JPS57124055A - Air-fuel ratio control device for engine - Google Patents

Air-fuel ratio control device for engine

Info

Publication number
JPS57124055A
JPS57124055A JP1047381A JP1047381A JPS57124055A JP S57124055 A JPS57124055 A JP S57124055A JP 1047381 A JP1047381 A JP 1047381A JP 1047381 A JP1047381 A JP 1047381A JP S57124055 A JPS57124055 A JP S57124055A
Authority
JP
Japan
Prior art keywords
air
idling
fuel ratio
opened
engine
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
JP1047381A
Other languages
Japanese (ja)
Inventor
Kisaburo Mizuno
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.)
Toyota Motor Corp
Original Assignee
Toyota Motor Corp
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 Toyota Motor Corp filed Critical Toyota Motor Corp
Priority to JP1047381A priority Critical patent/JPS57124055A/en
Publication of JPS57124055A publication Critical patent/JPS57124055A/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
    • F02D41/14—Introducing closed-loop corrections
    • F02D41/1438—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor
    • F02D41/1486—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor with correction for particular operating conditions
    • F02D41/1488—Inhibiting the regulation

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)

Abstract

PURPOSE:To stabilize the operation of idling by intermitting the feedback control of the air-fuel ratio of air-fuel mixture for the operation of idling as supplying secondary air, and starting the feedback control of air-fuel ratio for the state of loaded operation. CONSTITUTION:When an engine is in idling operation, the state of operation is detected by a detecting means 42, and an electromagnetic interception valve 40 is opened. Consequently, secondary air is supplied into an exhaust manifold 4 from a port 38, and the excess air ratio of exhaust gas is risen over 1. An O2- sensor 32 detects the existence of oxygen in the exhaust gas continuously, and the supply of additional air is stopped by the non-operation command of a control device 36. Meanwhile, when a throttle valve 10 is opened from a regular idling position or an idling-up position even by a little, the valve 40 is opened, and a device 35 is operated by the command of the device 36 to supply air into a suction pipe 3 additionally.
JP1047381A 1981-01-27 1981-01-27 Air-fuel ratio control device for engine Pending JPS57124055A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1047381A JPS57124055A (en) 1981-01-27 1981-01-27 Air-fuel ratio control device for engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1047381A JPS57124055A (en) 1981-01-27 1981-01-27 Air-fuel ratio control device for engine

Publications (1)

Publication Number Publication Date
JPS57124055A true JPS57124055A (en) 1982-08-02

Family

ID=11751108

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1047381A Pending JPS57124055A (en) 1981-01-27 1981-01-27 Air-fuel ratio control device for engine

Country Status (1)

Country Link
JP (1) JPS57124055A (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52129833A (en) * 1976-04-23 1977-10-31 Nissan Motor Co Ltd Air fuel ratio controller
JPS5314227A (en) * 1976-07-24 1978-02-08 Toyota Motor Corp Internal combustion engine having catalytic converter
JPS55153835A (en) * 1979-05-16 1980-12-01 Gen Motors Corp System for controlling air fuel mixture for internal combustion engine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52129833A (en) * 1976-04-23 1977-10-31 Nissan Motor Co Ltd Air fuel ratio controller
JPS5314227A (en) * 1976-07-24 1978-02-08 Toyota Motor Corp Internal combustion engine having catalytic converter
JPS55153835A (en) * 1979-05-16 1980-12-01 Gen Motors Corp System for controlling air fuel mixture for internal combustion engine

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