公开(公告)号：US20090223281A1

公开(公告)日：2009-09-10

申请号：US12388651

申请日：2009-02-19

申请人： Satoshi Masuda ,  Hirohiko Yamada ,  Naoki Kokubo ,  Shuhei Oe

发明人： Satoshi Masuda ,  Hirohiko Yamada ,  Naoki Kokubo ,  Shuhei Oe

IPC分类号： G01L23/22

CPC分类号： G01L23/225

摘要： An output signal of a knock sensor is converted by an A/D conversion part in a specified knock determination range. In a time-frequency analysis part, data of frequency, time, and vibration intensity are extracted at the same time from an output signal of the knock sensor, and the time-varying patterns of vibration intensities in multiple frequency ranges are extracted. A knock determination part computes the number of time-varying patterns of vibration intensity which rise at same time. The knock determination part executes a knock determination based on whether the number of the time-varying patterns of vibration intensity is greater than a knock determination threshold.

摘要翻译： 爆震传感器的输出信号由指定的爆震判定范围内的A / D转换部转换。 在时频分析部中，从爆震传感器的输出信号同时提取频率，时间和振动强度的数据，并提取多个频率范围内的振动强度的随时间变化的模式。 爆震确定部分计算同时上升的振动强度的时变模式的数量。 爆震判定部基于振动强度的时变图案的数量是否大于爆震判定阈值来执行爆震判定。

公开(公告)号：US20090211337A1

公开(公告)日：2009-08-27

申请号：US12368490

申请日：2009-02-10

申请人： Satoshi Masuda ,  Hirohiko Yamada ,  Shuhei Oe ,  Naoki Kokubo

发明人： Satoshi Masuda ,  Hirohiko Yamada ,  Shuhei Oe ,  Naoki Kokubo

IPC分类号： G01L23/22

CPC分类号： G01L23/225

摘要： An output of a knock sensor is A/D converted in a specified knock determination range. In a time-frequency analysis part, data of frequency, time, and vibration intensity are extracted at the same time from the knock sensor output signal and the time-varying patterns of vibration intensities in multiple frequency ranges are extracted. An edge direction and an edge intensity are computed by an edge extraction processing. A correlation value expressing a correlation between time-varying patterns of vibration intensities in multiple frequency ranges and a reference model expressing the feature of knock is computed in a mutual correlation/knock determination part. The correlation value is compared with a determination threshold. When the correlation value is larger than the determination threshold, it is determined that knock is caused. When the correlation value is not larger than the determination threshold, it is determined that knock is not caused.

摘要翻译： 敲击传感器的输出在指定的敲击判定范围内进行A / D转换。 在时频分析部分，从爆震传感器输出信号中同时提取频率，时间和振动强度的数据，并提取多个频率范围内的振动强度的时变模式。 通过边缘提取处理来计算边缘方向和边缘强度。 在互相关/敲击判定部中计算出表示多个频率范围的振动强度的时变图案与表示敲击特征的参照模型之间的相关性的相关值。 将相关值与确定阈值进行比较。 当相关值大于确定阈值时，确定发生敲击。 当相关值不大于确定阈值时，确定不引起敲击。

公开(公告)号：US08151627B2

公开(公告)日：2012-04-10

申请号：US12388651

申请日：2009-02-19

申请人： Satoshi Masuda ,  Hirohiko Yamada ,  Naoki Kokubo ,  Shuhei Oe

发明人： Satoshi Masuda ,  Hirohiko Yamada ,  Naoki Kokubo ,  Shuhei Oe

IPC分类号： G01M15/12

CPC分类号： G01L23/225

摘要： An output signal of a knock sensor is converted by an A/D conversion part in a specified knock determination range. In a time-frequency analysis part, data of frequency, time, and vibration intensity are extracted at the same time from an output signal of the knock sensor, and the time-varying patterns of vibration intensities in multiple frequency ranges are extracted. A knock determination part computes the number of time-varying patterns of vibration intensity which rise at same time. The knock determination part executes a knock determination based on whether the number of the time-varying patterns of vibration intensity is greater than a knock determination threshold.

摘要翻译： 爆震传感器的输出信号由指定的爆震判定范围内的A / D转换部转换。 在时频分析部中，从爆震传感器的输出信号同时提取频率，时间和振动强度的数据，并提取多个频率范围内的振动强度的随时间变化的模式。 爆震确定部分计算同时上升的振动强度的时变模式的数量。 爆震判定部基于振动强度的时变图案的数量是否大于爆震判定阈值来执行爆震判定。

公开(公告)号：US08096166B2

公开(公告)日：2012-01-17

申请号：US12388616

申请日：2009-02-19

申请人： Satoshi Masuda ,  Hirohiko Yamada ,  Naoki Kokubo ,  Shuhei Oe

发明人： Satoshi Masuda ,  Hirohiko Yamada ,  Naoki Kokubo ,  Shuhei Oe

IPC分类号： G01M15/12

CPC分类号： G01L23/225

摘要： An output signal of a knock sensor is converted by an A/D conversion part in a specified knock determination range. In a time-frequency analysis part, data of frequency, time, and vibration intensity are extracted at the same time from an output signal of the knock sensor and the time-varying patterns of vibration intensities in multiple frequency ranges are extracted. A knock determination part computes lengths (crank angle, or time period) from a starting point to a latest terminating point of the time-varying patterns of vibration intensity in at least two frequency ranges, which rise at a same time. The knock determination part executes a knock determination based on whether the lengths are greater than a knock determination threshold.

摘要翻译： 爆震传感器的输出信号由指定的爆震判定范围内的A / D转换部转换。 在时频分析部中，从爆震传感器的输出信号同时提取频率，时间和振动强度的数据，并提取多个频率范围内的振动强度的时变图案。 敲击确定部分计算在至少两个频率范围内的振动强度的时变模式的起始点到最后终点的长度（曲柄角或时间周期），其同时上升。 爆震判定部基于长度是否大于爆震判定阈值来执行爆震判定。

公开(公告)号：US08056396B2

公开(公告)日：2011-11-15

申请号：US12368490

申请日：2009-02-10

申请人： Satoshi Masuda ,  Hirohiko Yamada ,  Shuhei Oe ,  Naoki Kokubo

发明人： Satoshi Masuda ,  Hirohiko Yamada ,  Shuhei Oe ,  Naoki Kokubo

IPC分类号： G01M15/12

CPC分类号： G01L23/225

摘要： An output of a knock sensor is A/D converted in a specified knock determination range. In a time-frequency analysis part, data of frequency, time, and vibration intensity are extracted at the same time from the knock sensor output signal and the time-varying patterns of vibration intensities in multiple frequency ranges are extracted. An edge direction and an edge intensity are computed by an edge extraction processing. A correlation value expressing a correlation between time-varying patterns of vibration intensities in multiple frequency ranges and a reference model expressing the feature of knock is computed in a mutual correlation/knock determination part. The correlation value is compared with a determination threshold. When the correlation value is larger than the determination threshold, it is determined that knock is caused. When the correlation value is not larger than the determination threshold, it is determined that knock is not caused.

摘要翻译： 敲击传感器的输出在指定的敲击判定范围内进行A / D转换。 在时频分析部分，从爆震传感器输出信号中同时提取频率，时间和振动强度的数据，并提取多个频率范围内的振动强度的时变模式。 通过边缘提取处理来计算边缘方向和边缘强度。 在互相关/敲击判定部中计算出表示多个频率范围的振动强度的时变图案与表示敲击特征的参照模型之间的相关性的相关值。 将相关值与确定阈值进行比较。 当相关值大于确定阈值时，确定引起敲击。 当相关值不大于确定阈值时，确定不引起敲击。

公开(公告)号：US20090217738A1

公开(公告)日：2009-09-03

申请号：US12372140

申请日：2009-02-17

申请人： Naoki Kokubo ,  Satoshi Masuda ,  Hirohiko Yamada ,  Shuhei Oe

发明人： Naoki Kokubo ,  Satoshi Masuda ,  Hirohiko Yamada ,  Shuhei Oe

IPC分类号： G01L23/22

CPC分类号： G01L23/225

摘要： A knock sensor signal is converted by an A/D conversion part in a specified knock determination range. In a time-frequency analysis part, data of frequency, time, and vibration intensity are extracted at the same time from an output signal of the knock sensor and the time-varying patterns of vibration intensity of multiple frequency ranges are extracted. Contours of the time-varying patterns of vibration intensity in multiple frequency ranges are extracted. Vectors indicating directions along which the vibration intensities vary are approximated by the contour of the time-varying pattern of vibration intensity in each frequency range according to the least-squares method. A knock determination is executed based on whether directions of any two or more of multiple vectors are within a predetermined range. Alternatively, a knock determination is executed based on whether a ratio of length of any two or more of the vectors is within a predetermined range.

摘要翻译： 爆震传感器信号由指定的爆震判定范围内的A / D转换部转换。 在时频分析部中，从爆震传感器的输出信号同时提取频率，时间和振动强度的数据，并提取多个频率范围的振动强度的随时间变化的模式。 提取多个频率范围内振动强度时变模式的轮廓。 指示振动强度变化的方向的矢量根据最小二乘法近似于每个频率范围内的振动强度的时变模式的轮廓。 基于多个向量中的任何两个或多个的方向是否在预定范围内来执行敲击判定。 或者，基于任何两个或更多个向量的长度的比率是否在预定范围内来执行敲击判定。

公开(公告)号：US06520149B2

公开(公告)日：2003-02-18

申请号：US09780439

申请日：2001-02-12

申请人： Naoki Kokubo ,  Hirohiko Yamada ,  Kenji Kasashima

发明人： Naoki Kokubo ,  Hirohiko Yamada ,  Kenji Kasashima

IPC分类号： F02P514

CPC分类号： G01L23/225

摘要： A knock control apparatus has a knock sensor and a signal processor. The signal processor integrates a knock sensor signal and differentiates the integrated signal. The signal processor detects a period in which the differentiated signal exceeds a threshold, and detects a peak of the differentiated signal. The signal processor then calculates a ratio between the detected signal generation period and the detected peak to determine a knock when the calculated ratio is within a predetermined range. Alternatively, the signal processor detects a peak generation time and calculates a ratio between the detected signal generation period and the detected peak generation time. In this instance, the signal processor determines the knock when the calculated ratio is within a predetermined range and the detected peak generation time is less than a predetermined time reference.

摘要翻译： 爆震控制装置具有爆震传感器和信号处理器。 信号处理器集成了一个爆震传感器信号并区分了积分信号。 信号处理器检测微分信号超过阈值的周期，并检测差分信号的峰值。 信号处理器然后计算检测信号产生周期与检测到的峰值之间的比率，以便当所计算的比率在预定范围内时确定爆震。 或者，信号处理器检测峰值生成时间，并计算检测信号生成周期与检测到的峰值生成时间之间的比率。 在这种情况下，当计算出的比率在预定范围内并且检测到的峰值生成时间小于预定的时间基准时，信号处理器确定敲击。

公开(公告)号：US06688286B2

公开(公告)日：2004-02-10

申请号：US10156692

申请日：2002-05-29

申请人： Naoki Kokubo ,  Hirohiko Yamada ,  Hideki Yukumoto ,  Hideyuki Maeji

发明人： Naoki Kokubo ,  Hirohiko Yamada ,  Hideki Yukumoto ,  Hideyuki Maeji

IPC分类号： F02P5152

CPC分类号： F02D41/2451 ,  F02D35/027 ,  F02D41/2441 ,  F02D2041/288 ,  F02P5/1521 ,  G01L23/225 ,  Y02T10/46

摘要： A knock control apparatus for engine has a knock sensor for detecting vibrations of the engine. The knock control apparatus determines an occurrence of knock by using at least one of a statistical process, a waveform process and a FFT process. The knock control apparatus desirably uses at least two of the above-described process for improving the accuracy of knock determination. The knock control apparatus learns a corrective value during a stable condition of the engine. The learned value is used for determining an ignition timing when the engine is in a transitional condition. Therefore, it is possible to detect a knock accurately, and reduce a knock when the engine is in the transitional condition.

摘要翻译： 用于发动机的爆震控制装置具有用于检测发动机振动的爆震传感器。 敲击控制装置通过使用统计处理，波形处理和FFT处理中的至少一个来确定敲击的发生。 爆震控制装置理想地使用至少两个上述提高爆震判定精度的方法。 爆震控制装置在发动机的稳定状态下学习校正值。 当发动机处于过渡状态时，所学习的值用于确定点火正时。 因此，可以精确地检测爆震，并且在发动机处于过渡状态时减少爆震。

公开(公告)号：US08443772B2

公开(公告)日：2013-05-21

申请号：US12760155

申请日：2010-04-14

申请人： Naoki Kokubo ,  Atsushi Yamanaka ,  Shinichi Kawada ,  Michinori Saito ,  Koichiro Ono ,  Kazuhiko Takayanagi

发明人： Naoki Kokubo ,  Atsushi Yamanaka ,  Shinichi Kawada ,  Michinori Saito ,  Koichiro Ono ,  Kazuhiko Takayanagi

IPC分类号： F01L1/34

CPC分类号： H02K5/141 ,  F01L1/022 ,  F01L1/344 ,  F01L2101/00 ,  F01L2820/032 ,  F01M9/10 ,  H02K5/10 ,  H02K5/225 ,  H02K7/083 ,  H02K7/14 ,  H02K16/025

摘要： A drive rotation member is driven by a crankshaft of the engine, and a driven rotation member is rotatable relative to the drive rotation member and secured to a cam shaft of the engine. An electric motor is arranged to rotate together with the drive rotation member and produces a dynamic power when fed with an electric current through brushes. A hollow control shaft is rotatable relative to the drive rotation member and forces the driven rotation member to rotate relative to the drive rotation member when rotated by the power of the electric motor. A bearing device is arranged between the driven rotation member and the hollow control shaft for smoothing a relative rotation therebetween. The bearing device includes a plurality of rollers. A lubrication oil feeding structure is provided for causing the rollers of the bearing device to be submerged in a lubrication oil at least when the engine is in operation.

摘要翻译： 驱动旋转构件由发动机的曲轴驱动，并且从动旋转构件可相对于驱动旋转构件旋转并且固定到发动机的凸轮轴。 电动机被布置成与驱动旋转构件一起旋转，并且当通过电刷馈送电流时产生动力。 中空控制轴可相对于驱动旋转构件旋转，并且当由电动机的动力旋转时迫使被驱动旋转构件相对于驱动旋转构件旋转。 轴承装置设置在从动旋转构件和中空控制轴之间，用于平滑其间的相对旋转。 轴承装置包括多个辊。 提供润滑油供给结构，用于至少在发动机运转时使轴承装置的辊子浸没在润滑油中。

公开(公告)号：US08215833B2

公开(公告)日：2012-07-10

申请号：US12559935

申请日：2009-09-15

申请人： Akinori Kouda ,  Naoki Kokubo

发明人： Akinori Kouda ,  Naoki Kokubo

IPC分类号： G01K15/00 ,  G01K13/00 ,  G01K7/00

CPC分类号： F01P11/16 ,  F01P2025/13 ,  F01P2025/42 ,  F01P2025/48 ,  F01P2025/66 ,  F01P2031/22

摘要： When the driving wind and the cooling wind are generated, based on the phenomenon in which the temperature difference is generated between the front surface and the rear surface of the radiator (14), the temperature difference between the detection value of the rear temperature sensor (22) and the detection value of the front temperature sensor (21) is compared with the abnormality determination value so that it is determined whether the front temperature sensor (21) and the rear temperature sensor (22) are properly fixed on the radiator (14), whereby it is determined whether the abnormality (unauthorized alteration) exists. By setting the abnormality determination value according to the ambient temperature and the vehicle speed, corresponding to a variation in temperature difference between the front surface and the rear surface of the radiator (14), the abnormality determination value is varied to be set at a proper value.

摘要翻译： 当产生驱动风和冷却风时，基于在散热器（14）的前表面和后表面之间产生温度差的现象，后部温度传感器的检测值（ 22），并将前端温度传感器（21）的检测值与异常判定值进行比较，从而确定前端温度传感器（21）和后部温度传感器（22）是否适当地固定在散热器（14） ），从而确定是否存在异常（未经授权的改变）。 通过根据与散热器（14）的前表面和后表面之间的温度差的变化相应的环境温度和车速来设置异常判定值，改变异常判定值以设定为适当的 值。