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JPS5672228A - Electronic controlling device for air fuel ratio of engine - Google Patents

Electronic controlling device for air fuel ratio of engine

Info

Publication number
JPS5672228A
JPS5672228A JP14824279A JP14824279A JPS5672228A JP S5672228 A JPS5672228 A JP S5672228A JP 14824279 A JP14824279 A JP 14824279A JP 14824279 A JP14824279 A JP 14824279A JP S5672228 A JPS5672228 A JP S5672228A
Authority
JP
Japan
Prior art keywords
signal
sensor
outputs
gate
fuel injection
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
JP14824279A
Other languages
Japanese (ja)
Inventor
Toshimi Murai
Hiroki Matsuoka
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
Priority to JP14824279A priority Critical patent/JPS5672228A/en
Publication of JPS5672228A publication Critical patent/JPS5672228A/en
Pending legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE: To give prescribed signals of fuel injection based on signals fed by an O2-sensor, when there is satisfied at least either condition of whether the O2-sensor is put in an active state or a cooling water temperature reaches more than a prescribed value.
CONSTITUTION: If the O2-sensor 1 outputs a signal of more than a prescribed value, a holding circuit 5 outputs continuously ON-signal to OR gate 6. If the temperature of cooling water becomes more than a prescribed value, a comparator 8 outputs ON- signal to OR gate 6. The OR gate 6 outputs ON-signal to a switching device 10, when at least either of a hold circuit 5 or the comparator 8 feeds ON-signal. The switching device 10, while being fed ON-signal, produces the predetermined signal of fuel injection based on the signal given by the O2-sensor 1, and produces the prescribed signal of fuel injection regardless of the signal given by the O2-sensor, if ON- signal is not fed.
COPYRIGHT: (C)1981,JPO&Japio
JP14824279A 1979-11-14 1979-11-14 Electronic controlling device for air fuel ratio of engine Pending JPS5672228A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14824279A JPS5672228A (en) 1979-11-14 1979-11-14 Electronic controlling device for air fuel ratio of engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14824279A JPS5672228A (en) 1979-11-14 1979-11-14 Electronic controlling device for air fuel ratio of engine

Publications (1)

Publication Number Publication Date
JPS5672228A true JPS5672228A (en) 1981-06-16

Family

ID=15448413

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14824279A Pending JPS5672228A (en) 1979-11-14 1979-11-14 Electronic controlling device for air fuel ratio of engine

Country Status (1)

Country Link
JP (1) JPS5672228A (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52104623A (en) * 1975-09-30 1977-09-02 Nippon Denso Co Ltd Air-fuel ratio feedback type fuel injection apparatus
JPS54108126A (en) * 1978-02-13 1979-08-24 Automob Antipollut & Saf Res Center Air fuel ratio controller
JPS54117828A (en) * 1978-02-11 1979-09-12 Bosch Gmbh Robert Method of and apparatus for driving internal combustion engine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52104623A (en) * 1975-09-30 1977-09-02 Nippon Denso Co Ltd Air-fuel ratio feedback type fuel injection apparatus
JPS54117828A (en) * 1978-02-11 1979-09-12 Bosch Gmbh Robert Method of and apparatus for driving internal combustion engine
JPS54108126A (en) * 1978-02-13 1979-08-24 Automob Antipollut & Saf Res Center Air fuel ratio controller

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