| 摘要 |
PROBLEM TO BE SOLVED: To perform adequate operation-preparation and determination of completion of the operation-preparation prior to an operation request to an electric oil pump.SOLUTION: An electric oil pump 10 for supplying oil to at least a part (a clutch 4) of a transmission 3 is provided in parallel with a mechanical oil pump 7 which is driven by an engine 1 and supplies oil to each part of the transmission 3. Prior to an operation request to the electric oil pump 10, the electric oil pump 10 is rotated at a first operation-preparation rotational speed which is a very low speed until the rotational speed is satisfied. Thereafter, the electric oil pump 10 is rotated at a second operation-preparation rotational speed which is a relatively high speed, and when the rotational speed is satisfied, it is determined that the operation-preparation is completed. |
