METHOD AND SYSTEM FOR ENGINE COOLING SYSTEM CONTROL
    33.
    发明申请
    METHOD AND SYSTEM FOR ENGINE COOLING SYSTEM CONTROL 审中-公开
    发动机冷却系统控制方法与系统

    公开(公告)号:US20160186645A1

    公开(公告)日:2016-06-30

    申请号:US14583366

    申请日:2014-12-26

    Abstract: Methods and systems are providing for improving engine coolant level estimation to reduce engine overheating. The level of fluid in a coolant overflow reservoir is inferred based on the fluid level in a hollow vertical standpipe fluidically coupled to the reservoir at top and bottom locations, while the fluid level in the standpipe is estimated based on echo times of an ultrasonic signal transmitted by a sensor positioned in a recess at the bottom of the vertical standpipe. Sensor output is compensated with a term based on vehicle motion parameters to compensate for fluid level distortion due to motion-induced slosh.

    Abstract translation: 方法和系统正在提供改进发动机冷却液液位估计以减少发动机过热。 基于在顶部和底部位置处流体耦合到储存器的中空垂直立管中的流体水平来推断冷却剂溢流储存器中的流体水平,同时基于所发送的超声波信号的回波时间来估计立管中的液位 通过定位在垂直立管底部的凹部中的传感器。 传感器输出通过基于车辆运动参数的项来补偿,以补偿由于运动引起的晃动引起的液位失真。

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