10-15 Exhaust gas recirculation system for internal combustion engine and method for detecting an abnormal condition thereof Withdrawn EP0837237A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP273402/96 1996-10-16
JP8273402A JPH10122058A (en) 1996-10-16 1996-10-16 Exhaust gas recirculating device for internal combustion engine

Publications (2)

Publication Number Publication Date
EP0837237A2 EP0837237A2 (en) 1998-04-22
EP0837237A3 true EP0837237A3 (en) 1999-04-28

Family

ID=17527401

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97117882A Withdrawn EP0837237A3 (en) 1996-10-16 1997-10-15 Exhaust gas recirculation system for internal combustion engine and method for detecting an abnormal condition thereof

Country Status (2)

Country Link
EP (1) EP0837237A3 (en)
JP (1) JPH10122058A (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3535077B2 (en) * 2000-06-19 2004-06-07 本田技研工業株式会社 Control device for internal combustion engine
FR2836517B1 (en) * 2002-02-25 2004-05-28 Renault METHOD AND DEVICE FOR DIAGNOSING THE OPERATING STATE OF AN EXHAUST GAS RECIRCULATION VALVE OF AN INTERNAL COMBUSTION ENGINE
JP3846381B2 (en) * 2002-08-23 2006-11-15 トヨタ自動車株式会社 Abnormality diagnosis device for exhaust gas recirculation system
DE102008008697A1 (en) * 2008-02-11 2009-08-27 Behr Gmbh & Co. Kg Actuator for a bypass control device of a bypass in a heat exchanger, heat exchanger or assembly with one or more heat exchangers, bypass system, vehicle diagnostic system, exhaust gas recirculation system, charge air supply system and use of the heat exchanger or the assembly
JP5538712B2 (en) * 2008-12-11 2014-07-02 日野自動車株式会社 EGR device for internal combustion engine
JP5393506B2 (en) 2010-01-27 2014-01-22 三菱重工業株式会社 Control device and control method for control valve used in engine intake system
JP5473849B2 (en) * 2010-09-21 2014-04-16 三菱重工業株式会社 Exhaust gas recirculation device for internal combustion engine
GB2570335B (en) 2018-01-22 2020-03-11 Ford Global Tech Llc An exhaust gas recirculation valve control method
WO2019214821A1 (en) 2018-05-09 2019-11-14 Toyota Motor Europe An egr flow determination method, an egr rate error determination method, a control method for an internal combustion engine, and an internal combustion engine

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59185857A (en) * 1983-04-05 1984-10-22 Honda Motor Co Ltd Exhaust feedback amount control method for internal- combustion engine
US4541398A (en) * 1983-06-30 1985-09-17 Honda Giken Kogyo Kabushiki Kaisha Method of controlling an exhaust gas recirculating valve in an internal combustion engine
US4665882A (en) * 1984-09-13 1987-05-19 Honda Giken Kogyo K.K. Method of controlling an exhaust gas recirculating valve in an internal combustion engine
US5113835A (en) * 1990-08-21 1992-05-19 Honda Giken Kogyo K.K. (Honda Motor Co., Ltd. In English) Method of controlling exhaust gas recirculation for an internal combustion engine
EP0812983A2 (en) * 1996-06-12 1997-12-17 Toyota Jidosha Kabushiki Kaisha A malfunction determining apparatus of an exhaust gas recirculation system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59185857A (en) * 1983-04-05 1984-10-22 Honda Motor Co Ltd Exhaust feedback amount control method for internal- combustion engine
US4541398A (en) * 1983-06-30 1985-09-17 Honda Giken Kogyo Kabushiki Kaisha Method of controlling an exhaust gas recirculating valve in an internal combustion engine
US4665882A (en) * 1984-09-13 1987-05-19 Honda Giken Kogyo K.K. Method of controlling an exhaust gas recirculating valve in an internal combustion engine
US5113835A (en) * 1990-08-21 1992-05-19 Honda Giken Kogyo K.K. (Honda Motor Co., Ltd. In English) Method of controlling exhaust gas recirculation for an internal combustion engine
EP0812983A2 (en) * 1996-06-12 1997-12-17 Toyota Jidosha Kabushiki Kaisha A malfunction determining apparatus of an exhaust gas recirculation system

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 009, no. 046 (M - 360) 27 February 1985 (1985-02-27) *

Also Published As

Publication number Publication date
EP0837237A2 (en) 1998-04-22
JPH10122058A (en) 1998-05-12

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