JPS57203829A - Solenoid operated valve driving circuit for internal- combustion engine - Google Patents

Solenoid operated valve driving circuit for internal- combustion engine

Info

Publication number
JPS57203829A
JPS57203829A JP8984181A JP8984181A JPS57203829A JP S57203829 A JPS57203829 A JP S57203829A JP 8984181 A JP8984181 A JP 8984181A JP 8984181 A JP8984181 A JP 8984181A JP S57203829 A JPS57203829 A JP S57203829A
Authority
JP
Japan
Prior art keywords
turned
voltage
transistor
output
terminal
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
JP8984181A
Other languages
Japanese (ja)
Other versions
JPS6347895B2 (en
Inventor
Yoshinobu Morimoto
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 JP8984181A priority Critical patent/JPS57203829A/en
Publication of JPS57203829A publication Critical patent/JPS57203829A/en
Publication of JPS6347895B2 publication Critical patent/JPS6347895B2/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
    • F02D41/20—Output circuits, e.g. for controlling currents in command coils

Abstract

PURPOSE:To enable to suck and to interrupt fuel ar high speed, by controlling a voltage loaded to an injection valve so as to be alwys amintained at a constant value in an initial driving stage of an injection valve, regardless of the voltage of a battery, and by maintaning the current of an injection valve at a constant value after an initial suction by the valve is completed. CONSTITUTION:When an injector driving signal is applied to a terminal A, an output in L level is generated from a comparator CP5 through an AND gate 1. On the other hand, an output from an CP3 is turned H, while a FF2 is triggered and its terminal Q is turned L to turn OFF a transistor Q3. Accordingly, a transistor Q2 is turned on by an output from a CP3, and a transistor Q1 is also turned on, to energize an injector 6. At this time, the potential of a point B is applied to the terminal of a non-inverted input of an OP AMP7, compared with a standard voltage E2. In case that the potential is higher than the voltage E2, a transistor Q1 is turned OFF by an output from an OP amplifier 7. With such an arrangement, the voltage applied to an injector 6 is maintained at a constant value at all times.
JP8984181A 1981-06-10 1981-06-10 Solenoid operated valve driving circuit for internal- combustion engine Granted JPS57203829A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8984181A JPS57203829A (en) 1981-06-10 1981-06-10 Solenoid operated valve driving circuit for internal- combustion engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8984181A JPS57203829A (en) 1981-06-10 1981-06-10 Solenoid operated valve driving circuit for internal- combustion engine

Publications (2)

Publication Number Publication Date
JPS57203829A true JPS57203829A (en) 1982-12-14
JPS6347895B2 JPS6347895B2 (en) 1988-09-26

Family

ID=13981982

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8984181A Granted JPS57203829A (en) 1981-06-10 1981-06-10 Solenoid operated valve driving circuit for internal- combustion engine

Country Status (1)

Country Link
JP (1) JPS57203829A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60243341A (en) * 1984-04-24 1985-12-03 テイーアールダブリユー・インコーポレーテツド Fuel jet apparatus using power converter
JPS6128734A (en) * 1984-07-17 1986-02-08 Nippon Denso Co Ltd Control device for fuel injection amount
JPH03275957A (en) * 1989-10-23 1991-12-06 Tohoku Tokushuko Kk Solenoid valve driving circuit

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5398517A (en) * 1977-02-08 1978-08-29 Nippon Soken Electroomagnetic valve driving device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5398517A (en) * 1977-02-08 1978-08-29 Nippon Soken Electroomagnetic valve driving device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60243341A (en) * 1984-04-24 1985-12-03 テイーアールダブリユー・インコーポレーテツド Fuel jet apparatus using power converter
JPS6128734A (en) * 1984-07-17 1986-02-08 Nippon Denso Co Ltd Control device for fuel injection amount
JPH0321741B2 (en) * 1984-07-17 1991-03-25 Nippon Denso Kk
JPH03275957A (en) * 1989-10-23 1991-12-06 Tohoku Tokushuko Kk Solenoid valve driving circuit

Also Published As

Publication number Publication date
JPS6347895B2 (en) 1988-09-26

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