JPS5656933A - Air-fuel ratio controlling apparatus for internal combustion engine - Google Patents

Air-fuel ratio controlling apparatus for internal combustion engine

Info

Publication number
JPS5656933A
JPS5656933A JP13290779A JP13290779A JPS5656933A JP S5656933 A JPS5656933 A JP S5656933A JP 13290779 A JP13290779 A JP 13290779A JP 13290779 A JP13290779 A JP 13290779A JP S5656933 A JPS5656933 A JP S5656933A
Authority
JP
Japan
Prior art keywords
integrator
comparator
fuel ratio
air
reference voltage
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
JP13290779A
Other languages
Japanese (ja)
Other versions
JPS6257814B2 (en
Inventor
Kaoru Uno
Michio Takegawa
Toshiaki Isobe
Kazuhisa Sawada
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 JP13290779A priority Critical patent/JPS5656933A/en
Publication of JPS5656933A publication Critical patent/JPS5656933A/en
Publication of JPS6257814B2 publication Critical patent/JPS6257814B2/ja
Granted legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE: To keep an appropriate air-fuel ratio independently of the composition of fuel and to thereby prevent degradation in the exhaust-gas purifying performance of an engine, by providing a control means for changing the reference voltage of a comparator in response to a predetermined value of the output voltage of an integrator.
CONSTITUTION: When the output voltage of an integrator 18 is lowr than a reference voltage Va, the output of a comparator 25 is kept at zero, so that a reference voltage Vb1 is applied from a reference power source 28 to an inverted terminal of a comparator 17 via a switching element 27. Since pulses from an air-fuel ratio sensor 11 are thus compared with a lower reference voltage Vb1, the rising time of output pulses of comparator 17 is determined relatively promptly at the inclined side along which rises the pulses from sensor 11 and the end of the rising period of the output voltage of integrator 18 is also determined relatively promptly. Therefore, it is enabled to prevent rising of the output voltage of integrator 18.
COPYRIGHT: (C)1981,JPO&Japio
JP13290779A 1979-10-17 1979-10-17 Air-fuel ratio controlling apparatus for internal combustion engine Granted JPS5656933A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13290779A JPS5656933A (en) 1979-10-17 1979-10-17 Air-fuel ratio controlling apparatus for internal combustion engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13290779A JPS5656933A (en) 1979-10-17 1979-10-17 Air-fuel ratio controlling apparatus for internal combustion engine

Publications (2)

Publication Number Publication Date
JPS5656933A true JPS5656933A (en) 1981-05-19
JPS6257814B2 JPS6257814B2 (en) 1987-12-02

Family

ID=15092311

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13290779A Granted JPS5656933A (en) 1979-10-17 1979-10-17 Air-fuel ratio controlling apparatus for internal combustion engine

Country Status (1)

Country Link
JP (1) JPS5656933A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54132021A (en) * 1978-04-03 1979-10-13 Nippon Denso Co Ltd Air-fuel-ratio controller

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54132021A (en) * 1978-04-03 1979-10-13 Nippon Denso Co Ltd Air-fuel-ratio controller

Also Published As

Publication number Publication date
JPS6257814B2 (en) 1987-12-02

Similar Documents

Publication Publication Date Title
JPS5264539A (en) Feedback air fuel ratio type mixture controller
JPS52102934A (en) Air-fuel ratio control system
JPS57210137A (en) Feedback control device of air-fuel ratio in internal combustion engine
JPS57143160A (en) Ignition device for internal combustion engine
JPS55112838A (en) Air-fuel ratio controller
JPS52139827A (en) Fuel control circuit of fuel injection pump for internal combustion engine
JPS55161932A (en) Air-fuel ratio controller
JPS52115917A (en) Intake method and intake system device for internal combustion engine
JPS5397130A (en) Electronic ignition timing control system for internal combustion engine
JPS5656933A (en) Air-fuel ratio controlling apparatus for internal combustion engine
JPS5248741A (en) Internal combustion engine ignition device
JPS548222A (en) Controller for maximum fuel injection of internal combustion engine
JPS529724A (en) Air-fuel ratio adjusting device
JPS52132223A (en) Mixed gas controlling apparatus
JPS5393226A (en) Internal combustion engine centrifugal force type governor
JPS52129828A (en) Internal combustion engine
JPS5455232A (en) Fuel feeding cylinder quantity controlling engine
JPS54126823A (en) Air fuel ratio controller for internal combustion engine
JPS57188743A (en) Electronic air-fuel ratio feedback controller for internal combustion engine
JPS5381826A (en) Air fuel ratio controller
JPS52114824A (en) Fuel injection timing control for diesel engine
JPS52114825A (en) Fuel injection timing control for diesel engine
JPS54111016A (en) Air-fuel ratio controller for internal combustion engine
JPS5656932A (en) Air-fuel ratio controlling apparatus for internal combustion engine
JPS51117234A (en) Process of air-fuel ratio control in internal-combustion engine