JPS5685543A - Controlling device for air-fuel ratio of engine - Google Patents

Controlling device for air-fuel ratio of engine

Info

Publication number
JPS5685543A
JPS5685543A JP16342779A JP16342779A JPS5685543A JP S5685543 A JPS5685543 A JP S5685543A JP 16342779 A JP16342779 A JP 16342779A JP 16342779 A JP16342779 A JP 16342779A JP S5685543 A JPS5685543 A JP S5685543A
Authority
JP
Japan
Prior art keywords
air
fuel ratio
circuit
constant
comparative
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
JP16342779A
Other languages
Japanese (ja)
Inventor
Yoshinori Motoiden
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.)
Mazda Motor Corp
Original Assignee
Mazda Motor Corp
Toyo Kogyo 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 Mazda Motor Corp, Toyo Kogyo Co Ltd filed Critical Mazda Motor Corp
Priority to JP16342779A priority Critical patent/JPS5685543A/en
Publication of JPS5685543A publication Critical patent/JPS5685543A/en
Pending legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE: To enable it to do more correctly air-fuel ratio control by a method wherein an air-fuel ratio control circuit is provided with a correction circuit which enlarges at least either of the constant of a comparative circuit and of the constant of integration circuit in proportion as the deviation of the air-fuel ratio against the set air-fuel ratio increases.
CONSTITUTION: An air-fuel control circuit 19 is provided with a circuit 20 wherein in proportion as the deviation of the air-fuel ratio against the set air-fuel ratio increases, the comparative constant of the comparative circuit 25 and the integration constant of the integration circuit are made to enlarge, while the output of the adder 26 and the output of the duty ratio control circuit 24 are corrected. In base the air- fuel ratio of gaseous mixture against the set air-fuel ratio is greatly biased either on the rich side or on the lean side, the deviation value is big and consequently the constant each of the integration circuit 24 and the comparative circuit 25 increases by the correction circuit 20. Thereby the fluctuation quantity of the actuator 16 for the main auxiliary air bleed increases and thus the air-fuel ratio control can be done under the good responsiveness.
COPYRIGHT: (C)1981,JPO&Japio
JP16342779A 1979-12-15 1979-12-15 Controlling device for air-fuel ratio of engine Pending JPS5685543A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16342779A JPS5685543A (en) 1979-12-15 1979-12-15 Controlling device for air-fuel ratio of engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16342779A JPS5685543A (en) 1979-12-15 1979-12-15 Controlling device for air-fuel ratio of engine

Publications (1)

Publication Number Publication Date
JPS5685543A true JPS5685543A (en) 1981-07-11

Family

ID=15773687

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16342779A Pending JPS5685543A (en) 1979-12-15 1979-12-15 Controlling device for air-fuel ratio of engine

Country Status (1)

Country Link
JP (1) JPS5685543A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5963329A (en) * 1982-10-02 1984-04-11 Nippon Denso Co Ltd Overflow timing control system for fuel injection device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5963329A (en) * 1982-10-02 1984-04-11 Nippon Denso Co Ltd Overflow timing control system for fuel injection device

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