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    • 4. 发明申请
    • Misfire detecting apparatus for internal combustion engine
    • 内燃机失火检测装置
    • US20080103681A1
    • 2008-05-01
    • US11898235
    • 2007-09-11
    • Mahito ShikamaToshinori Tsukamoto
    • Mahito ShikamaToshinori Tsukamoto
    • G06G7/70
    • G01M15/11
    • A misfire detecting apparatus for detecting a misfire of an internal combustion engine based on a detected rotational speed parameter. A moving averaging calculation is performed with respect to data of the detected rotational speed parameter to calculate an averaged speed parameter, a number of the data being equal to a sampling number NTDC. A reference value of the averaged speed parameter and a relative speed parameter are calculated. The relative speed parameter is a deviation of the averaged speed parameter detected at every predetermined crank angle from the reference value. An integrated value of the relative speed parameter is calculated and a misfire determination is performed based on the integrated value. The sampling number (NTDC) is determined by an equation: NTDC=720/(N×Dθ) where (N) is a number of cylinders and (Dθ) is a sampling angular period (degree) of the rotational speed parameter.
    • 一种用于基于检测到的转速参数来检测内燃机的失火的失火检测装置。 对所检测的转速参数的数据执行移动平均计算,以计算平均速度参数,数据的数量等于采样数NTDC。 计算平均速度参数和相对速度参数的参考值。 相对速度参数是在每个预定曲轴角度处检测到的平均速度参数与参考值的偏差。 计算相对速度参数的积分值,并基于积分值执行失火判定。 采样数(NTDC)由以下等式确定:<?in-line-formula description =“In-line Formulas”end =“lead”?> NTDC = 720 /(NxDtheta)<?in-line-formula description = “直列公式”end =“tail”?>其中(N)是气缸数,(Dθ)是旋转速度参数的采样角度周期(度)。
    • 7. 发明授权
    • Misfire detecting apparatus for internal combustion engine
    • 内燃机失火检测装置
    • US07480591B2
    • 2009-01-20
    • US11898235
    • 2007-09-11
    • Mahito ShikamaToshinori Tsukamoto
    • Mahito ShikamaToshinori Tsukamoto
    • G06F11/30G06F15/00
    • G01M15/11
    • A misfire detecting apparatus for detecting a misfire of an internal combustion engine based on a detected rotational speed parameter. A moving averaging calculation is performed with respect to data of the detected rotational speed parameter to calculate an averaged speed parameter, a number of the data being equal to a sampling number NTDC. A reference value of the averaged speed parameter and a relative speed parameter are calculated. The relative speed parameter is a deviation of the averaged speed parameter detected at every predetermined crank angle from the reference value. An integrated value of the relative speed parameter is calculated and a misfire determination is performed based on the integrated value. The sampling number (NTDC) is determined by an equation: NTDC=720/(N×Dθ) where (N) is a number of cylinders and (Dθ) is a sampling angular period (degree) of the rotational speed parameter.
    • 一种用于基于检测到的转速参数来检测内燃机的失火的失火检测装置。 对所检测的转速参数的数据执行移动平均计算,以计算平均速度参数,数据的数量等于采样数NTDC。 计算平均速度参数和相对速度参数的参考值。 相对速度参数是在每个预定曲轴角度处检测到的平均速度参数与参考值的偏差。 计算相对速度参数的积分值,并基于积分值执行失火判定。 采样数(NTDC)由以下等式确定:<?in-line-formula description =“In-line Formulas”end =“lead”?> NTDC = 720 /(NxDtheta)<?in-line-formula description = “直列公式”end =“tail”?>其中(N)是气缸数,(Dθ)是旋转速度参数的采样角度周期(度)。
    • 8. 发明授权
    • Malfunction detecting system of engine cooling apparatus
    • 发动机冷却装置故障检测系统
    • US06907343B2
    • 2005-06-14
    • US10792775
    • 2004-03-05
    • Toshinori TsukamotoEisaku Gosyo
    • Toshinori TsukamotoEisaku Gosyo
    • F01P7/16F01P11/16F01P11/14
    • F01P11/16F01P2023/00F01P2025/08F01P2025/13F01P2025/52F01P2031/00
    • In a malfunction detecting system of an engine cooling apparatus constituted as a radiator having a thermostat that opens/closes a communicating passage between the engine and the radiator, estimated coolant temperature is calculated using a thermal load parameter correlated to rise in the coolant temperature after engine starting, whilst an engine standing time period is detected. Then, the detected engine standing time period is compared with a predetermined value and based on a result of comparison, one of preset threshold values including a malfunction discrimination threshold value and a malfunction discrimination execute threshold value is selected. The selected threshold value is then compared with the estimated coolant temperature or a difference between the estimated coolant temperature and the detected coolant temperature, and it is discriminated that the cooling apparatus has malfunctioned, when the estimated coolant temperature or the difference exceeds the malfunction discrimination threshold value. With this, the malfunction can be detected with high accuracy.
    • 在构成散热器的发动机冷却装置的故障检测系统中,该散热器具有开/关发动机和散热器之间的连通通道的恒温器,使用与发动机之间的冷却剂温度升高相关的热负荷参数来计算估计的冷却剂温度 起动时,同时检测到发动机静置时间段。 然后,将检测到的发动机静置时间与预定值进行比较,并且基于比较结果,选择包括故障鉴别阈值和故障识别执行阈值的预设阈值之一。 然后将所选择的阈值与估计的冷却剂温度或估计的冷却剂温度与检测到的冷却剂温度之间的差值进行比较,并且当估计的冷却剂温度或差异超过故障鉴别阈值时,判别冷却装置已经发生故障 值。 因此,可以高精度地检测故障。