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1. 发明申请

US20110178750A1 FREQUENCY SPECTRUM ANALYZING APPARATUS 有权
标题翻译：频谱分析仪
公开(公告)号：US20110178750A1
公开(公告)日：2011-07-21
申请号：US13120433
申请日：2009-09-09
申请人： Natsuko Kitamura , Yoshiaki Akimoto , Jiro Takagi , Atsushi Kurauchi , Masayuki Yoshiiri , Hirotaka Komatsu , Kazuhiko Hirota , Makoto Murakami
发明人： Natsuko Kitamura , Yoshiaki Akimoto , Jiro Takagi , Atsushi Kurauchi , Masayuki Yoshiiri , Hirotaka Komatsu , Kazuhiko Hirota , Makoto Murakami
IPC分类号： G01R23/16
CPC分类号： G01R23/16 , G01L23/221 , G01L23/225 , G01M15/12 , G05B15/00 , G06F17/00 , G06F19/00
摘要： 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.
摘要翻译：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。

2. 发明授权

US08725463B2 Frequency spectrum analyzing apparatus 有权
标题翻译：频谱分析装置
公开(公告)号：US08725463B2
公开(公告)日：2014-05-13
申请号：US13120433
申请日：2009-09-09
申请人： Natsuko Kitamura , Yoshiaki Akimoto , Jiro Takagi , Atsushi Kurauchi , Masayuki Yoshiiri , Hirotaka Komatsu , Kazuhiko Hirota , Makoto Murakami
发明人： Natsuko Kitamura , Yoshiaki Akimoto , Jiro Takagi , Atsushi Kurauchi , Masayuki Yoshiiri , Hirotaka Komatsu , Kazuhiko Hirota , Makoto Murakami
IPC分类号： G01R23/16 , G06F17/00 , G06F19/00 , G01L23/22 , G05B15/00
CPC分类号： G01R23/16 , G01L23/221 , G01L23/225 , G01M15/12 , G05B15/00 , G06F17/00 , G06F19/00
摘要： 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.
摘要翻译：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。

3. 发明授权

US08326518B2 Knocking detecting apparatus for internal combustion engine 有权
标题翻译：内燃机爆震检测装置
公开(公告)号：US08326518B2
公开(公告)日：2012-12-04
申请号：US12674577
申请日：2009-03-09
申请人： Hirotaka Komatsu , Jiro Takagi , Atsushi Kurauchi , Masayuki Yoshiiri , Kazuhiko Hirota , Natsuko Kitamura , Yoshiaki Akimoto
发明人： Hirotaka Komatsu , Jiro Takagi , Atsushi Kurauchi , Masayuki Yoshiiri , Kazuhiko Hirota , Natsuko Kitamura , Yoshiaki Akimoto
IPC分类号： G06F19/00 , G01L23/22
CPC分类号： G01L23/221 , F02D35/027 , F02D2041/288 , F02D2250/14 , G01M15/042 , G01M15/12
摘要： A knocking detecting apparatus for an internal combustion engine, which can more accurately perform the knocking determination based on frequency components of the output signal of the knock sensor, is provided. A frequency spectrum analysis of the knock sensor output signal is performed at predetermined angular intervals of the crankshaft rotation angle. Intensities of a plurality of frequency components obtained by the frequency spectrum analysis are stored as time series data. The time series data of the frequency component intensity are binarized, and it is determined whether or not a knocking has occurred based on the binarized time series data.
摘要翻译：提供了一种用于内燃机的爆震检测装置，其能够基于爆震传感器的输出信号的频率分量更准确地执行爆震确定。爆震传感器输出信号的频谱分析以曲轴旋转角度的预定角度间隔进行。通过频谱分析获得的多个频率分量的强度被存储为时间序列数据。频率分量强度的时间序列数据被二值化，并且基于二进制化的时间序列数据确定是否发生了敲击。

4. 发明授权

US08606489B2 Ignition timing control system for internal combustion engine 有权
标题翻译：内燃机点火正时控制系统
公开(公告)号：US08606489B2
公开(公告)日：2013-12-10
申请号：US13144978
申请日：2010-01-28
申请人： Masayuki Yoshiiri , Jiro Takagi , Hirotaka Komatsu , Kazuhiko Hirota , Atsushi Kurauchi , Natsuko Kitamura
发明人： Masayuki Yoshiiri , Jiro Takagi , Hirotaka Komatsu , Kazuhiko Hirota , Atsushi Kurauchi , Natsuko Kitamura
IPC分类号： G06F19/00 , G06G7/70
CPC分类号： F02P5/1522 , F02D35/027 , F02D41/187 , F02D41/2451 , F02D41/248 , Y02T10/46
摘要： 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.
摘要翻译：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。

5. 发明申请

US20110276293A1 FREQUENCY SPECTRUM ANALYZING APPARATUS 有权
标题翻译：频谱分析仪
公开(公告)号：US20110276293A1
公开(公告)日：2011-11-10
申请号：US13144981
申请日：2010-01-27
申请人： Natsuko Kitamura , Jiro Takagi , Atsushi Kurauchi , Hirotaka Komatsu , Masayuki Yoshiiri
发明人： Natsuko Kitamura , Jiro Takagi , Atsushi Kurauchi , Hirotaka Komatsu , Masayuki Yoshiiri
IPC分类号： G06F19/00
CPC分类号： F02D35/027 , F02D41/28 , F02D2041/288 , G01H17/00 , G01L23/225
摘要： 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 the 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, wherein the first 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 frequencies are calculated in synchronism with rotation of the engine, using the first element intensities and the second element intensities. Offset components contained in the first element intensities and the second element intensities are calculated, and the frequency component intensities are calculated after removing the offset components from the first and second element intensities.
摘要翻译：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运行参数进行采样，并将采样值转换为数字值。相对于预定数量的采样值计算第一和第二元素的强度，其中第一和第二元素分别对应于包含在检测值中的多个频率分量，并且第二元素的相位与相位不同的第一个元素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对应的频率分量强度。计算包含在第一元素强度和第二元素强度中的偏移分量，并且在从第一和第二元素强度中去除偏移分量之后计算频率分量强度。

6. 发明授权

US08731856B2 Frequency spectrum analyzing apparatus 有权
标题翻译：频谱分析装置
公开(公告)号：US08731856B2
公开(公告)日：2014-05-20
申请号：US13144981
申请日：2010-01-27
申请人： Natsuko Kitamura , Jiro Takagi , Atsushi Kurauchi , Hirotaka Komatsu , Masayuki Yoshiiri
发明人： Natsuko Kitamura , Jiro Takagi , Atsushi Kurauchi , Hirotaka Komatsu , Masayuki Yoshiiri
IPC分类号： G06F19/00
CPC分类号： F02D35/027 , F02D41/28 , F02D2041/288 , G01H17/00 , G01L23/225
摘要： 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 the 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, wherein the first 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 frequencies are calculated in synchronism with rotation of the engine, using the first element intensities and the second element intensities. Offset components contained in the first element intensities and the second element intensities are calculated, and the frequency component intensities are calculated after removing the offset components from the first and second element intensities.
摘要翻译：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运行参数进行采样，并将采样值转换为数字值。相对于预定数量的采样值计算第一和第二元素的强度，其中第一和第二元素分别对应于包含在检测值中的多个频率分量，并且第二元素的相位与相位不同的第一个元素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对应的频率分量强度。计算包含在第一元素强度和第二元素强度中的偏移分量，并且在从第一和第二元素强度中去除偏移分量之后计算频率分量强度。

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