JPS54145818A - Air-fuel ratio control device - Google Patents

Air-fuel ratio control device

Info

Publication number
JPS54145818A
JPS54145818A JP5359378A JP5359378A JPS54145818A JP S54145818 A JPS54145818 A JP S54145818A JP 5359378 A JP5359378 A JP 5359378A JP 5359378 A JP5359378 A JP 5359378A JP S54145818 A JPS54145818 A JP S54145818A
Authority
JP
Japan
Prior art keywords
air
electromagnetic valve
ratio control
fuel ratio
sensor
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
JP5359378A
Other languages
Japanese (ja)
Inventor
Takeshige Tabuchi
Seietsu Yoshida
Yukihide Niimi
Masao Ito
Yoshiki Maruchi
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.)
Denso Corp
Original Assignee
NipponDenso 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 NipponDenso Co Ltd filed Critical NipponDenso Co Ltd
Priority to JP5359378A priority Critical patent/JPS54145818A/en
Publication of JPS54145818A publication Critical patent/JPS54145818A/en
Pending legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE: To control the quantity of air or fuel continuously and inexpensively and to enhance the precision of air-fuel ratio control by the use of electromagnetic valve.
CONSTITUTION: The air-fuel ratio control device is provided with the control circuit 10 which emits an airfuel ratio control signal as the output according to a signal of sensor 8 installed on between the lower flow of secondary air supply port 9 and the upper flow of threeelement catalyzer 6. Also the device is provided with the electromagnetic valve 13 which controls the quantity of secondary air continuously according to a control signal of the control circuit, the sensor 14 which detects the opening degree of electromagnetic valve 13, the comparator 130 which compares both outputs of said control circuit 10 (120) and the sensor 14 with each other, the integration circuit 140 which changes the integrating direction depending on the output of comparator and the amplifier circuit 150 which drives the electromagnetic valve 13.
COPYRIGHT: (C)1979,JPO&Japio
JP5359378A 1978-05-04 1978-05-04 Air-fuel ratio control device Pending JPS54145818A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5359378A JPS54145818A (en) 1978-05-04 1978-05-04 Air-fuel ratio control device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5359378A JPS54145818A (en) 1978-05-04 1978-05-04 Air-fuel ratio control device

Publications (1)

Publication Number Publication Date
JPS54145818A true JPS54145818A (en) 1979-11-14

Family

ID=12947166

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5359378A Pending JPS54145818A (en) 1978-05-04 1978-05-04 Air-fuel ratio control device

Country Status (1)

Country Link
JP (1) JPS54145818A (en)

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