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    • 8. 发明申请
    • FREQUENCY SPECTRUM ANALYZING APPARATUS
    • 频谱分析仪
    • US20110178750A1
    • 2011-07-21
    • US13120433
    • 2009-09-09
    • Natsuko KitamuraYoshiaki AkimotoJiro TakagiAtsushi KurauchiMasayuki YoshiiriHirotaka KomatsuKazuhiko HirotaMakoto Murakami
    • Natsuko KitamuraYoshiaki AkimotoJiro TakagiAtsushi KurauchiMasayuki YoshiiriHirotaka KomatsuKazuhiko HirotaMakoto Murakami
    • G01R23/16
    • G01R23/16G01L23/221G01L23/225G01M15/12G05B15/00G06F17/00G06F19/00
    • A frequency spectrum analyzing apparatus for performing a frequency spectrum analysis with respect to a detected value of an operating parameter of an internal combustion engine in synchronism with rotation of the engine, is provided. The operating parameter is sampled at predetermined time intervals, and a sampled value is converted to a digital value. Intensities of first and second elements are calculated with respect to a predetermined number of the sampled values. The first elements and second elements respectively correspond to a plurality of frequency components contained in the detected value, and a phase of the second element differs from a phase of the first element by 90 degrees. Frequency component intensities corresponding to the plurality of frequency components are calculated in synchronism with rotation of the engine, using the first element intensities and the second element intensities. The frequency component intensities are calculated by replacing a part of an integrated value of the first element intensities, and a part of an integrated value of the second element intensities respectively with corresponding preceding calculated values, when an rotational speed of the engine is higher than or equal to a set threshold value.
    • 提供了一种频谱分析装置,用于与发动机的旋转同步地执行关于内燃机的操作参数的检测值的频谱分析。 以预定的时间间隔对操作参数进行采样,并将采样值转换为数字值。 相对于预定数量的采样值来计算第一和第二元素的强度。 第一元件和第二元件分别对应于包含在检测值中的多个频率分量,并且第二元件的相位与第一元件的相位不同90度。 使用第一元件强度和第二元件强度,与发动机的旋转同步地计算与多个频率分量对应的频率分量强度。 通过将发动机的转速高于或等于的第一元件强度的积分值的一部分和第二元件强度的积分值的一部分分别与相应的先前计算值相对应地计算频率分量强度, 等于设定的阈值。
    • 10. 发明申请
    • IGNITION TIMING CONTROL SYSTEM FOR INTERNAL COMBUSTION ENGINE
    • 内燃机点火时间控制系统
    • US20110282562A1
    • 2011-11-17
    • US13144978
    • 2010-01-28
    • Masayuki YoshiriJiro TakagiHirotaka KomatsuKazuhiko HirotaAtsushi KurauchiNatsuko Kitamura
    • Masayuki YoshiriJiro TakagiHirotaka KomatsuKazuhiko HirotaAtsushi KurauchiNatsuko Kitamura
    • F02D45/00
    • F02P5/1522F02D35/027F02D41/187F02D41/2451F02D41/248Y02T10/46
    • An ignition timing control system for an internal combustion engine, for controlling an ignition timing of the engine, is provided. A charging efficiency of the engine is calculated according to the intake air flow rate and the engine rotational speed which are detected, and a knock limit ignition timing is calculated according to the engine rotational speed and the charging efficiency. A knock correction value is calculated according to the knocking detection result by a knock sensor, and a learning parameter table, in which first and second learning parameters are set, is updated based on the engine rotational speed and the knock correction value when the knocking is detected. The learning parameter table is retrieved according to the engine rotational speed, to calculate the first and second learning parameters. Each-cylinder correction values are calculated corresponding respectively to a plurality of cylinders of the engine using the charging efficiency, the first learning parameter, and the second learning parameter and the ignition timing of the engine is controlled using the knock limit ignition timing and the each-cylinder correction value.
    • 提供了一种用于控制发动机的点火正时的用于内燃机的点火正时控制系统。 根据检测到的进气流量和发动机转速来计算发动机的充气效率,并且根据发动机转速和充电效率计算爆震极限点火正时。 根据爆震传感器的爆震检测结果计算爆震校正值,并且当敲击是基于发动机转速和爆震校正值而更新基于第一和第二学习参数的学习参数表 检测到。 根据发动机转速检索学习参数表,计算第一和第二学习参数。 使用充电效率,第一学习参数和第二学习参数分别对应于发动机的多个气缸来计算每个气缸校正值,并且使用爆震极限点火正时来控制发动机的点火正时 - 气缸校正值。