JPS5685542A - Feed-back control circuit of air-fuel ratio control device - Google Patents

Feed-back control circuit of air-fuel ratio control device

Info

Publication number
JPS5685542A
JPS5685542A JP16257179A JP16257179A JPS5685542A JP S5685542 A JPS5685542 A JP S5685542A JP 16257179 A JP16257179 A JP 16257179A JP 16257179 A JP16257179 A JP 16257179A JP S5685542 A JPS5685542 A JP S5685542A
Authority
JP
Japan
Prior art keywords
feed
sensor
time
back control
ref1
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
JP16257179A
Other languages
Japanese (ja)
Other versions
JPS6055689B2 (en
Inventor
Tatsumi Sunaga
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 Unisia Automotive Ltd
Original Assignee
Japan Electronic Control Systems 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 Japan Electronic Control Systems Co Ltd filed Critical Japan Electronic Control Systems Co Ltd
Priority to JP16257179A priority Critical patent/JPS6055689B2/en
Publication of JPS5685542A publication Critical patent/JPS5685542A/en
Publication of JPS6055689B2 publication Critical patent/JPS6055689B2/en
Expired legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE: To work for stabilization of the engine rotation at the feed-back starting time and for optimum feed-back control by level shifting one of two comparison reference voltage for the exhaust gas sensor signals at the time of feed-back control starting and down time.
CONSTITUTION: When at the feed-back starting time and down time Vref1 of two comparison reference voltage Vref2, Vref1 is level shifted by such a portion as VP, at the moment of feed-back starting and until the internal impedance R of the sensor 3 becomes smaller compared with resistance RS the low level of electromotive force VS of the sensor 3 so big as about 100W400mV and the correction can be made lest biased feed-back control should be done. Like this, in a fixed period T1 from a time t1 until the sensor 3 generates the stabilied output, by controlling the level of the reference voltage Vref1 the optimal feed-back control corresponding to the activation speed of the sensor 3 can be made possible.
COPYRIGHT: (C)1981,JPO&Japio
JP16257179A 1979-12-14 1979-12-14 Air-fuel ratio controller feedback control circuit Expired JPS6055689B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16257179A JPS6055689B2 (en) 1979-12-14 1979-12-14 Air-fuel ratio controller feedback control circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16257179A JPS6055689B2 (en) 1979-12-14 1979-12-14 Air-fuel ratio controller feedback control circuit

Publications (2)

Publication Number Publication Date
JPS5685542A true JPS5685542A (en) 1981-07-11
JPS6055689B2 JPS6055689B2 (en) 1985-12-06

Family

ID=15757110

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16257179A Expired JPS6055689B2 (en) 1979-12-14 1979-12-14 Air-fuel ratio controller feedback control circuit

Country Status (1)

Country Link
JP (1) JPS6055689B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6299584A (en) * 1985-10-26 1987-05-09 トステム株式会社 Bay window

Also Published As

Publication number Publication date
JPS6055689B2 (en) 1985-12-06

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