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    • 2. 发明授权
    • Failure diagnostic method and apparatus for manifold pressure sensors
    • 歧管压力传感器的故障诊断方法和装置
    • US07263427B2
    • 2007-08-28
    • US11352374
    • 2006-02-13
    • Shumpei HasegawaTakashi SasakiHaruo Nakayama
    • Shumpei HasegawaTakashi SasakiHaruo Nakayama
    • B60T7/12G01L23/22
    • F02D41/222F02B77/08F02D2200/0406F02D2200/0408F02D2200/703F02D2400/08Y02T10/40
    • A failed manifold pressure sensor is identified in a control apparatus having two manifold pressure detecting systems as a failsafe. A first comparing unit outputs an abnormal signal when a difference ΔP between manifold pressures PMa and PMb detected respectively by two sensors is larger than a threshold value DP. A manifold pressure estimating unit estimates the manifold pressure from the engine revolution Ne, a throttle opening PLP, and an atmospheric pressure PAa. The difference calculating unit calculates a difference ΔPMb between the detected manifold pressure PMb and the estimated manifold pressure PMcal. The difference calculating unit calculates a difference ΔPMa between the detected manifold pressure PMa and the estimated manifold pressure PMcal. A second comparing unit compares the difference ΔPMa and the difference ΔPMb in response to the aforementioned abnormal signal. The failed manifold pressure sensor is specified according to which one of the difference ΔPMa and the difference ΔPMb is larger.
    • 在具有两个歧管压力检测系统的控制装置中识别故障歧管压力传感器作为故障保护。 当分别由两个传感器检测到的歧管压力PMa和PMb之间的差ΔP大于阈值DP时,第一比较单元输出异常信号。 歧管压力估计单元估计来自发动机转数Ne,节气门开度PLP和大气压力PAa的歧管压力。 差分计算单元计算检测到的歧管压力PMb和估计歧管压力PMcal之间的差值ΔPMb。 差分计算单元计算检测到的歧管压力PMa与估计的歧管压力PMcal之间的差值ΔPMa。 第二比较单元响应于上述异常信号来比较差值DeltaPMa和差值DeltaPMb。 根据差值DeltaPMa和差值DeltaPMb中的哪一个较大来指定故障歧管压力传感器。
    • 3. 发明申请
    • Failure diagnostic method and apparatus for manifold pressure sensors
    • 歧管压力传感器的故障诊断方法和装置
    • US20060184308A1
    • 2006-08-17
    • US11352374
    • 2006-02-13
    • Shumpei HasegawaTakashi SasakiHaruo Nakayama
    • Shumpei HasegawaTakashi SasakiHaruo Nakayama
    • G01M15/05
    • F02D41/222F02B77/08F02D2200/0406F02D2200/0408F02D2200/703F02D2400/08Y02T10/40
    • A failed manifold pressure sensor is identified in a control apparatus having two manifold pressure detecting systems as a failsafe. A first comparing unit outputs an abnormal signal when a difference ΔP between manifold pressures PMa and PMb detected respectively by two sensors is larger than a threshold value DP. A manifold pressure estimating unit estimates the manifold pressure from the engine revolution Ne, a throttle opening PLP, and an atmospheric pressure PAa. The difference calculating unit calculates a difference ΔPMb between the detected manifold pressure PMb and the estimated manifold pressure PMcal. The difference calculating unit calculates a difference ΔPMa between the detected manifold pressure PMa and the estimated manifold pressure PMcal. A second comparing unit compares the difference ΔPMa and the difference ΔPMb in response to the aforementioned abnormal signal. The failed manifold pressure sensor is specified according to which one of the difference ΔPMa and the difference ΔPMb is larger.
    • 在具有两个歧管压力检测系统的控制装置中识别故障歧管压力传感器作为故障保护。 当分别由两个传感器检测到的歧管压力PMa和PMb之间的差ΔP大于阈值DP时,第一比较单元输出异常信号。 歧管压力估计单元估计来自发动机转数Ne,节气门开度PLP和大气压力PAa的歧管压力。 差分计算单元计算检测到的歧管压力PMb和估计歧管压力PMcal之间的差值ΔPMb。 差分计算单元计算检测到的歧管压力PMa与估计的歧管压力PMcal之间的差值ΔPMa。 第二比较单元响应于上述异常信号来比较差值DeltaPMa和差值DeltaPMb。 根据差值DeltaPMa和差值DeltaPMb中的哪一个较大来指定故障歧管压力传感器。