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    • 9. 发明授权
    • Electric coolant pump control strategy for hybrid electric vehicles
    • 混合动力汽车电动冷却液泵控制策略
    • US06607142B1
    • 2003-08-19
    • US09705169
    • 2000-11-02
    • David Lee BoggsMark William PetersStephen John Kotre
    • David Lee BoggsMark William PetersStephen John Kotre
    • B60H102
    • B60K6/22F01P7/164F01P7/165F01P2003/027F01P2003/028F01P2023/00F01P2023/08F01P2025/08F01P2025/32F01P2025/33F01P2050/24F01P2050/30F01P2060/08Y10S903/903Y10S903/904
    • This invention relates to a hybrid electric vehicle component coolant control system and method. The coolant system has an electric pump to move coolant through a closed system including engine and motor components. Such components to be cooled can include any electric motors, power electronics, engine, and transmission. The preferred embodiment controls coolant flow to the vehicle engine and motor in a single closed loop. Vehicle components have temperature sensors that send temperature signals to an electric coolant pump duty cycle control strategy. The control strategy makes a determination of a duty cycle of the electric coolant pump as a function of the temperatures of vehicle components and orders the duty cycle of the electric pump. In the preferred configuration, engine temperature sensors can acquire either engine coolant temperature or engine cylinder head temperature. The preferred configuration includes a heater core in the coolant flow path connected between vehicle components and the electric coolant pump return, whereby passenger heating requests are facilitated. Several coolant flow paths among the vehicle components are possible including a parallel and series configuration. The control system can also use a rolling average filter routine connected between the temperature sensor for the motor and the control strategy to determine the average temperature of the motor.
    • 本发明涉及一种混合电动车辆部件冷却液控制系统及方法。 冷却剂系统具有电动泵,以通过包括发动机和电动机部件的封闭系统来移动冷却剂。 要冷却的这些部件可以包括任何电动机,电力电子设备,发动机和变速器。 优选实施例控制在单个闭合回路中到车辆发动机和电动机的冷却剂流。车辆部件具有将温度信号发送到电动冷却剂泵占空比控制策略的温度传感器。 控制策略确定电动冷却剂泵的占空比作为车辆部件温度的函数,并命令电动泵的占空比。在优选的结构中,发动机温度传感器可以获得发动机冷却液温度或发动机 气缸盖温度。 优选的配置包括连接在车辆部件和电动冷却剂泵返回之间的冷却剂流动路径中的加热器芯,由此促进乘客加热请求。 车辆部件中的几个冷却剂流动路径是可能的,包括平行和串联配置。 控制系统还可以使用连接在电机温度传感器和控制策略之间的滚动平均滤波程序来确定电机的平均温度。