JPS55137333A - Air-fuel ratio return control circuit - Google Patents

Air-fuel ratio return control circuit

Info

Publication number
JPS55137333A
JPS55137333A JP4301079A JP4301079A JPS55137333A JP S55137333 A JPS55137333 A JP S55137333A JP 4301079 A JP4301079 A JP 4301079A JP 4301079 A JP4301079 A JP 4301079A JP S55137333 A JPS55137333 A JP S55137333A
Authority
JP
Japan
Prior art keywords
fuel
air
sensor
control
control 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
JP4301079A
Other languages
Japanese (ja)
Other versions
JPS6213500B2 (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 JP4301079A priority Critical patent/JPS55137333A/en
Publication of JPS55137333A publication Critical patent/JPS55137333A/en
Publication of JPS6213500B2 publication Critical patent/JPS6213500B2/ja
Granted legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE: To improve responsibility at the control starting time by adding the circuit to make the apparent impedance of the sensor at the control starting time small.
CONSTITUTION: Output from the suction air rate sensor 3 to detect air rate which passes through the suction pipe 2 of the engine 1 is supplied to the control circuit 4. The control circuit 4 operates the required fuel injection to send control signal to the fuel adjusting device 5 and supply required amount of fuel to the suction pipe from the fuel injection valve 6. For return control of the fuel supplying device, the deviation between the output from the O2 sensor 8 to detect oxygen condensation in exhaust gas in the exhaust pipe 7 and the standard value is detected at the deviation detecting circuit 9 to generate control signal from the control circuit 4 corresponding to the deviation, so that fuel rate output at the fuel adjusting device 5 is corrected based on the control signal. Being thus constituted, air-fuel ratio of mixed air supplied to the engine 1 is maintained at the expected air-fuel ratio. The resistance is connected to the O2 sensor 8 in parallel at the control starting time to make the apparent impedence of the exhaust sensor small.
COPYRIGHT: (C)1980,JPO&Japio
JP4301079A 1979-04-11 1979-04-11 Air-fuel ratio return control circuit Granted JPS55137333A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4301079A JPS55137333A (en) 1979-04-11 1979-04-11 Air-fuel ratio return control circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4301079A JPS55137333A (en) 1979-04-11 1979-04-11 Air-fuel ratio return control circuit

Publications (2)

Publication Number Publication Date
JPS55137333A true JPS55137333A (en) 1980-10-27
JPS6213500B2 JPS6213500B2 (en) 1987-03-26

Family

ID=12652008

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4301079A Granted JPS55137333A (en) 1979-04-11 1979-04-11 Air-fuel ratio return control circuit

Country Status (1)

Country Link
JP (1) JPS55137333A (en)

Also Published As

Publication number Publication date
JPS6213500B2 (en) 1987-03-26

Similar Documents

Publication Publication Date Title
JPS57143136A (en) Method of controlling air fuel ratio of internal combustion engine
JPS562438A (en) Mixing ratio controller for internal combustion engine
JPS57165656A (en) Egr device of diesel engine
JPS55134731A (en) Controlling method of air-fuel ratio
JPS5788250A (en) Controller for air-fuel ratio of engine
JPS57104817A (en) Air quantity measuring apparatus for internal combustion engine
EP0207796A3 (en) Fuel control system for air-fuel mixture supply devices
JPS56126654A (en) Electronic controlled carburetor
JPS55137333A (en) Air-fuel ratio return control circuit
JPS55109733A (en) Acceleration increasing-rate control method in electronically-controlled fuel injector
JPS5638538A (en) Sensing method for adjusting condition of air-fuel ratio controller
JPS56129729A (en) Electronically controlled fuel injection system
JPS54144525A (en) Fuel-air ratio controller for internal combustion engine
JPS6424142A (en) Control method for internal combustion engine
JPS55137334A (en) Air-fuel return controller for internal cumbustion engine
JPS5776234A (en) Control method for air fuel ratio of internal combustion engine
JPS5797038A (en) Air-fuel ratio control apparatus
JPS54105610A (en) Secondary air supplying device for engine exhaust system
JPS55134730A (en) Controlling method of fuel for internal combustion engine
JPS56156433A (en) Air/fuel ratio control device
JPS5332233A (en) Exhaust gas re-circulation control means for electronically controlled fuel injection engine
JPS5614941A (en) Fuel atomization rate measuring device for internal combustion engine
JPS5618044A (en) Air-fuel ratio feedback control system for internal combustion engine
JPS566041A (en) Air-fuel ratio controlling device
JPS5647649A (en) Air-fuel mixture feeding apparatus for internal combustion engine