ENGINE CONTROL WITH VALVE OPERATION MONITORING USING CAMSHAFT POSITION SENSING
    76.
    发明申请
    ENGINE CONTROL WITH VALVE OPERATION MONITORING USING CAMSHAFT POSITION SENSING 有权
    使用CAMSHAFT位置传感器进行阀门操作监控的发动机控制

    公开(公告)号:US20120296550A1

    公开(公告)日:2012-11-22

    申请号:US13560253

    申请日:2012-07-27

    IPC分类号: F02D28/00

    摘要: A system or method for controlling a multiple cylinder internal combustion engine operable in a reduced displacement mode with at least one valve or cylinder selectively deactivated include monitoring valve operation by analyzing camshaft position to detect valve operation inconsistent with a current cylinder state (activated or deactivated) and controlling the engine in response to detecting the inconsistent operation. The camshaft position may be used to produce a surrogate signal indicative of intake/exhaust valve lift generated using camshaft sensor tooth deviation relative to an expected or reference tooth position for a corresponding crankshaft position and compared to a corresponding threshold. The surrogate signal indicative of valve lift may also be generated by pattern matching or correlation of one or more reference tooth position patterns to a measured or inferred tooth position pattern.

    摘要翻译: 一种用于控制以减少排量模式操作的多气缸内燃机的系统或方法,其中至少一个阀或气缸选择性地停用包括通过分析凸轮轴位置来监测阀门操作,以检测与当前气缸状态不一致的阀门操作(激活或停用) 并且响应于检测到不一致的操作来控制引擎。 可以使用凸轮轴位置来产生指示使用相对于相应曲轴位置的预期或参考齿位置的凸轮轴传感器齿偏差产生的进气/排气门升程的代理信号,并与相应的阈值进行比较。 指示气门升程的替代信号也可以通过一个或多个参考齿位置图案与测量或推断的齿位置图案的图案匹配或相关来产生。

    Coordination of variable cam timing and variable displacement engine systems
    77.
    发明授权
    Coordination of variable cam timing and variable displacement engine systems 有权
    可变凸轮定时和可变排量发动机系统的协调

    公开(公告)号:US08150605B2

    公开(公告)日:2012-04-03

    申请号:US12372481

    申请日:2009-02-17

    IPC分类号: F02D43/00 F01L9/02 F02D13/02

    摘要: Systems and methods are provided for operating an internal combustion engine including a variable cam timing (VCT) mechanism in cooperation with a plurality of deactivatable cylinders, each cylinder with a plurality of cylinder valves. One example method comprises, operating at a first cylinder valve timing before a transition of reactivating deactivated cylinders, and, before the transition, advancing cylinder valve timing from the first valve timing, where after the transition the cylinder valve timing remains at a second valve timing, the second valve timing advanced relative to the first valve timing.

    摘要翻译: 提供了用于操作内燃机的系统和方法,所述内燃机包括与多个可失活气缸协作的可变凸轮正时(VCT)机构,每个气缸具有多个汽缸阀。 一个示例性方法包括:在重新激活停用的气缸的过渡之前的第一气缸正时运行,并且在转换之前,从第一气门正时开始前进气缸正时,其中在过渡之后气缸正时保持在第二气门正时 ,第二阀定时相对于第一阀正时提前。

    Engine control with valve deactivation monitoring using exhaust pressure
    78.
    发明授权
    Engine control with valve deactivation monitoring using exhaust pressure 有权
    发动机控制,使用排气压力进行阀门停用监控

    公开(公告)号:US08006670B2

    公开(公告)日:2011-08-30

    申请号:US12722017

    申请日:2010-03-11

    IPC分类号: F02D13/06 F02D7/00

    摘要: A system or method for controlling a multiple cylinder internal combustion engine operable in a reduced displacement mode with at least one valve or cylinder selectively deactivated include controlling the engine in response to detecting opening of an exhaust valve after deactivation based measured or inferred exhaust pressure changes after deactivation. In one embodiment, controlling the engine includes reactivating one or more deactivated cylinders/valves, inhibiting subsequent deactivation, and/or storing a diagnostic code in a computer readable storage medium in response to detecting valve opening after deactivation.

    摘要翻译: 一种用于控制以减小排量模式操作的多气缸内燃机的系统或方法,其中至少一个阀或气缸选择性地停用包括响应于检测到排气阀的打开而在基于停用之后测量或推断的排气压力变化之后控制发动机 停用。 在一个实施例中,响应于在停用之后检测到阀打开,控制发动机包括重新激活一个或多个停用的汽缸/阀,禁止随后的去激活和/或将诊断代码存储在计算机可读存储介质中。

    Engine Control with Valve Operation Monitoring Using Camshaft Position Sensing
    79.
    发明申请
    Engine Control with Valve Operation Monitoring Using Camshaft Position Sensing 有权
    发动机控制与阀门操作监控使用凸轮轴位置检测

    公开(公告)号:US20110144883A1

    公开(公告)日:2011-06-16

    申请号:US12877309

    申请日:2010-09-08

    IPC分类号: F02D28/00

    摘要: A system or method for controlling a multiple cylinder internal combustion engine operable in a reduced displacement mode with at least one valve or cylinder selectively deactivated include monitoring valve operation by analyzing camshaft position to detect valve operation inconsistent with a current cylinder state (activated or deactivated) and controlling the engine in response to detecting the inconsistent operation. The camshaft position may be used to produce a surrogate signal indicative of intake/exhaust valve lift generated using camshaft sensor tooth deviation relative to an expected or reference tooth position for a corresponding crankshaft position and compared to a corresponding threshold. The surrogate signal indicative of valve lift may also be generated by pattern matching or correlation of one or more reference tooth position patterns to a measured or inferred tooth position pattern.

    摘要翻译: 一种用于控制以减少排量模式操作的多气缸内燃机的系统或方法,其中至少一个阀或气缸选择性地停用包括通过分析凸轮轴位置来监测阀门操作,以检测与当前气缸状态不一致的阀门操作(激活或停用) 并且响应于检测到不一致的操作来控制引擎。 可以使用凸轮轴位置来产生指示使用相对于相应曲轴位置的预期或参考齿位置的凸轮轴传感器齿偏差产生的进气/排气门升程的代理信号,并与相应的阈值进行比较。 指示气门升程的替代信号也可以通过一个或多个参考齿位置图案与测量或推断的齿位置图案的图案匹配或相关来产生。

    INFERRED OIL RESPONSIVENESS USING PRESSURE SENSOR PULSES
    80.
    发明申请
    INFERRED OIL RESPONSIVENESS USING PRESSURE SENSOR PULSES 有权
    使用压力传感器脉冲引起的油反应

    公开(公告)号:US20110066357A1

    公开(公告)日:2011-03-17

    申请号:US12561702

    申请日:2009-09-17

    IPC分类号: F02D41/00 F01L1/34

    CPC分类号: F01L1/34 F01L2001/34423

    摘要: A system and method for controlling an internal combustion engine include determining oil responsiveness based on pressure variations associated with oil pump pulses in response to a stimulus, and controlling the engine based on the determined oil responsiveness. The stimulus may be a change in oil temperature, engine speed, or commanded pump pressure, for example. The system and method may also use the rate of change of mean oil pressure to determine the oil responsiveness or measure of oil viscosity. Oil responsiveness may be used to control hydraulic actuators, such as variable cam timing devices, or valve deactivation devices.

    摘要翻译: 用于控制内燃机的系统和方法包括响应于刺激而基于与油泵脉冲相关联的压力变化来确定油响应性,以及基于所确定的油响应性来控制发动机。 刺激可能是例如油温,发动机转速或指令泵压力的变化。 系统和方法还可以使用平均油压的变化率来确定油的响应性或油粘度的测量。 油响应性可用于控制液压致动器,例如可变凸轮定时装置或阀停用装置。