Hydraulic control apparatus of vehicle and control method

Details Hydraulic control apparatus of vehicle and control method Hydraulic control apparatus of vehicle and control method

2005-04-19

2005-04-19

Bucci, David A. (Department: 3682)

Endless belt power transmission systems or components

Pulley with belt-receiving groove formed by drive faces on...

Fluid pressure actuator for adjustment of member

C417S350000

Reexamination Certificate

active

06881165

ABSTRACT:
A first hydraulic pump and a second hydraulic pump are respectively mounted to both ends of a rotary shaft in an electric motor, whereby it is possible to drive both of the first hydraulic pump and the second hydraulic pump by one electric motor. Since the electric motor is driven and controlled so as to have any higher rotational speed among a rotational speed of the first hydraulic pump for obtaining an amount of working fluid required in a hydraulic control circuit for a power steering apparatus and a rotational speed of the second hydraulic pump for obtaining an amount of working fluid required in a hydraulic control circuit for a power train by a hydraulic pump drive controlling portion, it is possible to necessarily and sufficiently secure the working fluids respectively required in the power steering hydraulic control circuit and the power train hydraulic control circuit which are independent from each other, by a little electric power consumption.

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