Invention Grant
US09228655B2 Control apparatus and control method for vehicle electric oil pump 有权
车用电动油泵控制装置及控制方法

Control apparatus and control method for vehicle electric oil pump
Abstract:
A control apparatus and a control method that controls an electric oil pump that supplies oil to a power transmission device transmitting a drive force to an axle. The control apparatus changes a PWM frequency in a PWM control of the electric oil pump to a lower frequency, when a vehicle is in a pulled state, when a vehicle speed is high, when a power source is operated at a high rotational speed, when a discharge amount from the electric oil pump is large, or when a noise in a vehicle interior is large. Thus, a drive noise of the pump can be reduced, or the amount of heat generated in the pump drive circuit and power consumption can be reduced.
Public/Granted literature
Information query
Patent Agency Ranking
0/0