JPS57126526A - Electronically-controlled fuel injector - Google Patents

Electronically-controlled fuel injector

Info

Publication number
JPS57126526A
JPS57126526A JP1229881A JP1229881A JPS57126526A JP S57126526 A JPS57126526 A JP S57126526A JP 1229881 A JP1229881 A JP 1229881A JP 1229881 A JP1229881 A JP 1229881A JP S57126526 A JPS57126526 A JP S57126526A
Authority
JP
Japan
Prior art keywords
hot
flow meter
processing circuit
throttle valve
opening degree
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
JP1229881A
Other languages
Japanese (ja)
Inventor
Yutaka Tsuneoka
Koichi Fujiwara
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.)
NIHON DENSHI KIKI KK
Hitachi Unisia Automotive Ltd
Original Assignee
NIHON DENSHI KIKI KK
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 NIHON DENSHI KIKI KK, Japan Electronic Control Systems Co Ltd filed Critical NIHON DENSHI KIKI KK
Priority to JP1229881A priority Critical patent/JPS57126526A/en
Publication of JPS57126526A publication Critical patent/JPS57126526A/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
    • F02D41/18—Circuit arrangements for generating control signals by measuring intake air flow
    • F02D41/187—Circuit arrangements for generating control signals by measuring intake air flow using a hot wire flow sensor

Abstract

PURPOSE:To maintain an air fuel ratio control function even if a hot wire snap, by providing a switch means for supplying a signal processing circuit with alternative one of the output signals of a throttle valve opening degree detector and a hot-wire flow meter which finds out the intake quantity of an internal combustion engine. CONSTITUTION:An electronically-controlled fuel injector comprises a throttle valve opening degree detector 2 and a hot-wire flow meter 1 which functions as an intake quantity detection means. The output signals of the flow meter 1 and the detector 2 are alternatively applied to a signal processing circuit 7 through a switch 6. When the output level of the hot-wire flow meter 1 is abnormal, the output signal of the throttle valve opening degree detector 2 is applied to the signal processing circuit 7. For that reason, an air fuel ratio control function is maintained even if the hot-wire flow meter 1 becomes defective.
JP1229881A 1981-01-30 1981-01-30 Electronically-controlled fuel injector Pending JPS57126526A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1229881A JPS57126526A (en) 1981-01-30 1981-01-30 Electronically-controlled fuel injector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1229881A JPS57126526A (en) 1981-01-30 1981-01-30 Electronically-controlled fuel injector

Publications (1)

Publication Number Publication Date
JPS57126526A true JPS57126526A (en) 1982-08-06

Family

ID=11801414

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1229881A Pending JPS57126526A (en) 1981-01-30 1981-01-30 Electronically-controlled fuel injector

Country Status (1)

Country Link
JP (1) JPS57126526A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4881501A (en) * 1988-02-03 1989-11-21 Nissan Motor Co., Ltd. Diesel engine having shaped flame dispersing recess in piston crown

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5549540A (en) * 1978-10-04 1980-04-10 Hitachi Ltd Electronic fuel injection device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5549540A (en) * 1978-10-04 1980-04-10 Hitachi Ltd Electronic fuel injection device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4881501A (en) * 1988-02-03 1989-11-21 Nissan Motor Co., Ltd. Diesel engine having shaped flame dispersing recess in piston crown

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