JPS56151248A - Controlling device for air-fuel ratio - Google Patents

Controlling device for air-fuel ratio

Info

Publication number
JPS56151248A
JPS56151248A JP5340780A JP5340780A JPS56151248A JP S56151248 A JPS56151248 A JP S56151248A JP 5340780 A JP5340780 A JP 5340780A JP 5340780 A JP5340780 A JP 5340780A JP S56151248 A JPS56151248 A JP S56151248A
Authority
JP
Japan
Prior art keywords
control
air
rom10
fuel ratio
memorized
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
JP5340780A
Other languages
Japanese (ja)
Inventor
Hiroshi Yamaguchi
Kenji Ikeura
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.)
Nissan Motor Co Ltd
Original Assignee
Nissan 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 Nissan Motor Co Ltd filed Critical Nissan Motor Co Ltd
Priority to JP5340780A priority Critical patent/JPS56151248A/en
Publication of JPS56151248A publication Critical patent/JPS56151248A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To rationalize the air-fuel ratio by memorizing the dury ratio for feedback control in the various operational conditions of an engine beforehand in accordance with the number of revolutions and load and by continuing the control in accordance with memorized values at th time of transitional operation.
CONSTITUTION: A control unit 7 for feedback control is provided with a microprocessor 8, an input-output control circuit 9 and ROM10, RAM11 as memory circuits. In the ROM10, the duty ratio according to signals from a revolution-speed detecting means 13 and form a detecting means 14 for the load of intake negative pressure is memorized beforehand. And, at the time of normal operation, the control of air bleed of a carburetor is performed based on a signal from an air-fuel ratio sensor 12, while at the time of transitional operation the control is conducted on the basis of the duty ratio memorized in the ROM10.
COPYRIGHT: (C)1981,JPO&Japio
JP5340780A 1980-04-22 1980-04-22 Controlling device for air-fuel ratio Pending JPS56151248A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5340780A JPS56151248A (en) 1980-04-22 1980-04-22 Controlling device for air-fuel ratio

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5340780A JPS56151248A (en) 1980-04-22 1980-04-22 Controlling device for air-fuel ratio

Publications (1)

Publication Number Publication Date
JPS56151248A true JPS56151248A (en) 1981-11-24

Family

ID=12941963

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5340780A Pending JPS56151248A (en) 1980-04-22 1980-04-22 Controlling device for air-fuel ratio

Country Status (1)

Country Link
JP (1) JPS56151248A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60201064A (en) * 1984-03-26 1985-10-11 Yanmar Diesel Engine Co Ltd Air-fuel ratio controlling device for gas engine
JPS6120538A (en) * 1984-07-06 1986-01-29 株式会社島津製作所 Ultrasonic diagnostic apparatus

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60201064A (en) * 1984-03-26 1985-10-11 Yanmar Diesel Engine Co Ltd Air-fuel ratio controlling device for gas engine
JPH0251067B2 (en) * 1984-03-26 1990-11-06 Yanmar Diesel Engine Co
JPS6120538A (en) * 1984-07-06 1986-01-29 株式会社島津製作所 Ultrasonic diagnostic apparatus

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