Fuel system diagnosis via fuel pressure switch
    4.
    发明授权
    Fuel system diagnosis via fuel pressure switch 有权
    通过燃油压力开关进行燃油系统诊断

    公开(公告)号:US08312866B2

    公开(公告)日:2012-11-20

    申请号:US12263082

    申请日:2008-10-31

    IPC分类号: F02M1/00

    摘要: An engine system for a vehicle and its method of operation are provided. In one embodiment, a control system is configured to indicate a clogging of a fuel filter based on a period of time that a fuel pressure switch remains in a low pressure state. In some embodiments, the control system may respond to an indicated clogging of the fuel system by limiting one or more of fuel pressure, fuel flow rate, and vehicle speed. By limiting the flow rate and/or the pressure at which fuel is delivered to the engine during conditions when the low pressure fuel sub-system is unable to provide sufficient fuel pressure and/or flow, degradation and/or damage to the fuel system, including the high pressure pump, may be reduced or eliminated.

    摘要翻译: 提供了一种用于车辆的发动机系统及其操作方法。 在一个实施例中,控制系统被配置为基于燃料压力开关保持在低压状态的时间段来指示燃料过滤器的堵塞。 在一些实施例中,控制系统可以通过限制燃料压力,燃料流量和车辆速度中的一个或多个来响应燃料系统的指示的堵塞。 在低压燃料子系统不能提供足够的燃料压力和/或燃料系统的劣化和/或损坏的条件下,通过限制燃料被输送到发动机的流量和/或压力, 包括高压泵,可以减少或消除。

    FUEL SYSTEM DIAGNOSIS VIA FUEL PRESSURE SWITCH
    5.
    发明申请
    FUEL SYSTEM DIAGNOSIS VIA FUEL PRESSURE SWITCH 有权
    燃油系统诊断通过燃油压力开关

    公开(公告)号:US20130008409A1

    公开(公告)日:2013-01-10

    申请号:US13619700

    申请日:2012-09-14

    IPC分类号: F02M69/54

    摘要: An engine system for a vehicle and its method of operation are provided. In one embodiment, a control system is configured to indicate a clogging of a fuel filter based on a period of time that a fuel pressure switch remains in a low pressure state. In some embodiments, the control system may respond to an indicated clogging of the fuel system by limiting one or more of fuel pressure, fuel flow rate, and vehicle speed. By limiting the flow rate and/or the pressure at which fuel is delivered to the engine during conditions when the low pressure fuel sub-system is unable to provide sufficient fuel pressure and/or flow, degradation and/or damage to the fuel system, including the high pressure pump, may be reduced or eliminated.

    摘要翻译: 提供了一种用于车辆的发动机系统及其操作方法。 在一个实施例中,控制系统被配置为基于燃料压力开关保持在低压状态的时间段来指示燃料过滤器的堵塞。 在一些实施例中,控制系统可以通过限制燃料压力,燃料流量和车辆速度中的一个或多个来响应燃料系统的指示的堵塞。 在低压燃料子系统不能提供足够的燃料压力和/或燃料系统的劣化和/或损坏的条件下,通过限制燃料被输送到发动机的流量和/或压力, 包括高压泵,可以减少或消除。

    Fuel system diagnosis via fuel pressure switch
    7.
    发明授权
    Fuel system diagnosis via fuel pressure switch 有权
    通过燃油压力开关进行燃油系统诊断

    公开(公告)号:US08439014B2

    公开(公告)日:2013-05-14

    申请号:US13619700

    申请日:2012-09-14

    IPC分类号: F02M1/00

    摘要: An engine system for a vehicle and its method of operation are provided. In one embodiment, a control system is configured to indicate a clogging of a fuel filter based on a period of time that a fuel pressure switch remains in a low pressure state. In some embodiments, the control system may respond to an indicated clogging of the fuel system by limiting one or more of fuel pressure, fuel flow rate, and vehicle speed. By limiting the flow rate and/or the pressure at which fuel is delivered to the engine during conditions when the low pressure fuel sub-system is unable to provide sufficient fuel pressure and/or flow, degradation and/or damage to the fuel system, including the high pressure pump, may be reduced or eliminated.

    摘要翻译: 提供了一种用于车辆的发动机系统及其操作方法。 在一个实施例中,控制系统被配置为基于燃料压力开关保持在低压状态的时间段来指示燃料过滤器的堵塞。 在一些实施例中,控制系统可以通过限制燃料压力,燃料流量和车辆速度中的一个或多个来响应燃料系统的指示的堵塞。 在低压燃料子系统不能提供足够的燃料压力和/或燃料系统的劣化和/或损坏的条件下,通过限制燃料被输送到发动机的流量和/或压力, 包括高压泵,可以减少或消除。

    FUEL SYSTEM DIAGNOSIS VIA FUEL PRESSURE SWITCH
    9.
    发明申请
    FUEL SYSTEM DIAGNOSIS VIA FUEL PRESSURE SWITCH 有权
    燃油系统诊断通过燃油压力开关

    公开(公告)号:US20100108029A1

    公开(公告)日:2010-05-06

    申请号:US12263082

    申请日:2008-10-31

    IPC分类号: F02D41/14 F02M69/54

    摘要: An engine system for a vehicle and its method of operation are provided. In one embodiment, the engine system includes an internal combustion engine; a fuel passage for supplying fuel to the internal combustion engine; a fuel pump arranged along the fuel passage; a fuel filter downstream of the fuel pump; a fuel pressure switch arranged along the fuel passage downstream of the fuel filter, the fuel pressure switch configured to switch to a high pressure state in response to a higher fuel pressure within the fuel passage downstream of the fuel filter and switch to a low pressure state in response to a lower fuel pressure within the fuel passage downstream of the fuel filter; and a control system configured to indicate a clogging of the fuel filter based on a period of time that the fuel pressure switch remains in the low pressure state.

    摘要翻译: 提供了一种用于车辆的发动机系统及其操作方法。 在一个实施例中,发动机系统包括内燃机; 用于向内燃机供给燃料的燃料通道; 沿着燃料通道布置的燃料泵; 在燃料泵下游的燃料过滤器; 燃料压力开关,其沿燃料过滤器下游的燃料通道设置,燃料压力开关被配置为响应于在燃料过滤器下游的燃料通道内的较高燃料压力而切换到高压状态,并切换到低压状态 响应于燃料过滤器下游的燃料通道内的较低燃料压力; 以及控制系统,其被配置为基于燃料压力开关保持在低压状态的时间段来指示燃料过滤器的堵塞。