JPS54133229A - Fuel-air ratio controller - Google Patents

Fuel-air ratio controller

Info

Publication number
JPS54133229A
JPS54133229A JP4056378A JP4056378A JPS54133229A JP S54133229 A JPS54133229 A JP S54133229A JP 4056378 A JP4056378 A JP 4056378A JP 4056378 A JP4056378 A JP 4056378A JP S54133229 A JPS54133229 A JP S54133229A
Authority
JP
Japan
Prior art keywords
suction pipe
pressure
change rate
fuel
air 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.)
Pending
Application number
JP4056378A
Other languages
Japanese (ja)
Inventor
Junzo Uozumi
Masatoshi Sugiura
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.)
Aisan Industry Co Ltd
Original Assignee
Aisan Industry 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 Aisan Industry Co Ltd filed Critical Aisan Industry Co Ltd
Priority to JP4056378A priority Critical patent/JPS54133229A/en
Publication of JPS54133229A publication Critical patent/JPS54133229A/en
Pending legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE: To reduce response lag by PI-controlling fuel-air ratio according to suction pipe negative pressure change rate.
CONSTITUTION: A secondary air injection solenoid valve 6, air bleed adjusting solenoid valves 6' and 6", pressure convertor 7 which detects suction pipe negative pressure and converts it into an electrical signal, and a pressure switch 13 are fitted to a suction pipe 2 and connected, together with a temperature switch 8, to a control circuit comprising a pressure change rate arithmetic circuit. When the mixture gas metered by a caburettor 1 is fed to an engine 3 through the suction pipe 2 and exhausted through an exhaust manifold 4 and an exhaust pipe 5, the control circuit 9 computes suction pipe negative pressure change rate based on the signals from the pressure convertor 7, temperature switch 8, and pressure switch 13; and it PI-controls the fuel-air ratio and conducts feedback control in suction system through the function of solenoid valves 6W6" so as to reduce response lag.
COPYRIGHT: (C)1979,JPO&Japio
JP4056378A 1978-04-06 1978-04-06 Fuel-air ratio controller Pending JPS54133229A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4056378A JPS54133229A (en) 1978-04-06 1978-04-06 Fuel-air ratio controller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4056378A JPS54133229A (en) 1978-04-06 1978-04-06 Fuel-air ratio controller

Publications (1)

Publication Number Publication Date
JPS54133229A true JPS54133229A (en) 1979-10-16

Family

ID=12583924

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4056378A Pending JPS54133229A (en) 1978-04-06 1978-04-06 Fuel-air ratio controller

Country Status (1)

Country Link
JP (1) JPS54133229A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60247024A (en) * 1984-02-08 1985-12-06 フイアツト　オ−ト　ソチエタ　ペル　アツイオニ Method and apparatus for monitoring air fuel ratio in operation of internal combustion engine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60247024A (en) * 1984-02-08 1985-12-06 フイアツト　オ−ト　ソチエタ　ペル　アツイオニ Method and apparatus for monitoring air fuel ratio in operation of internal combustion engine

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