公开(公告)号：US20090150058A1

公开(公告)日：2009-06-11

申请号：US12303123

申请日：2007-06-05

申请人： Rihito Kaneko ,  Kenji Kasashima ,  Masatomo Yoshihara ,  Kenji Senda ,  Norihito Hanai ,  Yuuichi Takemura ,  Shuhei Oe

发明人： Rihito Kaneko ,  Kenji Kasashima ,  Masatomo Yoshihara ,  Kenji Senda ,  Norihito Hanai ,  Yuuichi Takemura ,  Shuhei Oe

IPC分类号： G01L23/22

CPC分类号： G01L23/225

摘要： An engine ECU executes a program including the steps of: calculating a coefficient of correlation K in accordance with a result of comparing a waveform of a vibration of a frequency band including a resonance frequency of an engine with a knock waveform model previously created as a waveform of a vibration caused when the engine knocks (S112); calculating a knock intensity N from an intensity of a vibration of a frequency band excluding the resonance frequency of the engine (S114); if knock intensity N is larger than a reference value and coefficient of correlation K is larger than a threshold value (YES at S116), determining that the engine knocks (S118); and if knock intensity N is smaller than the reference value and/or coefficient of correlation K is smaller than the threshold value, determining that the engine does not knock (S122).

摘要翻译： 发动机ECU执行程序，包括以下步骤：根据将包括发动机的共振频率的频带的振动的波形与先前创建的爆震波形模型进行比较的结果，计算相关系数K 发动机爆震时产生的振动（S112）; 从除了发动机的共振频率之外的频带的振动强度计算爆震强度N（S114）; 如果爆震强度N大于参考值，并且相关系数K大于阈值（S116为“是”），确定发动机爆震（S118）; 并且如果爆震强度N小于参考值和/或相关系数K小于阈值，则确定发动机没有敲击（S122）。

公开(公告)号：US20090038384A1

公开(公告)日：2009-02-12

申请号：US12162489

申请日：2007-05-21

申请人： Rihito Kaneko ,  Kenji Kasashima ,  Masatomo Yoshihara ,  Kenji Senda ,  Yuuichi Takemura ,  Shuhei Oe

发明人： Rihito Kaneko ,  Kenji Kasashima ,  Masatomo Yoshihara ,  Kenji Senda ,  Yuuichi Takemura ,  Shuhei Oe

IPC分类号： G01M15/12

CPC分类号： F02P5/152 ,  F02D35/027 ,  F02D2041/1432 ,  G01L23/225 ,  Y02T10/46

摘要： Out of synthesized waveforms of vibrations in a first frequency band A to a third frequency band C, a knock magnitude N is calculated by using a portion β having an integrated value greater than a reference magnitude in a knock region but not using a portion having an integrated value greater than the reference magnitude out of the knock region (i.e., a region obtained by excluding the knock region from a knock detecting gate). In a case where knock magnitude N is greater than a determination value V(KX), it is determined that knocking occurs. In contrast, in a case where knock magnitude N is not greater than determination value V(KX), it is determined that no knocking occurs.

摘要翻译： 在第一频带A到第三频带C的合成的振动波形中，通过使用具有大于敲击区域中的参考幅度的积分值的部分β来计算爆震振幅N，但不使用具有 积分值大于敲击区域的参考幅度（即，通过从爆震检测门排除爆震区域而获得的区域）。 在爆震振幅N大于判定值V（KX）的情况下，判断为发生爆震。 相反，在爆震振幅N不大于判定值V（KX）的情况下，判断为不发生爆震。

公开(公告)号：US07478622B2

公开(公告)日：2009-01-20

申请号：US11767955

申请日：2007-06-25

申请人： Rihito Kaneko ,  Kenji Kasashima ,  Masatomo Yoshihara ,  Kenji Senda ,  Yuuichi Takemura ,  Shuhei Oe

发明人： Rihito Kaneko ,  Kenji Kasashima ,  Masatomo Yoshihara ,  Kenji Senda ,  Yuuichi Takemura ,  Shuhei Oe

IPC分类号： F02P5/00

CPC分类号： G01L23/225 ,  F02D35/027 ,  F02P5/152

摘要： An engine ECU executes a program including the steps of: calculating a magnitude value LOG(V) by logarithmically converting a magnitude V of vibration occurring in an engine, calculating a median V(50) and a standard deviation σ of magnitude values LOG(V); and setting, to the product of the standard deviation σ and a factor A, a first upper limit of a determination value V(KX) that is to be compared with a knock magnitude N for determining whether or not knocking has occurred, and setting a first lower limit of the determination value V(KX) to the product of the standard deviation σ and a factor B.

摘要翻译： 发动机ECU执行程序，包括以下步骤：通过对数变换发动机中发生的振动的振幅V来计算振幅值LOG（V），计算中值V（50）和幅度值LOG（V）的标准偏差σ ）; 并且将与标准偏差σ和因子A的乘积设定为与用于确定是否已经发生敲击的爆震大小N进行比较的确定值V（KX）的第一上限，并且将 确定值V（KX）与标准偏差σ和因子B的乘积的第一下限。

公开(公告)号：US20080306677A1

公开(公告)日：2008-12-11

申请号：US12191327

申请日：2008-08-14

申请人： Kiyoshi IWADE ,  Nobuyuki Murate ,  Shuhei Oe ,  Rihito Kaneko ,  Kenji Kasashima ,  Yuichi Takemura

发明人： Kiyoshi IWADE ,  Nobuyuki Murate ,  Shuhei Oe ,  Rihito Kaneko ,  Kenji Kasashima ,  Yuichi Takemura

IPC分类号： G01L23/22

CPC分类号： G01L23/225

摘要： An engine ECU executes a program including a step of calculating intensity values LOG(V) based on signals transmitted from a knock sensor; a step of deciding a maximum value V(MAX) in frequency distribution of intensity values LOG(V) for N cycles (N is a natural number); a step of calculating a knock determination level V(KD) based on the frequency distribution; a step of, when the knock determination level V(KD) is smaller than the maximum value V(MAX), removing V(MAX) from the frequency distribution; and a step of counting the total frequency of removed maximum values V(MAX) as knock occupancy KC. Maximum values V(MAX) are removed until the knock determination level V(KD) and the maximum value V(MAX) coincide, and the knock determination level V(KD) is recalculated.

摘要翻译： 发动机ECU执行包括基于从爆震传感器发送的信号来计算强度值LOG（V）的步骤的程序; 在N个周期（N是自然数）中确定强度值LOG（V）的频率分布的最大值V（MAX）的步骤; 基于频率分布计算爆震判定电平V（KD）的步骤; 当爆震判定电平V（KD）小于最大值V（MAX）时，从频率分布中去除V（MAX）的步骤; 以及将去除的最大值V（MAX）的总频率计数为敲击占有率KC的步骤。 去除最大值V（MAX），直到爆震判定水平V（KD）和最大值V（MAX）重合为止，并重新计算爆震判定水平V（KD）。

公开(公告)号：US07412874B2

公开(公告)日：2008-08-19

申请号：US11410983

申请日：2006-04-26

申请人： Shuhei Oe ,  Kiyoshi Iwade ,  Nobuyuki Murate ,  Rihito Kaneko ,  Yuichi Takemura ,  Shigeru Kamio

发明人： Shuhei Oe ,  Kiyoshi Iwade ,  Nobuyuki Murate ,  Rihito Kaneko ,  Yuichi Takemura ,  Shigeru Kamio

IPC分类号： G01L23/22

CPC分类号： G01L23/225

摘要： An engine ECU executes a program including the steps of: detecting a vibration corresponding to a first radial resonance mode by using a band-pass filter, from vibrations sensed by an in-cylinder pressure sensor provided at an upper central portion of the cylinder; calculating knock intensity N based on a result of comparison between the detected waveform and a knock waveform model prepared in advance as a vibration waveform when knocking occurs; determining that knocking occurred when the knock intensity N is larger than a predetermined reference value; and determining that knocking has not occurred when the knock intensity N is not larger than the predetermined reference value.

摘要翻译： 发动机ECU执行程序，包括以下步骤：通过使用带通滤波器从由设置在气缸的上中心部的缸内压力传感器检测到的振动来检测与第一径向共振模式相对应的振动; 基于检测波形与预先准备的爆震波形模型之间的比较结果，计算爆震强度N作为爆震时的振动波形; 确定当爆震强度N大于预定参考值时发生爆震; 并且当爆震强度N不大于预定参考值时，确定没有发生爆震。

公开(公告)号：US20070084267A1

公开(公告)日：2007-04-19

申请号：US11475231

申请日：2006-06-27

申请人： Kiyoshi Iwade ,  Nobuyuki Murate ,  Shuhei Oe ,  Rihito Kaneko ,  Kenji Kasashima ,  Yuichi Takemura

发明人： Kiyoshi Iwade ,  Nobuyuki Murate ,  Shuhei Oe ,  Rihito Kaneko ,  Kenji Kasashima ,  Yuichi Takemura

IPC分类号： G01L23/22 ,  G06F19/00 ,  F02P5/00

CPC分类号： G01L23/225

摘要： An engine ECU executes a program including a step of calculating intensity values LOG(V) based on signals transmitted from a knock sensor; a step of deciding a maximum value V(MAX) in frequency distribution of intensity values LOG(V) for N cycles (N is a natural number); a step of calculating a knock determination level V(KD) based on the frequency distribution; a step of, when the knock determination level V(KD) is smaller than the maximum value V(MAX), removing V(MAX) from the frequency distribution; and a step of counting the total frequency of removed maximum values V(MAX) as knock occupancy KC. Maximum values V(MAX) are removed until the knock determination level V(KD) and the maximum value V(MAX) coincide, and the knock determination level V(KD) is recalculated.

摘要翻译： 发动机ECU执行包括基于从爆震传感器发送的信号来计算强度值LOG（V）的步骤的程序; 在N个周期（N是自然数）中确定强度值LOG（V）的频率分布的最大值V（MAX）的步骤; 基于频率分布计算爆震判定电平V（KD）的步骤; 当爆震判定电平V（KD）小于最大值V（MAX）时，从频率分布中去除V（MAX）的步骤; 以及将去除的最大值V（MAX）的总频率计数为敲击占有率KC的步骤。 去除最大值V（MAX），直到爆震判定水平V（KD）和最大值V（MAX）重合为止，并重新计算爆震判定水平V（KD）。

公开(公告)号：US20060243030A1

公开(公告)日：2006-11-02

申请号：US11410983

申请日：2006-04-26

申请人： Shuhei Oe ,  Kiyoshi Iwade ,  Nobuyuki Murate ,  Rihito Kaneko ,  Yuichi Takemura ,  Shigeru Kamio

发明人： Shuhei Oe ,  Kiyoshi Iwade ,  Nobuyuki Murate ,  Rihito Kaneko ,  Yuichi Takemura ,  Shigeru Kamio

IPC分类号： G01L23/22

CPC分类号： G01L23/225

摘要： An engine ECU executes a program including the steps of: detecting a vibration corresponding to a first radial resonance mode by using a band-pass filter, from vibrations sensed by an in-cylinder pressure sensor provided at an upper central portion of the cylinder; calculating knock intensity N based on a result of comparison between the detected waveform and a knock waveform model prepared in advance as a vibration waveform when knocking occurs; determining that knocking occurred when the knock intensity N is larger than a predetermined reference value; and determining that knocking has not occurred when the knock intensity N is not larger than the predetermined reference value.

摘要翻译： 发动机ECU执行程序，包括以下步骤：通过使用带通滤波器从由设置在气缸的上中心部的缸内压力传感器检测到的振动来检测与第一径向共振模式相对应的振动; 基于检测波形与预先准备的爆震波形模型之间的比较结果，计算爆震强度N作为爆震时的振动波形; 确定当爆震强度N大于预定参考值时发生爆震; 并且当爆震强度N不大于预定参考值时，确定没有发生爆震。

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。