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发明授权
CN105848953B 液压操作式离合器 有权

液压操作式离合器
摘要：
本教导提供一种动力传递部件，包括摩擦离合器、储液器、用于致动所述离合器的液压油缸、马达和由所述马达同时驱动的第一泵及第二泵。所述第一泵与所述储液器和所述油缸流体联通。所述第一泵被配置为当所述马达沿第一方向旋转时向所述油缸提供液压流体。所述第二泵被联接到所述储液器，并且当所述输出轴沿所述第一方向旋转并且所述油缸和所述第二泵之间的压力差小于或等于预定压力差时向所述油缸提供液压流体。所述第二泵具有比所述第一泵更大的排量，并且被配置为以比所述第一泵更低的压力和更高的流量向所述油缸提供液压流体。
摘要（英）：

The present teachings provide for a power transmitting component including a friction clutch, a reservoir, a hydraulic ram to actuate the clutch, a motor, and first and second pumps simultaneously driven by the motor. The first pump is in fluid communication with the reservoir and the ram. The first pump is configured to provide hydraulic fluid to the ram when the motor rotates in a first direction. The second pump is coupled to the reservoir and provides hydraulic fluid to the ram when the output shaft rotates in the first direction and a pressure differential between the ram and the second pump is less than or equal to a predetermined pressure differential. The second pump has a displacement greater than the first pump and is configured to provide hydraulic fluid to the ram at a lower pressure and higher flow rate than the first pump.

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