JPS54126823A - Air fuel ratio controller for internal combustion engine - Google Patents

Air fuel ratio controller for internal combustion engine

Info

Publication number
JPS54126823A
JPS54126823A JP1592178A JP1592178A JPS54126823A JP S54126823 A JPS54126823 A JP S54126823A JP 1592178 A JP1592178 A JP 1592178A JP 1592178 A JP1592178 A JP 1592178A JP S54126823 A JPS54126823 A JP S54126823A
Authority
JP
Japan
Prior art keywords
voltage
fuel ratio
reference voltage
delay circuit
air fuel
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.)
Granted
Application number
JP1592178A
Other languages
Japanese (ja)
Other versions
JPS6156413B2 (en
Inventor
Toshio Shiotani
Shin Narasaka
Yuji Fujimura
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.)
Honda Motor Co Ltd
Original Assignee
Honda Motor 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 Honda Motor Co Ltd filed Critical Honda Motor Co Ltd
Priority to JP1592178A priority Critical patent/JPS54126823A/en
Publication of JPS54126823A publication Critical patent/JPS54126823A/en
Publication of JPS6156413B2 publication Critical patent/JPS6156413B2/ja
Granted legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE: To stably control the air fuel ratio when comparing the output voltage of an oxygen sensor with a reference voltage to convert the output voltage into a signal of high or low level to control the quantity of supplied fuel or air, by providing delay circuits of different lag times corresponding to the high and low levels.
CONSTITUTION: The reference voltage Vset is set to be a voltage V2 which is not affected by the deterioration of the oxygen sensor 1. A first delay circuit is composed of a resistor 4, a capacitor 5 and an amplifier 8 to eliminate noises and obtain the same characteristics as when the reference voltage Vset of a comparator circuit is set to be a high voltage V1 corresponding to a high purifying ratio althought the reference voltage is actually set to be low voltage V2. The lag time of the first delay circuit is set to be 200 milliseconds, for example. A second delay circuit is composed of a capacitor 9, a resistor 10 and an amplifier 12 to prevent the wrong control due to noises. The lag time of the second delay circuit is set to be 5 milliseconds, for example. The lag times of the delay circuits are different from each other depending on the high and low levels. Thus, the air fuel ratio is stably controlled.
COPYRIGHT: (C)1979,JPO&Japio
JP1592178A 1978-02-16 1978-02-16 Air fuel ratio controller for internal combustion engine Granted JPS54126823A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1592178A JPS54126823A (en) 1978-02-16 1978-02-16 Air fuel ratio controller for internal combustion engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1592178A JPS54126823A (en) 1978-02-16 1978-02-16 Air fuel ratio controller for internal combustion engine

Publications (2)

Publication Number Publication Date
JPS54126823A true JPS54126823A (en) 1979-10-02
JPS6156413B2 JPS6156413B2 (en) 1986-12-02

Family

ID=11902237

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1592178A Granted JPS54126823A (en) 1978-02-16 1978-02-16 Air fuel ratio controller for internal combustion engine

Country Status (1)

Country Link
JP (1) JPS54126823A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0742589A (en) * 1993-07-27 1995-02-10 Nippondenso Co Ltd Air-fuel ratio control device for internal combustion engine

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6363898A (en) * 1986-09-01 1988-03-22 三井建設株式会社 Reinforcing material for concrete lining
JPH0448322U (en) * 1990-08-30 1992-04-24

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0742589A (en) * 1993-07-27 1995-02-10 Nippondenso Co Ltd Air-fuel ratio control device for internal combustion engine

Also Published As

Publication number Publication date
JPS6156413B2 (en) 1986-12-02

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