| 摘要 |
PROBLEM TO BE SOLVED: To suppress poor lubrication and temperature rise in a power transmission device in a towed state of a vehicle including a mechanical oil pump driven by an engine and an electric oil pump in parallel with each other as the pumps for supplying an oil to the power transmission device transmitting an output of the engine to axles.SOLUTION: In a non-driving state (neutral range) of a power transmission device (S102), a target rotational frequency of an electric oil pump is calculated on the basis of an oil temperature (S104). When a vehicle speed is more than a prescribed value (S105), a vehicle may run while being towed, and oil supply from a mechanical oil pump may be stopped accompanying stop of an engine, so that the electric oil pump is driven to supply oil for lubrication and cooling to the power transmission device (S106). Further an operation time of the electric oil pump in the non-driving state, is limited to be a prescribed value or less to suppress battery consumption (S108, S110). |
