JPS55137334A - Air-fuel return controller for internal cumbustion engine - Google Patents

Air-fuel return controller for internal cumbustion engine

Info

Publication number
JPS55137334A
JPS55137334A JP4301179A JP4301179A JPS55137334A JP S55137334 A JPS55137334 A JP S55137334A JP 4301179 A JP4301179 A JP 4301179A JP 4301179 A JP4301179 A JP 4301179A JP S55137334 A JPS55137334 A JP S55137334A
Authority
JP
Japan
Prior art keywords
sensor
resistance
signal
cpu4
exhaust gas
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
JP4301179A
Other languages
Japanese (ja)
Other versions
JPS638293B2 (en
Inventor
Shuichi Toki
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 JP4301179A priority Critical patent/JPS55137334A/en
Publication of JPS55137334A publication Critical patent/JPS55137334A/en
Publication of JPS638293B2 publication Critical patent/JPS638293B2/ja
Granted legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE: To correct the result operated at the digital computer to control air-fuel ratio at the expected value by providing the digital computer to operate fuel supplying rate and the exhaust gas sensor for oxygen condensation detecting in exhaust gas.
CONSTITUTION: As the O2 sensor signal processing circuit, the equivalent network of the O2 sensor 11 which is constituted of the inside resistance 111 and the inside electromotive force 112. The current flowing circuit 5 to the O2 sensor 11 is connected with the O2 sensor 11 and divide potential of the prescribed voltage +B by resistance. Output signal from the O2 sensor 11 is amplified at the signal amplifier 6 and output from said amplifier 6 is supplied to the interface 21 to be A/D-converted, and transfer the signal to CPU4. At the current flowing circuit 5, prescribed voltage +B is potentially divided by the resistance 51, 52 to flow electric current to the O2 sensor 11 through the resistance 53. CPU4 takes in O2 sensor output signal which is A/D-converted appropriately and affect return control operation by the program control.
COPYRIGHT: (C)1980,JPO&Japio
JP4301179A 1979-04-11 1979-04-11 Air-fuel return controller for internal cumbustion engine Granted JPS55137334A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4301179A JPS55137334A (en) 1979-04-11 1979-04-11 Air-fuel return controller for internal cumbustion engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4301179A JPS55137334A (en) 1979-04-11 1979-04-11 Air-fuel return controller for internal cumbustion engine

Publications (2)

Publication Number Publication Date
JPS55137334A true JPS55137334A (en) 1980-10-27
JPS638293B2 JPS638293B2 (en) 1988-02-22

Family

ID=12652035

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4301179A Granted JPS55137334A (en) 1979-04-11 1979-04-11 Air-fuel return controller for internal cumbustion engine

Country Status (1)

Country Link
JP (1) JPS55137334A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5713245A (en) * 1980-06-30 1982-01-23 Toyota Motor Corp Method of controlling air fuel ratio of internal combustion engine
JPS58217733A (en) * 1982-06-10 1983-12-17 Matsushita Electric Ind Co Ltd Fuel injection control method of internal-combustion method
JPS6035148A (en) * 1983-08-05 1985-02-22 Nippon Denso Co Ltd Air-fuel ratio control device
JPS6045749A (en) * 1983-08-22 1985-03-12 Japan Electronic Control Syst Co Ltd Air-fuel ratio learning controller of electronic fuel injection type internal-combustion engine
US7236083B2 (en) 2002-06-27 2007-06-26 National Institute Of Advanced Industrial Science And Technology Resistance type oxygen sensor and oxygen sensor device using it and air/fuel ratio control system
US7578974B2 (en) 2004-10-19 2009-08-25 National Institute Of Advanced Industrial Science And Technology Resistive type oxygen sensor and air/fuel ratio control system using it

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7438881B2 (en) 2020-07-29 2024-02-27 株式会社トプコン Leveling platform, surveying equipment and surveying system

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5294929A (en) * 1976-02-06 1977-08-10 Nissan Motor Co Ltd Digital system air-fuel ratio control device
JPS52135925A (en) * 1976-05-10 1977-11-14 Nissan Motor Co Ltd Air fuel ratio control equipment
JPS5340133A (en) * 1976-09-23 1978-04-12 Nippon Denso Co Ltd Fuel-air ratio feedback control system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5294929A (en) * 1976-02-06 1977-08-10 Nissan Motor Co Ltd Digital system air-fuel ratio control device
JPS52135925A (en) * 1976-05-10 1977-11-14 Nissan Motor Co Ltd Air fuel ratio control equipment
JPS5340133A (en) * 1976-09-23 1978-04-12 Nippon Denso Co Ltd Fuel-air ratio feedback control system

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5713245A (en) * 1980-06-30 1982-01-23 Toyota Motor Corp Method of controlling air fuel ratio of internal combustion engine
JPS6254980B2 (en) * 1980-06-30 1987-11-17 Toyota Motor Co Ltd
JPS58217733A (en) * 1982-06-10 1983-12-17 Matsushita Electric Ind Co Ltd Fuel injection control method of internal-combustion method
JPS6035148A (en) * 1983-08-05 1985-02-22 Nippon Denso Co Ltd Air-fuel ratio control device
JPS6045749A (en) * 1983-08-22 1985-03-12 Japan Electronic Control Syst Co Ltd Air-fuel ratio learning controller of electronic fuel injection type internal-combustion engine
US7236083B2 (en) 2002-06-27 2007-06-26 National Institute Of Advanced Industrial Science And Technology Resistance type oxygen sensor and oxygen sensor device using it and air/fuel ratio control system
US7578974B2 (en) 2004-10-19 2009-08-25 National Institute Of Advanced Industrial Science And Technology Resistive type oxygen sensor and air/fuel ratio control system using it

Also Published As

Publication number Publication date
JPS638293B2 (en) 1988-02-22

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