Title:
HYDRAULIC PRESSURE CONTROL METHOD OF FRICTIONAL ENGAGING ELEMENT
Document Type and Number:
Japanese Patent JP2738200
Kind Code:
B2
Abstract:
PURPOSE: To provide a hydraulic pressure control method by which when an oil-feeding/discharging means is driven in a prescribed duty factor, the driving time thereof can be accurately determined.
CONSTITUTION: For example, consider the case where a solenoid valve 11 whose duty factor is controlled in a period of 50Hz (20msec) is operated for subjecting a hydraulic clutch 33 to play-filling operation, and thereafter the solenoid valve 11 is continuously driven in a duty factor D1 (35%). The play-filling time Tf (90msec) read in the step S60 is divided by 20msec, and the quotient 4 and the remainder time 10msec is obtained (step S61). Then, the duty factor Dc (50%) corresponding to the remainder time 10msec, and the duty factor Du (85%) obtained by adding 35% thereto are obtained (steps S62, and S63). After the solenoid valve 11 has been driven at the duty factor of 100% as many as 4 cycles, it is continuously driven at the duty factor of 85% as many as 1 cycle (steps S66, and S67) for carrying out play-filling operation.
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Inventors:
FUJITA KENJIRO
USUKI KATSUTOSHI
USUKI KATSUTOSHI
Application Number:
JP5251492A
Publication Date:
April 08, 1998
Filing Date:
March 11, 1992
Export Citation:
Assignee:
MITSUBISHI JIDOSHA KOGYO KK
International Classes:
F16H61/08; F16H61/06; (IPC1-7): F16H61/08
Domestic Patent References:
| JP1150056A | ||||
| JP6241460A |
Attorney, Agent or Firm:
Koji Nagato
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