JPS6460767A - Method for controlling air-fuel ratio of internal combustion engine mounted on vehicle - Google Patents

Method for controlling air-fuel ratio of internal combustion engine mounted on vehicle

Info

Publication number
JPS6460767A
JPS6460767A JP21732987A JP21732987A JPS6460767A JP S6460767 A JPS6460767 A JP S6460767A JP 21732987 A JP21732987 A JP 21732987A JP 21732987 A JP21732987 A JP 21732987A JP S6460767 A JPS6460767 A JP S6460767A
Authority
JP
Japan
Prior art keywords
speed
sensor
vehicle
vehicle speed
speed reduction
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
JP21732987A
Other languages
Japanese (ja)
Inventor
Toshio Sato
Ryoji Abe
Yuji Fujiki
Hiroshi Hasebe
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.)
Honda Motor Co Ltd
Original Assignee
Honda 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 Honda Motor Co Ltd filed Critical Honda Motor Co Ltd
Priority to JP21732987A priority Critical patent/JPS6460767A/en
Priority to US07/238,425 priority patent/US4938199A/en
Publication of JPS6460767A publication Critical patent/JPS6460767A/en
Pending legal-status Critical Current

Links

Landscapes

  • Control Of Vehicle Engines Or Engines For Specific Uses (AREA)

Abstract

PURPOSE:To prevent an engine from stall due to overlean air fuel ration in low speed vehicle by controlling a secondary air amount in an intake system according to the change speed of running parameter showing the speed reduction condition in the speed reduction and low vehicle speed so long as an automatic transmission is not in gear. CONSTITUTION:To a control circuit 20 are input values detected by a negative pressure switch 7, absolute intake pressure sensor 10, crank angle sensor 11, water temperature sensor 12, intake temperature sensor 13, O2 sensor 14, vehicle speed sensor 16, neutral switch 19, etc. When the control circuit 20 judges speed reduction on the bass of the change amount of absolute intake pressure in the cooling water temperature and vehicle speed higher than predetermined ones, it controls the opening of a proportional electromagnetic valve 9 provided in a secondary intake air supply path 8 on the basis of the change amount of absolute intake pressure. When an automatic transmission is however in gear within a low vehicle speed region, the control of proportional electromagnetic valve 9 in the speed reduction is stopped to close said valve.
JP21732987A 1987-08-31 1987-08-31 Method for controlling air-fuel ratio of internal combustion engine mounted on vehicle Pending JPS6460767A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP21732987A JPS6460767A (en) 1987-08-31 1987-08-31 Method for controlling air-fuel ratio of internal combustion engine mounted on vehicle
US07/238,425 US4938199A (en) 1987-08-31 1988-08-31 Method for controlling the air-fuel ratio in vehicle internal combustion engines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP21732987A JPS6460767A (en) 1987-08-31 1987-08-31 Method for controlling air-fuel ratio of internal combustion engine mounted on vehicle

Publications (1)

Publication Number Publication Date
JPS6460767A true JPS6460767A (en) 1989-03-07

Family

ID=16702472

Family Applications (1)

Application Number Title Priority Date Filing Date
JP21732987A Pending JPS6460767A (en) 1987-08-31 1987-08-31 Method for controlling air-fuel ratio of internal combustion engine mounted on vehicle

Country Status (1)

Country Link
JP (1) JPS6460767A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04353990A (en) * 1991-05-30 1992-12-08 Hitachi Eng Co Ltd Method and device for pattern matching
CN106555711A (en) * 2015-09-29 2017-04-05 长城汽车股份有限公司 Electromotor supplementing method for air

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04353990A (en) * 1991-05-30 1992-12-08 Hitachi Eng Co Ltd Method and device for pattern matching
CN106555711A (en) * 2015-09-29 2017-04-05 长城汽车股份有限公司 Electromotor supplementing method for air
CN106555711B (en) * 2015-09-29 2019-03-12 长城汽车股份有限公司 Engine supplementing method for air

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