JPS57193741A - Position detector of throttle valve - Google Patents

Position detector of throttle valve

Info

Publication number
JPS57193741A
JPS57193741A JP7791581A JP7791581A JPS57193741A JP S57193741 A JPS57193741 A JP S57193741A JP 7791581 A JP7791581 A JP 7791581A JP 7791581 A JP7791581 A JP 7791581A JP S57193741 A JPS57193741 A JP S57193741A
Authority
JP
Japan
Prior art keywords
throttle valve
rotor
shaft
light
photocoupler
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
JP7791581A
Other languages
Japanese (ja)
Other versions
JPH0141819B2 (en
Inventor
Takeshi Tamura
Seiji Ishii
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 JP7791581A priority Critical patent/JPS57193741A/en
Publication of JPS57193741A publication Critical patent/JPS57193741A/en
Publication of JPH0141819B2 publication Critical patent/JPH0141819B2/ja
Granted 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
    • F02D41/24—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means
    • F02D41/26—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using computer, e.g. microprocessor
    • F02D41/28—Interface circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)

Abstract

PURPOSE:To perform position detection of high reliability without hysteresis for a throttle valve, by securing a rotor to a shaft of the throttle valve, mounting a reflection mirror to the rotor and providing light emitting and receiving units and photocoupler at a face-to-face position to said reflecting mirror. CONSTITUTION:Voltage is applied across a power source terminal 9 and earth terminal 10 to emit light from a light emitting unit 15a of a photocoupler 15, and the light is refelcted by a reflecting mirror 14, mounted to a rotor 13, at a position of a throttle valve shaft 1 under an idling condition, if a light receiving unit 15b is existent within a range of luminous flux 16, to output an ON signal from an output terminal 11. When the shaft 1 is angularly displaced to the direction of increasing a rotary speed, the reflected luminous flux 16 is amplified to the displacement of double angle and deflected out of the light receiving unit 15b. Accordingly, hysteresis is eliminated, and chattering from vibration is removed, further position detection of high reliability can be performed for a throttle valve because of contactlessness.
JP7791581A 1981-05-22 1981-05-22 Position detector of throttle valve Granted JPS57193741A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7791581A JPS57193741A (en) 1981-05-22 1981-05-22 Position detector of throttle valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7791581A JPS57193741A (en) 1981-05-22 1981-05-22 Position detector of throttle valve

Publications (2)

Publication Number Publication Date
JPS57193741A true JPS57193741A (en) 1982-11-29
JPH0141819B2 JPH0141819B2 (en) 1989-09-07

Family

ID=13647363

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7791581A Granted JPS57193741A (en) 1981-05-22 1981-05-22 Position detector of throttle valve

Country Status (1)

Country Link
JP (1) JPS57193741A (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4888957A (en) * 1972-02-23 1973-11-21
JPS51107536U (en) * 1975-02-26 1976-08-27
JPS5210229U (en) * 1975-07-09 1977-01-24

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5210229B2 (en) * 1971-08-31 1977-03-22

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4888957A (en) * 1972-02-23 1973-11-21
JPS51107536U (en) * 1975-02-26 1976-08-27
JPS5210229U (en) * 1975-07-09 1977-01-24

Also Published As

Publication number Publication date
JPH0141819B2 (en) 1989-09-07

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