Automotive radiator cooling system
    1.
    发明授权
    Automotive radiator cooling system 失效
    汽车散热器散热系统

    公开(公告)号:US4941437A

    公开(公告)日:1990-07-17

    申请号:US209636

    申请日:1988-06-21

    摘要: An automotive radiator cooling system has a radiator cooling fan driven by a hydraulic motor actuated by a pressurized fluid fed through a hydraulic circuit from an engine-driven hydraulic pump. A bypass line extends in bypassing relationship to the hydraulic motor and has ends connected to the circuit upstream and downstream of the hydraulic motor, respectively. A check valve is provided in the bypass line and is operative to allow a flow of the fluid from a reservoir through the bypass line back into a part of the circuit upstream of the motor only when a pressure drop takes place in that part of the circuit due to free rotation of the cooling fan, and thus of the motor, independently of the drive by the hydraulic pump. The backward flow of the fluid is operative to compensate for the pressure drop to prevent the occurrence of cavitation in the circuit upstream of the motor. Desirably, the bypass line is incorporated into the housing of the hydraulic motor.

    摘要翻译: 汽车散热器冷却系统具有由液压马达驱动的散热器冷却风扇,其由通过来自发动机驱动液压泵的液压回路供给的加压流体致动。 旁路管线以旁路关系延伸到液压马达,并且分别具有连接到液压马达上游和下游的回路的端部。 止回阀设置在旁通管路中,并且用于允许流体从储存器通过旁路管流回到电动机上游的一部分电路中,只有当电路的该部分发生压降时 由于冷却风扇的自由旋转,因此与液压泵的驱动无关。 流体的向后流动可用于补偿压降,以防止在马达上游的回路中产生气穴。 理想地,旁通管线被并入液压马达的壳体中。