JPS5692335A - Air/fuel ratio control device equipped with signal correction circuit during driving at elevated area - Google Patents

Air/fuel ratio control device equipped with signal correction circuit during driving at elevated area

Info

Publication number
JPS5692335A
JPS5692335A JP16861479A JP16861479A JPS5692335A JP S5692335 A JPS5692335 A JP S5692335A JP 16861479 A JP16861479 A JP 16861479A JP 16861479 A JP16861479 A JP 16861479A JP S5692335 A JPS5692335 A JP S5692335A
Authority
JP
Japan
Prior art keywords
circuit
elevated area
open
signal generation
generation circuit
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
JP16861479A
Other languages
Japanese (ja)
Other versions
JPS6038543B2 (en
Inventor
Eiji Uematsu
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 JP16861479A priority Critical patent/JPS6038543B2/en
Publication of JPS5692335A publication Critical patent/JPS5692335A/en
Publication of JPS6038543B2 publication Critical patent/JPS6038543B2/en
Expired legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE: To prevent fuel concentration by checking the opening of a control system during a driving at an elevated area regarding a device equipped with an "open" signal generation circuit which generates a signal to open a control system under prearranged conditions of engine parameters.
CONSTITUTION: The concentration of an exhaust gas component from an engine 1 is detected by means of an exhaust gas sensor 3 and the detected output is compared with a prearranged voltage VREF1 by a deviation detection circuit 4, so that a deviation is detected. This deviation output passes through a cut switch circuit SW and is integrated and pressure-divided by means of P-I signal generation circuit 5. Then it is overlapped to make P-I signal, controlling a mixed gas supply device 7 through a control signal generation circuit 8. At that time, when an "open" signal generation circuit 8 decides that the control system should be in "open" condition under prearranged engine parameter conditions, SW is in "off" position. However, when an elevated area detection circuit 10 decides that a vehicle in now running at an elevated area, it shuts off an output from the circuit 8 through a gate circuit 11, performing an ordinary return circulation control.
COPYRIGHT: (C)1981,JPO&Japio
JP16861479A 1979-12-25 1979-12-25 Air-fuel ratio control device with signal correction circuit when driving at high altitudes Expired JPS6038543B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16861479A JPS6038543B2 (en) 1979-12-25 1979-12-25 Air-fuel ratio control device with signal correction circuit when driving at high altitudes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16861479A JPS6038543B2 (en) 1979-12-25 1979-12-25 Air-fuel ratio control device with signal correction circuit when driving at high altitudes

Publications (2)

Publication Number Publication Date
JPS5692335A true JPS5692335A (en) 1981-07-27
JPS6038543B2 JPS6038543B2 (en) 1985-09-02

Family

ID=15871316

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16861479A Expired JPS6038543B2 (en) 1979-12-25 1979-12-25 Air-fuel ratio control device with signal correction circuit when driving at high altitudes

Country Status (1)

Country Link
JP (1) JPS6038543B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5830446A (en) * 1981-08-13 1983-02-22 Honda Motor Co Ltd Trouble detection device of air-fuel ratio feed-back control unit for internal combustion engine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5830446A (en) * 1981-08-13 1983-02-22 Honda Motor Co Ltd Trouble detection device of air-fuel ratio feed-back control unit for internal combustion engine
JPS6254982B2 (en) * 1981-08-13 1987-11-17 Honda Motor Co Ltd

Also Published As

Publication number Publication date
JPS6038543B2 (en) 1985-09-02

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