| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a hydraulic control unit for a vehicle that can return quickly a revolution speed of an electric driven oil pump motor in a low speed condition to a necessary high speed area without delay when a running load of the vehicle is going to change. <P>SOLUTION: When the revolution speed of the electric driven oil pump is in a low speed range, it will be determined whether the condition where should control an actuator of a transformer axle occurs or not (step S14D from step S14B). When the affirmative determination is done in any step, the revolution speed of the electric driven oil pump is returned to the high speed range (step S14T) quickly from the low speed range. When the denied determination is done in every step, the revolution speed of the electric driven oil pump is maintained in the low speed range. <P>COPYRIGHT: (C)2004,JPO |
