CRANKCASE INTEGRITY BREACH DETECTION
    93.
    发明申请
    CRANKCASE INTEGRITY BREACH DETECTION 有权
    CRCKCASE完整性检测

    公开(公告)号:US20140081548A1

    公开(公告)日:2014-03-20

    申请号:US13618884

    申请日:2012-09-14

    IPC分类号: G06F19/00

    摘要: Systems and methods for monitoring crankcase ventilation system integrity are disclosed. In one example approach, a method comprises indicating a crankcase ventilation system degradation based on a lower vacuum than expected downstream of a PCV breather tube. For example, indicating a crankcase ventilation system degradation based on a lower vacuum than expected downstream of a PCV breather tube may include indicating a crankcase ventilation system degradation based on an absolute pressure sensor measurement relative to a gauge pressure sensor measurement.

    摘要翻译: 公开了用于监测曲轴箱通风系统完整性的系统和方法。 在一个示例性方法中,一种方法包括基于比PCV通气管下游的预期更低的真空来指示曲轴箱通风系统劣化。 例如,指示基于比PCV通气管下游预期的真空低的曲轴箱通风系统劣化可以包括基于相对于表压传感器测量的绝对压力传感器测量来指示曲轴箱通风系统劣化。

    Method and system for diagnosing cylinder valve activation/deactivation
    94.
    发明授权
    Method and system for diagnosing cylinder valve activation/deactivation 有权
    用于诊断气瓶阀门启动/停用的方法和系统

    公开(公告)号:US08667835B2

    公开(公告)日:2014-03-11

    申请号:US13620036

    申请日:2012-09-14

    IPC分类号: G01M15/08

    摘要: Methods and systems are provided for monitoring cylinder valve deactivation in an engine operating with a plurality of cylinder valves. One example method comprises indicating valve degradation based on an indication of manifold pressure over a plurality of immediately successive induction events of the engine, the indication responsive to increases and decreases in the indication of manifold pressure correlated to the induction events of engine cylinders and further correlated to whether cylinders are commanded to be activated or deactivated.

    摘要翻译: 提供了用于监测在与多个气缸阀一起操作的发动机中的气缸阀门失活的方法和系统。 一个示例性方法包括基于在发动机的多个立即连续的感应事件上的歧管压力的指示来指示阀门劣化,该指示响应于与发动机气缸的感应事件相关的歧管压力的指示的增加和减少,以及进一步相关 指示是否命令气缸被激活或停用。

    AIR/FUEL IMBALANCE MONITOR
    96.
    发明申请
    AIR/FUEL IMBALANCE MONITOR 审中-公开
    空气/燃料不平衡监测

    公开(公告)号:US20130184969A1

    公开(公告)日:2013-07-18

    申请号:US13353240

    申请日:2012-01-18

    IPC分类号: F02D41/00

    摘要: Systems and methods for monitoring cylinder air/fuel imbalances are provided. In one example approach, a method comprises, identifying a cylinder with a potential air/fuel imbalance based on crankshaft accelerations generated by a series of rich, lean, and stoichiometric conditions in the cylinder while keeping the engine at stoichiometry.

    摘要翻译: 提供了监测气缸空气/燃料不平衡的系统和方法。 在一个示例性方法中,一种方法包括:基于在气缸中由一系列富,贫和化学计量条件产生的曲轴加速度,识别具有潜在空气/燃料不平衡的气缸,同时将发动机保持在化学计量。

    Fuel system diagnosis via fuel pressure switch
    99.
    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。