JPS5634940A - Air-fuel ratio control apparatus - Google Patents

Air-fuel ratio control apparatus

Info

Publication number
JPS5634940A
JPS5634940A JP9885079A JP9885079A JPS5634940A JP S5634940 A JPS5634940 A JP S5634940A JP 9885079 A JP9885079 A JP 9885079A JP 9885079 A JP9885079 A JP 9885079A JP S5634940 A JPS5634940 A JP S5634940A
Authority
JP
Japan
Prior art keywords
air
fuel ratio
circuit
sensor
acceleration
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
JP9885079A
Other languages
Japanese (ja)
Other versions
JPS6254990B2 (en
Inventor
Fujio Matsui
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.)
Subaru Corp
Nissan Motor Co Ltd
Original Assignee
Nissan Motor Co Ltd
Fuji Heavy Industries 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, Fuji Heavy Industries Ltd filed Critical Nissan Motor Co Ltd
Priority to JP9885079A priority Critical patent/JPS5634940A/en
Priority to GB8025002A priority patent/GB2056723B/en
Priority to US06/174,377 priority patent/US4356797A/en
Priority to DE3029325A priority patent/DE3029325C2/en
Priority to FR8017159A priority patent/FR2463282B1/en
Publication of JPS5634940A publication Critical patent/JPS5634940A/en
Publication of JPS6254990B2 publication Critical patent/JPS6254990B2/ja
Granted legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE: To achieve a theoretical air-fuel ratio faster in a transition period of an engine operation by making the cycle of an air-fuel ratio control more frequent on the basis of signals from an O2 sensor and throttle sensor in an exhaust system.
CONSTITUTION: Each signal of an O2 sensor 19 an throttle sensor 20 is transmitted to a controller 21 so as to control solenoid valves 14, 15 which act to vary the air breed of a carburetter. A signal is transmitted from the O2 sensor 19 to a shaping circuit 23 in way of an amplifying circuit 22, into which circuit 23 a slice level is also input. By setting its center valve, an addition of signals is performed in an addition circuit 28 into which a signal corresponding to each acceleration or deceleration state is fed from the throttle sensor 20. At the same time, a change in an air- fuel ratio caused by a change in the acceleration or deceleration degree is anticipated at a super-position circuit 30 and a comparator circuit 31. On the basis of the anticipated valve, the air-fuel ratio during the acceleration or deceleration is controlled.
COPYRIGHT: (C)1981,JPO&Japio
JP9885079A 1979-08-02 1979-08-02 Air-fuel ratio control apparatus Granted JPS5634940A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP9885079A JPS5634940A (en) 1979-08-02 1979-08-02 Air-fuel ratio control apparatus
GB8025002A GB2056723B (en) 1979-08-02 1980-07-31 Automatic control of air/fuel ratio in ic engines
US06/174,377 US4356797A (en) 1979-08-02 1980-08-01 System for controlling air-fuel ratio
DE3029325A DE3029325C2 (en) 1979-08-02 1980-08-01 Arrangement for regulating the fuel-air ratio of a carburetor of an internal combustion engine
FR8017159A FR2463282B1 (en) 1979-08-02 1980-08-04 AIR-FUEL RATIO CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE CARBURETOR

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9885079A JPS5634940A (en) 1979-08-02 1979-08-02 Air-fuel ratio control apparatus

Publications (2)

Publication Number Publication Date
JPS5634940A true JPS5634940A (en) 1981-04-07
JPS6254990B2 JPS6254990B2 (en) 1987-11-17

Family

ID=14230703

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9885079A Granted JPS5634940A (en) 1979-08-02 1979-08-02 Air-fuel ratio control apparatus

Country Status (1)

Country Link
JP (1) JPS5634940A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02211350A (en) * 1989-02-09 1990-08-22 Mitsubishi Motors Corp Air-fuel ratio controller for internal combustion engine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02211350A (en) * 1989-02-09 1990-08-22 Mitsubishi Motors Corp Air-fuel ratio controller for internal combustion engine

Also Published As

Publication number Publication date
JPS6254990B2 (en) 1987-11-17

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