JPS57165650A - Air-fuel ratio controller of carburetor - Google Patents

Air-fuel ratio controller of carburetor

Info

Publication number
JPS57165650A
JPS57165650A JP5140581A JP5140581A JPS57165650A JP S57165650 A JPS57165650 A JP S57165650A JP 5140581 A JP5140581 A JP 5140581A JP 5140581 A JP5140581 A JP 5140581A JP S57165650 A JPS57165650 A JP S57165650A
Authority
JP
Japan
Prior art keywords
fuel
restarting
air
circuit
control
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
JP5140581A
Other languages
Japanese (ja)
Inventor
Tatsuro Morita
Giichi Shioyama
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.)
Nissan Motor Co Ltd
Original Assignee
Nissan 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 Nissan Motor Co Ltd filed Critical Nissan Motor Co Ltd
Priority to JP5140581A priority Critical patent/JPS57165650A/en
Publication of JPS57165650A publication Critical patent/JPS57165650A/en
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/04—Introducing corrections for particular operating conditions
    • F02D41/06—Introducing corrections for particular operating conditions for engine starting or warming up
    • F02D41/062—Introducing corrections for particular operating conditions for engine starting or warming up for starting
    • F02D41/065—Introducing corrections for particular operating conditions for engine starting or warming up for starting at hot start or restart

Abstract

PURPOSE:To reduce harmful exhaust gas due to diluted fuel gas at restarting of a carburetor having air amount control and fuel on-off solenoid valves, by temporarily fully closing the solenoid valve at restarting of fuel feed. CONSTITUTION:An oxygen sensor signal S1 and slow cut solenoid control signal C2 are input to an arithmetic circuit 11, when the C2 is turned from off to on, that is, when a fuel feed is restarted, a selector 1105 short-circuits an integrating circuit 1103 for a prescribed time to temporarily set the integration to 0. On the other hand, a selector 1106 opens output of a proportional circuit 1102 to set the proportion to 0, and output of an adder circuit 1104 temporarily becomes 0, and then normal control is restored. Accordingly, at restarting of fuel feed, a control solenoid valve is once fully closed, and then a feed amount of air is controlled by duty ratio calculated by the oxygen sensor signal S1. In this way, fuel of rich mixture ratio can be fed at restarting.
JP5140581A 1981-04-06 1981-04-06 Air-fuel ratio controller of carburetor Pending JPS57165650A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5140581A JPS57165650A (en) 1981-04-06 1981-04-06 Air-fuel ratio controller of carburetor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5140581A JPS57165650A (en) 1981-04-06 1981-04-06 Air-fuel ratio controller of carburetor

Publications (1)

Publication Number Publication Date
JPS57165650A true JPS57165650A (en) 1982-10-12

Family

ID=12886020

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5140581A Pending JPS57165650A (en) 1981-04-06 1981-04-06 Air-fuel ratio controller of carburetor

Country Status (1)

Country Link
JP (1) JPS57165650A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61171866A (en) * 1985-01-28 1986-08-02 Daihatsu Motor Co Ltd Air-fuel ratio control device in carburetor
JPS62131940A (en) * 1985-12-03 1987-06-15 Mazda Motor Corp Air-fuel ratio control device for engine

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5218534A (en) * 1975-08-05 1977-02-12 Nissan Motor Co Ltd Air fuel ration control system
JPS5598641A (en) * 1979-01-24 1980-07-26 Automob Antipollut & Saf Res Center Controlling device for volume ratio of air to fuel

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5218534A (en) * 1975-08-05 1977-02-12 Nissan Motor Co Ltd Air fuel ration control system
JPS5598641A (en) * 1979-01-24 1980-07-26 Automob Antipollut & Saf Res Center Controlling device for volume ratio of air to fuel

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61171866A (en) * 1985-01-28 1986-08-02 Daihatsu Motor Co Ltd Air-fuel ratio control device in carburetor
JPS62131940A (en) * 1985-12-03 1987-06-15 Mazda Motor Corp Air-fuel ratio control device for engine

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