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    Control and diagnostic systems for a variable capacity engine oil pump and an engine oil pressure sensor
    1.
    发明授权
    Control and diagnostic systems for a variable capacity engine oil pump and an engine oil pressure sensor 有权
    可变容量发动机油泵和发动机机油压力传感器的控制和诊断系统

    公开(公告)号：US08734122B2

    公开(公告)日：2014-05-27

    申请号：US12878284

    申请日：2010-09-09

    申请人： Lawrence O. Murray ,  David R. Staley ,  Kevin J. Storch ,  Colin S. Yager ,  Morena Bruno

    发明人： Lawrence O. Murray ,  David R. Staley ,  Kevin J. Storch ,  Colin S. Yager ,  Morena Bruno

    IPC分类号： F04B49/04

    CPC分类号： F01M1/16 ,  F01M1/20

    摘要： A control system includes an oil pump module and a diagnostic module. The oil pump module, based on engine operating conditions, selectively generates a first mode request signal to initiate a first transition from operating an oil pump of an engine in one of a first pressure mode and a second pressure mode to operating the oil pump in another one of the first pressure mode and the second pressure mode. The second pressure mode is different from the first pressure mode. The diagnostic module, based on when a driver starts the engine, selectively generates a second mode request signal to initiate consecutive transitions from operating the oil pump in the second pressure mode to operating the oil pump in the first pressure mode. The diagnostic module diagnoses a pump fault when a first oil pressure change associated with the consecutive transitions is less than a first predetermined pressure change.

    摘要翻译： 控制系统包括油泵模块和诊断模块。 油泵模块基于发动机操作条件选择性地产生第一模式请求信号，以启动从第一压力模式和第二压力模式中的一种操作发动机的油泵的第一过渡，以将油泵操作在另一个 第一压力模式和第二压力模式之一。 第二压力模式与第一压力模式不同。 诊断模块基于驾驶员何时启动发动机，选择性地产生第二模式请求信号，以启动在第二压力模式下操作油泵的连续转换，以在第一压力模式下操作油泵。 当与连续过渡相关联的第一油压变化小于第一预定压力变化时，诊断模块诊断泵故障。