JPS57195828A - Air-fuel ratio controller of otto cycle engine - Google Patents

Air-fuel ratio controller of otto cycle engine

Info

Publication number
JPS57195828A
JPS57195828A JP8131081A JP8131081A JPS57195828A JP S57195828 A JPS57195828 A JP S57195828A JP 8131081 A JP8131081 A JP 8131081A JP 8131081 A JP8131081 A JP 8131081A JP S57195828 A JPS57195828 A JP S57195828A
Authority
JP
Japan
Prior art keywords
air
fuel ratio
output
period
control unit
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
JP8131081A
Other languages
Japanese (ja)
Inventor
Shoichi Washino
Masahiro Tano
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
Original Assignee
Mitsubishi Electric 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 filed Critical Mitsubishi Electric Corp
Priority to JP8131081A priority Critical patent/JPS57195828A/en
Publication of JPS57195828A publication Critical patent/JPS57195828A/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
    • F02D41/1473—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the regulation method
    • F02D41/1474—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the regulation method by detecting the commutation time of the sensor

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)

Abstract

PURPOSE:To improve purifying efficiency of a catalyzer, by variably controlling change of amplitude and period of air-fuel ratio through a fuel injector control unit further performing feedback operation of mean air-fuel ratio to said control unit. CONSTITUTION:In a controller of air-fuel ratio, in which an injector 2 is controlled through a control unit 12 on the basis of each output of an oxygen sensor 10, set in an exhaust line 9, and an air flow sensor 11 in an engine 8, an arithmetic circuit 121 and amplifying circuit 122 are provided in a signal line of the oxygen sensor 10. This arithmetic circuit 121 is constituted such that in a period of change of output from the oxygen sensor 10, a time of lean level or rich level is detected to calculate the time for in what proportion it is occupied in the period. While the amplifying circuit 122 is constituted to amplify a difference between output of the arithmetic circuit 121 and a reference value, and output of this circuit 122 is input to said unit 12.
JP8131081A 1981-05-26 1981-05-26 Air-fuel ratio controller of otto cycle engine Pending JPS57195828A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8131081A JPS57195828A (en) 1981-05-26 1981-05-26 Air-fuel ratio controller of otto cycle engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8131081A JPS57195828A (en) 1981-05-26 1981-05-26 Air-fuel ratio controller of otto cycle engine

Publications (1)

Publication Number Publication Date
JPS57195828A true JPS57195828A (en) 1982-12-01

Family

ID=13742820

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8131081A Pending JPS57195828A (en) 1981-05-26 1981-05-26 Air-fuel ratio controller of otto cycle engine

Country Status (1)

Country Link
JP (1) JPS57195828A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6166829A (en) * 1984-09-11 1986-04-05 Yanmar Diesel Engine Co Ltd Air-fuel ratio controller for gas engine
JPS6453042A (en) * 1987-08-24 1989-03-01 Mitsubishi Motors Corp Air-fuel ratio controller for internal combustion engine
EP0816656A2 (en) * 1996-06-25 1998-01-07 NGK Spark Plug Co. Ltd. An air/fuel ratio detection device and an air/fuel ratio control device
JPH10131790A (en) * 1996-10-29 1998-05-19 Honda Motor Co Ltd Air-fuel ratio control device for internal combustion engine

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5281438A (en) * 1975-12-27 1977-07-07 Nissan Motor Co Ltd Air fuel ratio controller

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5281438A (en) * 1975-12-27 1977-07-07 Nissan Motor Co Ltd Air fuel ratio controller

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6166829A (en) * 1984-09-11 1986-04-05 Yanmar Diesel Engine Co Ltd Air-fuel ratio controller for gas engine
JPS6453042A (en) * 1987-08-24 1989-03-01 Mitsubishi Motors Corp Air-fuel ratio controller for internal combustion engine
EP0816656A2 (en) * 1996-06-25 1998-01-07 NGK Spark Plug Co. Ltd. An air/fuel ratio detection device and an air/fuel ratio control device
EP0816656A3 (en) * 1996-06-25 1999-11-10 NGK Spark Plug Co. Ltd. An air/fuel ratio detection device and an air/fuel ratio control device
US6055844A (en) * 1996-06-25 2000-05-02 Ngk Spark Plug Co., Ltd. Air/fuel ratio detection device and an air/fuel ratio control device
JPH10131790A (en) * 1996-10-29 1998-05-19 Honda Motor Co Ltd Air-fuel ratio control device for internal combustion engine

Similar Documents

Publication Publication Date Title
JPS648334A (en) Air-fuel ratio controller of engine
KR850001962A (en) Engine control
US4402293A (en) Air-fuel ratio control system
JPS6321017B2 (en)
JPS57195828A (en) Air-fuel ratio controller of otto cycle engine
JPS6453038A (en) Air-fuel ratio controller for internal combustion engine
JPS648332A (en) Air-fuel ratio controlling method
JPS5718439A (en) Fuel-air ratio controller for engine
JPS5773840A (en) Air fuel ratio controller
JPS5797038A (en) Air-fuel ratio control apparatus
JPS5776234A (en) Control method for air fuel ratio of internal combustion engine
JPS56156433A (en) Air/fuel ratio control device
JPS6415447A (en) Air-fuel ratio control device for internal combustion engine
GB1375148A (en)
JPS6321018B2 (en)
JPS5618044A (en) Air-fuel ratio feedback control system for internal combustion engine
JPS52132223A (en) Mixed gas controlling apparatus
JPS5469614A (en) Secondary air supply controller
JPS5525531A (en) Feedback type air-fuel ratio controlling apparatus
JPS57203841A (en) Air-fuel ratio control device for internal-combustion engine
JPS57203842A (en) Air-fuel control device for internal-combustion engine
JPS6432043A (en) Air-fuel ratio controller for engine
JPS6254991B2 (en)
JPS57155016A (en) Controlling device for multi-stage incinerator
JPS5381826A (en) Air fuel ratio controller