JPS56138436A - Control method of idling rotary speed - Google Patents

Control method of idling rotary speed

Info

Publication number
JPS56138436A
JPS56138436A JP4035880A JP4035880A JPS56138436A JP S56138436 A JPS56138436 A JP S56138436A JP 4035880 A JP4035880 A JP 4035880A JP 4035880 A JP4035880 A JP 4035880A JP S56138436 A JPS56138436 A JP S56138436A
Authority
JP
Japan
Prior art keywords
input
idling
rotary speed
pulse
signal
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
JP4035880A
Other languages
Japanese (ja)
Inventor
Tokuo Kosuge
Takeshi Atago
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 JP4035880A priority Critical patent/JPS56138436A/en
Publication of JPS56138436A publication Critical patent/JPS56138436A/en
Pending legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE: To obtain adequate air-fuel ratio to an engine at its idling speed and increase stability of engine running for the engine where its air-fuel ratio is feedback controlled, by stopping operation of feedback control for a given period of time at idling operation.
CONSTITUTION: Signals from a rotary speed detector 4 and reference rotary speed setter circuit 6 are input to a comparator 7 in a control circuit 30. Its deviation output signal B is input to a pulse converter 13 via a selector switch 9 and amplifier circuit 11 and pulse converted by a signal input from a pulse generator 12. Then its pulse signal H controls an air-fuel ratio controller 5 with an actuator 2. And to the selector switch 9 a signal of an idling state detector 14 is being input through a timer 8, then at idling operation the control circuit can be cut off by selecting the switch 9 for a given period of time.
COPYRIGHT: (C)1981,JPO&Japio
JP4035880A 1980-03-31 1980-03-31 Control method of idling rotary speed Pending JPS56138436A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4035880A JPS56138436A (en) 1980-03-31 1980-03-31 Control method of idling rotary speed

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4035880A JPS56138436A (en) 1980-03-31 1980-03-31 Control method of idling rotary speed

Publications (1)

Publication Number Publication Date
JPS56138436A true JPS56138436A (en) 1981-10-29

Family

ID=12578408

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4035880A Pending JPS56138436A (en) 1980-03-31 1980-03-31 Control method of idling rotary speed

Country Status (1)

Country Link
JP (1) JPS56138436A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6078958U (en) * 1983-11-08 1985-06-01 日本電子機器株式会社 Internal combustion engine idle speed control device
JPS6196153A (en) * 1984-10-11 1986-05-14 ローベルト・ボツシユ・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング Method and apparatus for controlling number of rotations of internal combustion engine
US4708109A (en) * 1985-07-09 1987-11-24 Nippondenso Co., Ltd. Apparatus for controlling an idle speed of an internal combustion engine

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6078958U (en) * 1983-11-08 1985-06-01 日本電子機器株式会社 Internal combustion engine idle speed control device
JPS6196153A (en) * 1984-10-11 1986-05-14 ローベルト・ボツシユ・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング Method and apparatus for controlling number of rotations of internal combustion engine
US4708109A (en) * 1985-07-09 1987-11-24 Nippondenso Co., Ltd. Apparatus for controlling an idle speed of an internal combustion engine

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