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JPS5638540A - Controller for idling speed of engine - Google Patents

Controller for idling speed of engine

Info

Publication number
JPS5638540A
JPS5638540A JP11476979A JP11476979A JPS5638540A JP S5638540 A JPS5638540 A JP S5638540A JP 11476979 A JP11476979 A JP 11476979A JP 11476979 A JP11476979 A JP 11476979A JP S5638540 A JPS5638540 A JP S5638540A
Authority
JP
Japan
Prior art keywords
air
engine
fuel ratio
idling speed
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
JP11476979A
Other languages
Japanese (ja)
Inventor
Tokuichi Matsumoto
Kazumasa Nomura
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.)
Mazda Motor Corp
Original Assignee
Mazda Motor Corp
Toyo Kogyo 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 Mazda Motor Corp, Toyo Kogyo Co Ltd filed Critical Mazda Motor Corp
Priority to JP11476979A priority Critical patent/JPS5638540A/en
Publication of JPS5638540A publication Critical patent/JPS5638540A/en
Pending legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE: To properly control the idling speed of an engine by comparing the engine speed with a reference signal to control the bypassing secondary-air flow according to the difference.
CONSTITUTION: The signal from an O2 sensor 20 arranged in an exhaust pipe 4 of an engine 1 is inputted to an air-fuel ratio controlling circuit 21, which drives actuators 14 and 15 provided to main and slow air bleeds 12 and 13 in order to control so that the air-fuel ratio is a theoretical air-fuel ratio. Moreover, a bypassing secondary-air passage 16 having an actuator 17 is provided to a suction passage 2 downstream a throttle valve 7, and the signal from a sensor 18 for the speed of the engine 1 is inputted to the actuator 17 through an idling speed controlling circuit 19, which compares the signal from the sensor 18 with a reference value and integrates the difference in its integrating circuit in order to operate the actuator 17 according to the output, so that an air-fuel ratio corresponding to the idling speed is determined.
COPYRIGHT: (C)1981,JPO&Japio
JP11476979A 1979-09-06 1979-09-06 Controller for idling speed of engine Pending JPS5638540A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11476979A JPS5638540A (en) 1979-09-06 1979-09-06 Controller for idling speed of engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11476979A JPS5638540A (en) 1979-09-06 1979-09-06 Controller for idling speed of engine

Publications (1)

Publication Number Publication Date
JPS5638540A true JPS5638540A (en) 1981-04-13

Family

ID=14646222

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11476979A Pending JPS5638540A (en) 1979-09-06 1979-09-06 Controller for idling speed of engine

Country Status (1)

Country Link
JP (1) JPS5638540A (en)

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