| 摘要 |
<P>PROBLEM TO BE SOLVED: To make appropriate preparations for operation and determination on completion of the preparations for operation prior to a request for operation of a motor-driven oil pump to reduce time for the preparations for operation. <P>SOLUTION: The motor-driven oil pump 10 for supplying oil to at least a part (a clutch 4) of a transmission 3 is juxtaposed with a mechanical oil pump 7 driven by an engine 1 to supply oil to each part of the transmission 3. Prior to the request for operation of the motor-driven oil pump 10, the motor-driven oil pump 10 is rotated at a first extremely low speed rotational frequency for preparations for operation to replace oil in oil pipes 11, 12 governed by the motor-driven oil pump 10. Then, the motor-driven oil pump 10 is rotated at a second relatively high speed rotational frequency for preparations for operation and when an actual rotational frequency satisfies the second rotational frequency for preparations for operation, it is determined that the preparations for operation are completed. <P>COPYRIGHT: (C)2013,JPO&INPIT |
