JPS6453042A - Air-fuel ratio controller for internal combustion engine - Google Patents

Air-fuel ratio controller for internal combustion engine

Info

Publication number
JPS6453042A
JPS6453042A JP20969887A JP20969887A JPS6453042A JP S6453042 A JPS6453042 A JP S6453042A JP 20969887 A JP20969887 A JP 20969887A JP 20969887 A JP20969887 A JP 20969887A JP S6453042 A JPS6453042 A JP S6453042A
Authority
JP
Japan
Prior art keywords
fuel ratio
air
amplitude
sensor
forcibly
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.)
Pending
Application number
JP20969887A
Other languages
Japanese (ja)
Inventor
Mitsuhiro Miyake
Osamu Horie
Akira Takahashi
Toru Hashimoto
Yasuyuki Makikawa
Minoru Nishida
Hideaki Katashiba
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.)
Mitsubishi Electric Corp
Mitsubishi Motors Corp
Original Assignee
Mitsubishi Electric Corp
Mitsubishi Motors 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 Mitsubishi Electric Corp, Mitsubishi Motors Corp filed Critical Mitsubishi Electric Corp
Priority to JP20969887A priority Critical patent/JPS6453042A/en
Publication of JPS6453042A publication Critical patent/JPS6453042A/en
Pending legal-status Critical Current

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
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/14—Introducing closed-loop corrections
    • F02D41/1438—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor
    • F02D41/1444—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases
    • F02D41/1454—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases the characteristics being an oxygen content or concentration or the air-fuel ratio
    • F02D41/1456—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases the characteristics being an oxygen content or concentration or the air-fuel ratio with sensor output signal being linear or quasi-linear with the concentration of oxygen

Landscapes

  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)

Abstract

PURPOSE:To display an oxygen storage effect as well as to maintain a degree of emission control efficiency to the maximum by compensating a period, amplitude and a mean air-fuel ratio at the time of forcibly vibrating an air-fuel ratio on the basis of output of an oxygen sensor installed in the inner part or at the downstream of a catalytic converter. CONSTITUTION:A detected value of a linear type oxygen sensor 18 in stalled at the downstream of a catalytic converter is inputted into an electronic control unit ECU together with those out of an air flow sensor 11, a crank angle sensor, a throttle sensor 14, etc. The electronic control unit ECU sets a mean air-fuel ratio amplitude and a period at the time of forcibly vibrating an air-fuel ratio so as to cause output median, amplitude and frequency of the linear type oxygen sensor 18 to become the specified range, and it forcibly varies a control signal to a fuel injection valve 8.
JP20969887A 1987-08-24 1987-08-24 Air-fuel ratio controller for internal combustion engine Pending JPS6453042A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP20969887A JPS6453042A (en) 1987-08-24 1987-08-24 Air-fuel ratio controller for internal combustion engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP20969887A JPS6453042A (en) 1987-08-24 1987-08-24 Air-fuel ratio controller for internal combustion engine

Publications (1)

Publication Number Publication Date
JPS6453042A true JPS6453042A (en) 1989-03-01

Family

ID=16577151

Family Applications (1)

Application Number Title Priority Date Filing Date
JP20969887A Pending JPS6453042A (en) 1987-08-24 1987-08-24 Air-fuel ratio controller for internal combustion engine

Country Status (1)

Country Link
JP (1) JPS6453042A (en)

Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6466441A (en) * 1987-09-05 1989-03-13 Toyota Motor Corp Air-fuel ratio control device of internal combustion engine
US5052177A (en) * 1989-03-03 1991-10-01 Toyota Jidosha Kabushiki Kaisha Air-fuel ratio feedback control system having single air-fuel ratio sensor downstream of or within three-way catalyst converter
US5070693A (en) * 1989-11-21 1991-12-10 Toyota Jidosha Kabushiki Kaisha Air-fuel ratio feedback control system having single air-fuel ratio sensor downstream of or within three-way catalyst converter
US5070692A (en) * 1989-12-29 1991-12-10 Toyota Jidosha Kabushiki Kaisha Air-fuel ratio feedback control system having single air-fuel ratio sensor downstream of or within three-way catalyst converter
US5127225A (en) * 1990-07-30 1992-07-07 Toyota Jidosha Kabushiki Kaisha Air-fuel ratio feedback control system having a single air-fuel ratio sensor downstream of a three-way catalyst converter
US5172320A (en) * 1989-03-03 1992-12-15 Toyota Jidosha Kabushiki Kaisha Air-fuel ratio feedback control system having single air-fuel ratio sensor downstream of or within three-way catalyst converter
JPH06146963A (en) * 1992-11-10 1994-05-27 Unisia Jecs Corp Air/fuel ratio feedback controlling device of internal combustion engine
JPH10131788A (en) * 1996-10-29 1998-05-19 Honda Motor Co Ltd Air-fuel ratio control device for internal combustion engine
US6308515B1 (en) 2000-03-17 2001-10-30 Ford Global Technologies, Inc. Method and apparatus for accessing ability of lean NOx trap to store exhaust gas constituent
US6308697B1 (en) 2000-03-17 2001-10-30 Ford Global Technologies, Inc. Method for improved air-fuel ratio control in engines
US6327847B1 (en) 2000-03-17 2001-12-11 Ford Global Technologies, Inc. Method for improved performance of a vehicle
US6370868B1 (en) 2000-04-04 2002-04-16 Ford Global Technologies, Inc. Method and system for purge cycle management of a lean NOx trap
US6374597B1 (en) 2000-03-17 2002-04-23 Ford Global Technologies, Inc. Method and apparatus for accessing ability of lean NOx trap to store exhaust gas constituent
US6389803B1 (en) 2000-08-02 2002-05-21 Ford Global Technologies, Inc. Emission control for improved vehicle performance
US6427437B1 (en) 2000-03-17 2002-08-06 Ford Global Technologies, Inc. Method for improved performance of an engine emission control system
US6434930B1 (en) 2000-03-17 2002-08-20 Ford Global Technologies, Inc. Method and apparatus for controlling lean operation of an internal combustion engine
US6438944B1 (en) 2000-03-17 2002-08-27 Ford Global Technologies, Inc. Method and apparatus for optimizing purge fuel for purging emissions control device
US6477832B1 (en) 2000-03-17 2002-11-12 Ford Global Technologies, Inc. Method for improved performance of a vehicle having an internal combustion engine
US6481199B1 (en) 2000-03-17 2002-11-19 Ford Global Technologies, Inc. Control for improved vehicle performance
US6487850B1 (en) 2000-03-17 2002-12-03 Ford Global Technologies, Inc. Method for improved engine control
US6487849B1 (en) 2000-03-17 2002-12-03 Ford Global Technologies, Inc. Method and apparatus for controlling lean-burn engine based upon predicted performance impact and trap efficiency
US6499293B1 (en) 2000-03-17 2002-12-31 Ford Global Technologies, Inc. Method and system for reducing NOx tailpipe emissions of a lean-burn internal combustion engine
US6594989B1 (en) 2000-03-17 2003-07-22 Ford Global Technologies, Llc Method and apparatus for enhancing fuel economy of a lean burn internal combustion engine
US6810659B1 (en) 2000-03-17 2004-11-02 Ford Global Technologies, Llc Method for determining emission control system operability
US6843051B1 (en) 2000-03-17 2005-01-18 Ford Global Technologies, Llc Method and apparatus for controlling lean-burn engine to purge trap of stored NOx

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57195828A (en) * 1981-05-26 1982-12-01 Mitsubishi Electric Corp Air-fuel ratio controller of otto cycle engine
JPS58174142A (en) * 1982-04-06 1983-10-13 Mitsubishi Electric Corp Feedback controller of air fuel ratio in internal-combustion engine

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57195828A (en) * 1981-05-26 1982-12-01 Mitsubishi Electric Corp Air-fuel ratio controller of otto cycle engine
JPS58174142A (en) * 1982-04-06 1983-10-13 Mitsubishi Electric Corp Feedback controller of air fuel ratio in internal-combustion engine

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6466441A (en) * 1987-09-05 1989-03-13 Toyota Motor Corp Air-fuel ratio control device of internal combustion engine
US5052177A (en) * 1989-03-03 1991-10-01 Toyota Jidosha Kabushiki Kaisha Air-fuel ratio feedback control system having single air-fuel ratio sensor downstream of or within three-way catalyst converter
US5172320A (en) * 1989-03-03 1992-12-15 Toyota Jidosha Kabushiki Kaisha Air-fuel ratio feedback control system having single air-fuel ratio sensor downstream of or within three-way catalyst converter
US5070693A (en) * 1989-11-21 1991-12-10 Toyota Jidosha Kabushiki Kaisha Air-fuel ratio feedback control system having single air-fuel ratio sensor downstream of or within three-way catalyst converter
US5070692A (en) * 1989-12-29 1991-12-10 Toyota Jidosha Kabushiki Kaisha Air-fuel ratio feedback control system having single air-fuel ratio sensor downstream of or within three-way catalyst converter
US5127225A (en) * 1990-07-30 1992-07-07 Toyota Jidosha Kabushiki Kaisha Air-fuel ratio feedback control system having a single air-fuel ratio sensor downstream of a three-way catalyst converter
JPH06146963A (en) * 1992-11-10 1994-05-27 Unisia Jecs Corp Air/fuel ratio feedback controlling device of internal combustion engine
JPH10131788A (en) * 1996-10-29 1998-05-19 Honda Motor Co Ltd Air-fuel ratio control device for internal combustion engine
US6374597B1 (en) 2000-03-17 2002-04-23 Ford Global Technologies, Inc. Method and apparatus for accessing ability of lean NOx trap to store exhaust gas constituent
US6490856B2 (en) 2000-03-17 2002-12-10 Ford Global Technologies, Inc. Control for improved vehicle performance
US6327847B1 (en) 2000-03-17 2001-12-11 Ford Global Technologies, Inc. Method for improved performance of a vehicle
US6843051B1 (en) 2000-03-17 2005-01-18 Ford Global Technologies, Llc Method and apparatus for controlling lean-burn engine to purge trap of stored NOx
US6308515B1 (en) 2000-03-17 2001-10-30 Ford Global Technologies, Inc. Method and apparatus for accessing ability of lean NOx trap to store exhaust gas constituent
US6810659B1 (en) 2000-03-17 2004-11-02 Ford Global Technologies, Llc Method for determining emission control system operability
US6427437B1 (en) 2000-03-17 2002-08-06 Ford Global Technologies, Inc. Method for improved performance of an engine emission control system
US6434930B1 (en) 2000-03-17 2002-08-20 Ford Global Technologies, Inc. Method and apparatus for controlling lean operation of an internal combustion engine
US6438944B1 (en) 2000-03-17 2002-08-27 Ford Global Technologies, Inc. Method and apparatus for optimizing purge fuel for purging emissions control device
US6477832B1 (en) 2000-03-17 2002-11-12 Ford Global Technologies, Inc. Method for improved performance of a vehicle having an internal combustion engine
US6481199B1 (en) 2000-03-17 2002-11-19 Ford Global Technologies, Inc. Control for improved vehicle performance
US6487850B1 (en) 2000-03-17 2002-12-03 Ford Global Technologies, Inc. Method for improved engine control
US6487849B1 (en) 2000-03-17 2002-12-03 Ford Global Technologies, Inc. Method and apparatus for controlling lean-burn engine based upon predicted performance impact and trap efficiency
US6308697B1 (en) 2000-03-17 2001-10-30 Ford Global Technologies, Inc. Method for improved air-fuel ratio control in engines
US6499293B1 (en) 2000-03-17 2002-12-31 Ford Global Technologies, Inc. Method and system for reducing NOx tailpipe emissions of a lean-burn internal combustion engine
US6594989B1 (en) 2000-03-17 2003-07-22 Ford Global Technologies, Llc Method and apparatus for enhancing fuel economy of a lean burn internal combustion engine
US6370868B1 (en) 2000-04-04 2002-04-16 Ford Global Technologies, Inc. Method and system for purge cycle management of a lean NOx trap
US6389803B1 (en) 2000-08-02 2002-05-21 Ford Global Technologies, Inc. Emission control for improved vehicle performance

Similar Documents

Publication Publication Date Title
JPS6453042A (en) Air-fuel ratio controller for internal combustion engine
JPS6453043A (en) Air-fuel ratio controller for internal combustion engine
CA2136908A1 (en) Fuel Injection Amount Control System for Internal Combustion Engines and Intake Passage Wall Temperature-Estimating Device Used Therein
JPH03194144A (en) Air-fuel ratio control device for internal combustion engine
JPS55134729A (en) Controlling device of air-fuel ratio for internal combustion engine
EP0400529A3 (en) Air-fuel ratio control device for internal combustion engine
JPS6453038A (en) Air-fuel ratio controller for internal combustion engine
JPS6466427A (en) Fuel supply control device for internal combustion engine
JPS6424142A (en) Control method for internal combustion engine
US4630589A (en) Exhaust gas recirculation method for internal combustion engines
US6176080B1 (en) Oxygen concentration sensor abnormality-detecting system for internal combustion engines
JPS57119134A (en) Method of injecting fuel into internal combustion engine
JPS6466441A (en) Air-fuel ratio control device of internal combustion engine
JPS5718453A (en) Ignition timing control method for internal combustion engine
EP0641926A3 (en) Fuel injection timing control device and method for internal combustion engine
JPH0415388B2 (en)
JPS5672239A (en) Air-fuel ratio controller for fuel injection type internal combustion engine with supercharger
JPS6453041A (en) Air-fuel ratio controller for internal combustion engine
JPS5546060A (en) Electronic fuel injection device for internal combustion engine
JPS57193740A (en) Combustion controller of internal combustion engine
JPS6453039A (en) Air-fuel ratio controller for internal combustion engine
SU1121472A2 (en) Fuel injection system for internal combustion engine
JPS6412048A (en) Fuel control apparatus of internal combustion engine
JPS6453032A (en) Fuel injection quantity controller for internal combustion engine with exhaust gas recirculation system
JPS6456936A (en) Air-fuel ratio controller for internal combustion engine