JPS5772054A - Compensator for o2 sensor trouble in air-auel ratio controller for internal combustion engine - Google Patents

Compensator for o2 sensor trouble in air-auel ratio controller for internal combustion engine

Info

Publication number
JPS5772054A
JPS5772054A JP55124913A JP12491380A JPS5772054A JP S5772054 A JPS5772054 A JP S5772054A JP 55124913 A JP55124913 A JP 55124913A JP 12491380 A JP12491380 A JP 12491380A JP S5772054 A JPS5772054 A JP S5772054A
Authority
JP
Japan
Prior art keywords
air
fuel ratio
sensor
abnormal
signal
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
JP55124913A
Other languages
Japanese (ja)
Other versions
JPS6326860B2 (en
Inventor
Kazuo Otsuka
Shin Narasaka
Shunpei Hasegawa
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.)
Honda Motor Co Ltd
Original Assignee
Honda Motor Co Ltd
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 Honda Motor Co Ltd filed Critical Honda Motor Co Ltd
Priority to JP55124913A priority Critical patent/JPS5772054A/en
Publication of JPS5772054A publication Critical patent/JPS5772054A/en
Publication of JPS6326860B2 publication Critical patent/JPS6326860B2/ja
Granted 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
    • F02D41/1493—Details
    • F02D41/1495—Detection of abnormalities in the air/fuel ratio feedback system

Landscapes

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

Abstract

PURPOSE:To enable to perform a reliable detection of a trouble and to prevent a control of an abnormal air-fuel ratio, by a method wherein a trouble in a wiring system is decided corresponding to an output so as to obtain the air-fuel ratio corresponding to an atmospheric pressure. CONSTITUTION:A device consists of the following means and circuits; an O2 sensor activation deciding means which outputs an activation signal at an activating time of the O2 sensor; an air-fuel decision circuit 64 which outputs a binary signal equivalent to a detecting air-fuel ratio that is larger or smaller than a theoretical air- fuel ratio through the comparision of the output of the O2 sensor with a set value; an abnormal decision circuit 75 which outputs an abnormal signal when no binary signal is inverted during a given period of time and during the output of an activation signal; and a means 63 which regulates a fuel amount regulator so as to obtain an air-fuel ratio corresponding to an atmospheric pressure according to the abnormal signal. The device reliably detects troubles in an O2 sensor 9, a carbureter 3, a pulse and a wiring system among said devices.
JP55124913A 1980-09-08 1980-09-08 Compensator for o2 sensor trouble in air-auel ratio controller for internal combustion engine Granted JPS5772054A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55124913A JPS5772054A (en) 1980-09-08 1980-09-08 Compensator for o2 sensor trouble in air-auel ratio controller for internal combustion engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55124913A JPS5772054A (en) 1980-09-08 1980-09-08 Compensator for o2 sensor trouble in air-auel ratio controller for internal combustion engine

Publications (2)

Publication Number Publication Date
JPS5772054A true JPS5772054A (en) 1982-05-06
JPS6326860B2 JPS6326860B2 (en) 1988-05-31

Family

ID=14897211

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55124913A Granted JPS5772054A (en) 1980-09-08 1980-09-08 Compensator for o2 sensor trouble in air-auel ratio controller for internal combustion engine

Country Status (1)

Country Link
JP (1) JPS5772054A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62174547A (en) * 1986-01-27 1987-07-31 Toyota Motor Corp Air-fuel ratio controller for engine
US4928518A (en) * 1988-02-25 1990-05-29 Nissan Motor Company, Limited Oxygen sensor operability sensing arrangement

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5165992A (en) * 1974-11-06 1976-06-08 Bendix Corp Nainenkikannotameno haikigasu sensa no dosajotaikenshutsusochi

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5165992A (en) * 1974-11-06 1976-06-08 Bendix Corp Nainenkikannotameno haikigasu sensa no dosajotaikenshutsusochi

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62174547A (en) * 1986-01-27 1987-07-31 Toyota Motor Corp Air-fuel ratio controller for engine
US4928518A (en) * 1988-02-25 1990-05-29 Nissan Motor Company, Limited Oxygen sensor operability sensing arrangement

Also Published As

Publication number Publication date
JPS6326860B2 (en) 1988-05-31

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