JPS57186041A - Control method of idle speed in engine - Google Patents

Control method of idle speed in engine

Info

Publication number
JPS57186041A
JPS57186041A JP7080881A JP7080881A JPS57186041A JP S57186041 A JPS57186041 A JP S57186041A JP 7080881 A JP7080881 A JP 7080881A JP 7080881 A JP7080881 A JP 7080881A JP S57186041 A JPS57186041 A JP S57186041A
Authority
JP
Japan
Prior art keywords
speed
idle
correction
nidle
nref
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
JP7080881A
Other languages
Japanese (ja)
Inventor
Toshio Ishii
Yasunori Mori
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP7080881A priority Critical patent/JPS57186041A/en
Publication of JPS57186041A publication Critical patent/JPS57186041A/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
    • F02D41/08—Introducing corrections for particular operating conditions for idling

Abstract

PURPOSE:To perform operational transfer of an engine smoothly to an optimum idle speed, in idle speed control, by storing a control quantity under an idle condition and resetting a speed of the engine to the stored control quantity when the speed is decreased from another condition to reach a prescribed level. CONSTITUTION:Output is detected by an idle SW148, if a throttle valve is left as opened, bypass air correction is stored as zero to a RAM106 by a CPU102. When a rotary speed increases to exceed an idle condition, and the idle SW148 is closed again, if the throttle valve is closed, a decreasing speed N and target value NIDLE are compared, and a correction quantity of bypass air is stored as a memory value at N <= NIDLE to prevent the speed from largely lowering from an optimum idle speed NREF. On the other hand, at N > NIDLE, N and NREF are compared to adjust a certain value to the preceding correction of bypass air quantity and obtain a new correction amount. Further if the N reaches the NREF by correction of the memory value, new correction is performed.
JP7080881A 1981-05-13 1981-05-13 Control method of idle speed in engine Pending JPS57186041A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7080881A JPS57186041A (en) 1981-05-13 1981-05-13 Control method of idle speed in engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7080881A JPS57186041A (en) 1981-05-13 1981-05-13 Control method of idle speed in engine

Publications (1)

Publication Number Publication Date
JPS57186041A true JPS57186041A (en) 1982-11-16

Family

ID=13442229

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7080881A Pending JPS57186041A (en) 1981-05-13 1981-05-13 Control method of idle speed in engine

Country Status (1)

Country Link
JP (1) JPS57186041A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58143147A (en) * 1982-02-18 1983-08-25 Toyota Motor Corp Deceleration control method of internal-combustion engine
JPS59120750A (en) * 1982-12-28 1984-07-12 Hitachi Ltd Device for controlling idling number of revolution
JPS59176446A (en) * 1983-03-26 1984-10-05 Honda Motor Co Ltd Method of controlling rotational frequency of internal- combustion engine
JPS59218340A (en) * 1983-05-27 1984-12-08 Mazda Motor Corp Idle rotation control device of engine
JPH0256834U (en) * 1988-10-17 1990-04-24

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58143147A (en) * 1982-02-18 1983-08-25 Toyota Motor Corp Deceleration control method of internal-combustion engine
JPH0522060B2 (en) * 1982-02-18 1993-03-26 Toyota Motor Co Ltd
JPS59120750A (en) * 1982-12-28 1984-07-12 Hitachi Ltd Device for controlling idling number of revolution
JPS59176446A (en) * 1983-03-26 1984-10-05 Honda Motor Co Ltd Method of controlling rotational frequency of internal- combustion engine
JPH0336144B2 (en) * 1983-03-26 1991-05-30 Honda Motor Co Ltd
JPS59218340A (en) * 1983-05-27 1984-12-08 Mazda Motor Corp Idle rotation control device of engine
JPH0448934B2 (en) * 1983-05-27 1992-08-10 Mazda Motor
JPH0256834U (en) * 1988-10-17 1990-04-24

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