JPS57193743A - Oxygen sensor receiving device - Google Patents

Oxygen sensor receiving device

Info

Publication number
JPS57193743A
JPS57193743A JP7980581A JP7980581A JPS57193743A JP S57193743 A JPS57193743 A JP S57193743A JP 7980581 A JP7980581 A JP 7980581A JP 7980581 A JP7980581 A JP 7980581A JP S57193743 A JPS57193743 A JP S57193743A
Authority
JP
Japan
Prior art keywords
output
voltage
excess
excess 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.)
Pending
Application number
JP7980581A
Other languages
Japanese (ja)
Inventor
Setsuhiro Shimomura
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP7980581A priority Critical patent/JPS57193743A/en
Publication of JPS57193743A publication Critical patent/JPS57193743A/en
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/14—Introducing closed-loop corrections
    • F02D41/1438—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor
    • F02D41/1477—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the regulation circuit or part of it,(e.g. comparator, PI regulator, output)
    • F02D41/148—Using a plurality of comparators

Abstract

PURPOSE:To arrange a rate of excess air to 1, in air-fuel ratio control, by providing an FF circuit in which output of an O2 sensor is compared with the first reference voltage, if higher, assumed as excess fuel, and compared with the second reference voltage, if lower, assumed as excess air. CONSTITUTION:Output (a) of an O2 sensor 1 is voltage amplified to become a signal (c) to charge capacitors 4, 5 through diodes 6, 7. The capacitor 4 is connected with its one end to a power source Vcc and charged to voltage (d) higher by a voltage drop of the diode 6, while the capacitor 5 is connected with its one end to the earth and charged to constant voltage (e). In a comparator 8, if c>d, a positive pulse (h) is input to a set terminal s of an FF16, while in a comparator 9, if c<e, a positive pulse (i) is input to a reset terminal R. As a result, output (j) from the FF16 is reduced with delay times Tr, Tf at H L or L H of the sensor output (a), further reduced with a degree of unbalance. Accordingly, if fuel control is performed by the output (j), excess air and excess fuel are almost balanced, and a rate of excess air can be obtained to 1.0.
JP7980581A 1981-05-25 1981-05-25 Oxygen sensor receiving device Pending JPS57193743A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7980581A JPS57193743A (en) 1981-05-25 1981-05-25 Oxygen sensor receiving device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7980581A JPS57193743A (en) 1981-05-25 1981-05-25 Oxygen sensor receiving device

Publications (1)

Publication Number Publication Date
JPS57193743A true JPS57193743A (en) 1982-11-29

Family

ID=13700429

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7980581A Pending JPS57193743A (en) 1981-05-25 1981-05-25 Oxygen sensor receiving device

Country Status (1)

Country Link
JP (1) JPS57193743A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2594890A1 (en) * 1986-02-25 1987-08-28 Renault METHOD AND SYSTEM FOR ELECTRONIC INJECTION WITH L-PROBE REGULATION FOR INTERNAL COMBUSTION ENGINE

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5525531A (en) * 1978-08-10 1980-02-23 Toyota Motor Corp Feedback type air-fuel ratio controlling apparatus

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5525531A (en) * 1978-08-10 1980-02-23 Toyota Motor Corp Feedback type air-fuel ratio controlling apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2594890A1 (en) * 1986-02-25 1987-08-28 Renault METHOD AND SYSTEM FOR ELECTRONIC INJECTION WITH L-PROBE REGULATION FOR INTERNAL COMBUSTION ENGINE

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