Solenoid valve control system

Details Solenoid valve control system Solenoid valve control system

1992-12-09

1995-09-12

Pellinen, A. D.

Electricity: electrical systems and devices

Control circuits for electromagnetic devices

Systems for magnetizing, demagnetizing, or controlling the...

H01H 4702

Patent

active

054502705

ABSTRACT:
A solenoid valve control system controlling a solenoid valve which changes a solenoid valve state between an opened state and a closed state by applying pulsed electric power thereto. The solenoid valve control system includes an ammeter for detecting a current value applied to the solenoid and a control device for controlling electric power supplied to the solenoid. The control device has a duty control section which controls an ON-OFF ratio of pulsed electric power repeatingly applied to the solenoid and a correcting section which corrects an output from the duty control section according to the current value detected by the ammeter. Therefore, the line pressure is kept at a precise target value.

REFERENCES:
patent: 3946285 (1976-03-01), Beery et al.
patent: 4667117 (1987-05-01), Nebgen et al.
patent: 4745514 (1988-05-01), Takeshima et al.
patent: 4823825 (1989-04-01), Buechl
patent: 4978865 (1990-12-01), Hartmann et al.
patent: 5182517 (1993-01-01), Thelen et al.
"Nissan Service Manual, No. 578", pp. C-27-C-29, (1987).

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