公开(公告)号：US09228655B2

公开(公告)日：2016-01-05

申请号：US14212259

申请日：2014-03-14

申请人： Hitachi Automotive Systems, Ltd.

发明人： Masahiko Wakairo ,  Naoki Okamoto

IPC分类号： F16H61/00

CPC分类号： F16H61/0025 ,  B60Y2300/22

摘要： 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.

摘要翻译： 控制装置和控制方法，其控制向向轴传递驱动力的动力传递装置供给油的电动油泵。 当车辆处于拉动状态时，控制装置将电动油泵的PWM控制中的PWM频率改变为较低的频率，当车速高时，当电源以高转速运行时，当 来自电动油泵的排出量大，或车内的噪音大时。 因此，可以减少泵的驱动噪声，或者可以减少在泵驱动电路中产生的热量和功率消耗。