JPS5647810A - Electromagnetic valve driving circuit - Google Patents

Electromagnetic valve driving circuit

Info

Publication number
JPS5647810A
JPS5647810A JP12389379A JP12389379A JPS5647810A JP S5647810 A JPS5647810 A JP S5647810A JP 12389379 A JP12389379 A JP 12389379A JP 12389379 A JP12389379 A JP 12389379A JP S5647810 A JPS5647810 A JP S5647810A
Authority
JP
Japan
Prior art keywords
icoil
electromagnetic valve
switch
level
valve
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
JP12389379A
Other languages
Japanese (ja)
Inventor
Osamu Abe
Shiyouji Suda
Toshio Furuhashi
Taiji Hasegawa
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 JP12389379A priority Critical patent/JPS5647810A/en
Publication of JPS5647810A publication Critical patent/JPS5647810A/en
Pending legal-status Critical Current

Links

Landscapes

  • Magnetically Actuated Valves (AREA)
  • Flow Control (AREA)

Abstract

PURPOSE: To get rid of answer delay of an electromagnetic valve and perform precise control, by detecting and feeding back the value of a current flowing in a coil of the electromagnetic valve, and controlling a driving current of the electromagnetic valve.
CONSTITUTION: The switch is turned on in accordance with a signal Ti which instructs the open-valve, and a current Icoil flows in a driving coil of the electromagnetic valve. When Icoil reaches the level A, the comparator opertes, opens said switch and closes other switch. As a result, Icoil is reduced. When Icoil is reduced and reaches the level C, the comaprator operates once again, makes the switch operate so that Icoil is increased. After that, when Icoil reaches the level B, the switch is made to operate once again so as to reduce Icoil. Subsequently, the electromagnetic valve is driven in accordance with Icoil between the level A and the level B, which is set by utilizing the hysteresis of the open-valve and the close-valve.
COPYRIGHT: (C)1981,JPO&Japio
JP12389379A 1979-09-28 1979-09-28 Electromagnetic valve driving circuit Pending JPS5647810A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12389379A JPS5647810A (en) 1979-09-28 1979-09-28 Electromagnetic valve driving circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12389379A JPS5647810A (en) 1979-09-28 1979-09-28 Electromagnetic valve driving circuit

Publications (1)

Publication Number Publication Date
JPS5647810A true JPS5647810A (en) 1981-04-30

Family

ID=14871945

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12389379A Pending JPS5647810A (en) 1979-09-28 1979-09-28 Electromagnetic valve driving circuit

Country Status (1)

Country Link
JP (1) JPS5647810A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6239823U (en) * 1985-08-26 1987-03-10
CN103291384A (en) * 2013-06-06 2013-09-11 杭州和利时自动化有限公司 Driving circuit of electromagnetic valve

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5317833A (en) * 1976-07-31 1978-02-18 Japan Electronic Control Syst Device for actuating fuel injection electromagnetic valve

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5317833A (en) * 1976-07-31 1978-02-18 Japan Electronic Control Syst Device for actuating fuel injection electromagnetic valve

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6239823U (en) * 1985-08-26 1987-03-10
CN103291384A (en) * 2013-06-06 2013-09-11 杭州和利时自动化有限公司 Driving circuit of electromagnetic valve

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