JPS5614831A - Engine controlling device - Google Patents

Engine controlling device

Info

Publication number
JPS5614831A
JPS5614831A JP8823279A JP8823279A JPS5614831A JP S5614831 A JPS5614831 A JP S5614831A JP 8823279 A JP8823279 A JP 8823279A JP 8823279 A JP8823279 A JP 8823279A JP S5614831 A JPS5614831 A JP S5614831A
Authority
JP
Japan
Prior art keywords
solenoid
interrupted
actuator
holding
electromotive force
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
JP8823279A
Other languages
Japanese (ja)
Other versions
JPS5938425B2 (en
Inventor
Hiroatsu Tokuda
Seiji Suda
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 Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP8823279A priority Critical patent/JPS5938425B2/en
Publication of JPS5614831A publication Critical patent/JPS5614831A/en
Publication of JPS5938425B2 publication Critical patent/JPS5938425B2/en
Expired legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE: To enable to supply rewriting voltage to EAROM (read only memory capable of rewriting electrically) serving as memory, by providing a voltage supplying means for holding a counter electromotive force produced when current supply to a solenoid for driving an actuator is interrupted.
CONSTITUTION: Solenoid 200 for operating an actuator like an exciting coil associated with a solenoid valve for controlling the fuel injection rate of injector is connected at one end to positive electrode 116 of battery and grounded at the other end via resistance R202 end clamping Zener diode ZD202. Collector of transistor Tr206 is connected to the joint portion of R202 and solenoid 200, and the base is connected via R210 to the output terminal of control unit 212 in control circuit 70. Further, cathode of ZD204 is connected to EAROM122 via reverse-current preventing diode D214, and a voltage supplying means 220 for holding the counter electromotive force produced when current supply to solenoid 200 is interrupted is constituted by D214, capacitor 216 and ZD218.
COPYRIGHT: (C)1981,JPO&Japio
JP8823279A 1979-07-13 1979-07-13 engine control device Expired JPS5938425B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8823279A JPS5938425B2 (en) 1979-07-13 1979-07-13 engine control device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8823279A JPS5938425B2 (en) 1979-07-13 1979-07-13 engine control device

Publications (2)

Publication Number Publication Date
JPS5614831A true JPS5614831A (en) 1981-02-13
JPS5938425B2 JPS5938425B2 (en) 1984-09-17

Family

ID=13937112

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8823279A Expired JPS5938425B2 (en) 1979-07-13 1979-07-13 engine control device

Country Status (1)

Country Link
JP (1) JPS5938425B2 (en)

Also Published As

Publication number Publication date
JPS5938425B2 (en) 1984-09-17

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