JPS5647636A - Air fuel ratio control device - Google Patents

Air fuel ratio control device

Info

Publication number
JPS5647636A
JPS5647636A JP12385679A JP12385679A JPS5647636A JP S5647636 A JPS5647636 A JP S5647636A JP 12385679 A JP12385679 A JP 12385679A JP 12385679 A JP12385679 A JP 12385679A JP S5647636 A JPS5647636 A JP S5647636A
Authority
JP
Japan
Prior art keywords
level
control device
soft counter
fuel ratio
air fuel
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
JP12385679A
Other languages
Japanese (ja)
Inventor
Toshio Ishii
Shiyouji Suda
Yasunori Mori
Osamu Abe
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP12385679A priority Critical patent/JPS5647636A/en
Publication of JPS5647636A publication Critical patent/JPS5647636A/en
Pending legal-status Critical Current

Links

Landscapes

  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
  • Feedback Control In General (AREA)
  • Control Of Non-Electrical Variables (AREA)

Abstract

PURPOSE: To rationalize the ratio of air to fuel by storing the first and the second comparative level in a soft counter arranged in an RAM circuit of an air fuel ratio control device so as to compare with an adequate level corresponding to each running condition.
CONSTITUTION: A built-in RAM circuit of a computer which is not figured has functions of writing and reading, and has a soft counter. When a main program starts at the step 100, the signal is compared with the first and the second comparative level in the soft counter, and at the step 102, it is judged that a feedback control is necessary or not. As the result, the second level is changed at the step 104, or a control based on the settled second level is operated at the 106 step. At the step 108, it is judged that the operation for one period of the soft counter has been done, or the background disposition step, the step 110, is necessary.
COPYRIGHT: (C)1981,JPO&Japio
JP12385679A 1979-09-28 1979-09-28 Air fuel ratio control device Pending JPS5647636A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12385679A JPS5647636A (en) 1979-09-28 1979-09-28 Air fuel ratio control device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12385679A JPS5647636A (en) 1979-09-28 1979-09-28 Air fuel ratio control device

Publications (1)

Publication Number Publication Date
JPS5647636A true JPS5647636A (en) 1981-04-30

Family

ID=14871080

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12385679A Pending JPS5647636A (en) 1979-09-28 1979-09-28 Air fuel ratio control device

Country Status (1)

Country Link
JP (1) JPS5647636A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62278603A (en) * 1986-05-26 1987-12-03 Mitsubishi Electric Corp Output device for ddc system
JPH02127710A (en) * 1988-11-08 1990-05-16 Osaka Gas Co Ltd Flow rate control system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62278603A (en) * 1986-05-26 1987-12-03 Mitsubishi Electric Corp Output device for ddc system
JPH02127710A (en) * 1988-11-08 1990-05-16 Osaka Gas Co Ltd Flow rate control system

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