JPS6415449A - Air-fuel ratio learning control device for engine - Google Patents

Air-fuel ratio learning control device for engine

Info

Publication number
JPS6415449A
JPS6415449A JP62171378A JP17137887A JPS6415449A JP S6415449 A JPS6415449 A JP S6415449A JP 62171378 A JP62171378 A JP 62171378A JP 17137887 A JP17137887 A JP 17137887A JP S6415449 A JPS6415449 A JP S6415449A
Authority
JP
Japan
Prior art keywords
air flow
learning
air
injector
fuel ratio
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
JP62171378A
Other languages
Japanese (ja)
Other versions
JPH06100126B2 (en
Inventor
Junichi Ishii
Matsuo Amano
Nobuo Kurihara
Takeshi Atago
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 JP17137887A priority Critical patent/JPH06100126B2/en
Priority to US07/215,815 priority patent/US4991102A/en
Priority to GB8816203A priority patent/GB2207779B/en
Priority to KR1019880008489A priority patent/KR0123561B1/en
Priority to DE3823277A priority patent/DE3823277A1/en
Publication of JPS6415449A publication Critical patent/JPS6415449A/en
Publication of JPH06100126B2 publication Critical patent/JPH06100126B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE:To obtain the invariably correct control by performing the learning correction of the injector coefficient indicating the characteristic of an injector in the medium flow area of the air flow and performing the learning correction of the characteristic of an air flow sensor in the other flow area. CONSTITUTION:The basic fuel injection time is determined based on the detection signal of an air flow detecting means 1000 such as a hot-wire type air flow sensor, the feedback air fuel ratio detection signal and injector coefficient are applied to this basic fuel injection time as the correction coefficient, thereby the theoretical air-fuel ratio is calculated. In this control device, a learning switching means 3000 is driven in response to the magnitude of the detected air flow, and a learning means 3500 is activated to perform the learning correction of the injector coefficient in the medium flow area, on the other hand a learning means 3600 is activated in the other air flow area, and the learning correction of the characteristic of the air flow sensor 1000 is performed with the learning-corrected injector coefficient.
JP17137887A 1987-07-09 1987-07-09 Engine air-fuel ratio learning control device Expired - Lifetime JPH06100126B2 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP17137887A JPH06100126B2 (en) 1987-07-09 1987-07-09 Engine air-fuel ratio learning control device
US07/215,815 US4991102A (en) 1987-07-09 1988-07-06 Engine control system using learning control
GB8816203A GB2207779B (en) 1987-07-09 1988-07-07 Engine control system using learning control
KR1019880008489A KR0123561B1 (en) 1987-07-09 1988-07-08 Engine control system using learning control
DE3823277A DE3823277A1 (en) 1987-07-09 1988-07-08 ENGINE CONTROL SYSTEM

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17137887A JPH06100126B2 (en) 1987-07-09 1987-07-09 Engine air-fuel ratio learning control device

Publications (2)

Publication Number Publication Date
JPS6415449A true JPS6415449A (en) 1989-01-19
JPH06100126B2 JPH06100126B2 (en) 1994-12-12

Family

ID=15922069

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17137887A Expired - Lifetime JPH06100126B2 (en) 1987-07-09 1987-07-09 Engine air-fuel ratio learning control device

Country Status (1)

Country Link
JP (1) JPH06100126B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4992822A (en) * 1986-04-01 1991-02-12 Brother Kogyo Kabushiki Kaisha Optical printing system
US5722705A (en) * 1995-06-24 1998-03-03 Nec Corporation Lock structure for cover of electronic appliance

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4992822A (en) * 1986-04-01 1991-02-12 Brother Kogyo Kabushiki Kaisha Optical printing system
US5722705A (en) * 1995-06-24 1998-03-03 Nec Corporation Lock structure for cover of electronic appliance

Also Published As

Publication number Publication date
JPH06100126B2 (en) 1994-12-12

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