Hydraulic control apparatus for vehicle and method thereof

Details Hydraulic control apparatus for vehicle and method thereof Hydraulic control apparatus for vehicle and method thereof

2006-03-28

2006-03-28

Ho, Ha (Department: 3681)

Planetary gear transmission systems or components

Fluid drive or control of planetary gearing

Control of differential planetary gearing

C475S090000, C475S120000

Reexamination Certificate

active

07018315

ABSTRACT:
A hydraulic control apparatus for a vehicle including an electric oil pump, a pump control portion which controls the electric oil pump, a hydraulic circuit portion which supplies a hydraulic pressure from the electric oil pump to an actuator of a transaxle of the vehicle, a hydraulic circuit control portion which outputs a control signal to the hydraulic circuit portion, and an oil pump rotation control portion which is provided in the pump control portion and which controls a rotational state of the electric oil pump according to a change in a control status of the hydraulic circuit control portion.

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