| 摘要 |
An oil supply device (1) is equipped with: a main pump (5) driven by an engine (E) and capable of supplying oil to an automatic transmission mechanism (6) and an oil pressure control valve (7); an electric motor (M); a sub-pump (11) that is driven by the electric motor (M) and that boosts the pressure of a portion of the oil discharged from the main pump (5), and then supplies this oil to the oil pressure control valve (7); and a motor controller (12) that controls the driving of the electric motor (M) on the basis of the pressure of the oil supplied to the automatic transmission mechanism (6). When the pressure of the oil supplied to the automatic transmission mechanism (6) is less than a prescribed pressure, the motor controller (12) performs a control whereby the sub-pump (11) is driven by the electric motor (M) and the pressure of a portion of the oil discharged from the main pump (5) is boosted to equal to or higher than the prescribed pressure, and then is supplied to the oil pressure control valve (7). When the pressure of the oil supplied to the automatic transmission mechanism (6) is equal to or higher than the prescribed pressure, the motor controller performs a control whereby the driving of the sub-pump (11) is stopped. |
