公开(公告)号：US08020429B2

公开(公告)日：2011-09-20

申请号：US12278791

申请日：2007-06-27

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

发明人： Rihito Kaneko ,  Kenji Kasashima ,  Masatomo Yoshihara ,  Kenji Senda ,  Norihito Hanai ,  Yasuhiro Yamasako ,  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 calculating a correlation coefficient by dividing the sum of respective absolute values, which are each a difference between a magnitude in an engine vibration waveform and a magnitude in a knock waveform model for every crank angle, by an area corresponding to magnitudes equal to or larger than a positive reference value in the knock waveform model, and determining whether or not knocking has occurred based on the correlation coefficient.

摘要翻译： 发动机ECU执行程序，其包括通过将每个曲柄角的爆震波形模型中的发动机振动波形的大小和大小之间的差分除以相应的绝对值之和除以相应的区域来计算相关系数 到爆震波形模型中等于或大于正参考值的量值，以及基于相关系数确定是否已经发生爆震。

公开(公告)号：US07822533B2

公开(公告)日：2010-10-26

申请号：US12280753

申请日：2007-05-28

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

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

IPC分类号： G06F19/00 ,  F02P5/00

CPC分类号： F02D35/027 ,  F02D2250/28 ,  F02P5/152

摘要： An engine ECU executes a program including a step of setting a search range of the crank angle of a peak value P that is the largest integrated value in a vibration waveform of an engine detected by calculating integrated values that are integrals of output voltage values of a knock sensor for every five degrees of a crank angle such that the search range may include the crank angle increasing with increase in engine speed NE, and a step of detecting the crank angle of the largest integrated value in the search range, and setting the detected crank angle as the crank angle of peak value P in the vibration waveform. At the crank angle based on the crank angle of peak value P, the vibration waveform is compared with a knock waveform model.

摘要翻译： 发动机ECU执行程序，该程序包括以下步骤：将通过计算作为积分值的积分值的积分值设定为检测到的发动机的振动波形中的作为最大积分值的峰值P的曲柄角度的搜索范围， 使得搜索范围可以包括随着发动机转速NE的增加而增加的曲柄角度，以及检测搜索范围中最大积分值的曲柄角的步骤，并且设定检测到的曲柄角度 曲柄角作为振动波形中峰值P的曲柄角。 在基于峰值P的曲柄角的曲柄角处，将振动波形与爆震波形模型进行比较。

公开(公告)号：US07677083B2

公开(公告)日：2010-03-16

申请号：US11410037

申请日：2006-04-25

申请人： Shuhei Oe ,  Kiyoshi Iwade ,  Kouji Ohara ,  Rihito Kaneko ,  Kenji Kasashima ,  Yuichi Takemura ,  Shigeru Kamio

发明人： Shuhei Oe ,  Kiyoshi Iwade ,  Kouji Ohara ,  Rihito Kaneko ,  Kenji Kasashima ,  Yuichi Takemura ,  Shigeru Kamio

IPC分类号： G01L23/22

CPC分类号： G01L23/221 ,  G01M15/12

摘要： An engine ECU executes a program including the steps of: setting a knock waveform model corresponding to engine speed sensed by a crank position sensor; calculating knock intensity N based on the result of comparison between a detected waveform and the set knock waveform model; when the knock intensity N is larger than a predetermined reference value, determining that knocking has occurred; and when the knock intensity N is not larger than the predetermined reference value, determining that knocking has not occurred.

摘要翻译： 发动机ECU执行程序，包括以下步骤：设置与由曲柄位置传感器感测的发动机转速对应的爆震波形模型; 基于检测波形与设定的爆震波形模型的比较结果计算爆震强度N; 当爆震强度N大于预定参考值时，确定发生爆震; 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：US07673615B2

公开(公告)日：2010-03-09

申请号：US12092163

申请日：2007-10-01

申请人： Shuhei Oe ,  Kouzi Ohara ,  Satoshi Masuda ,  Yuuichi Takemura ,  Rihito Kaneko ,  Kenji Kasashima ,  Masatomo Yoshihara ,  Kenji Senda ,  Norihito Hanai ,  Yasuhiro Yamasako

发明人： Shuhei Oe ,  Kouzi Ohara ,  Satoshi Masuda ,  Yuuichi Takemura ,  Rihito Kaneko ,  Kenji Kasashima ,  Masatomo Yoshihara ,  Kenji Senda ,  Norihito Hanai ,  Yasuhiro Yamasako

IPC分类号： F02P5/00 ,  G01L23/22

CPC分类号： G01M15/11 ,  F02D35/027 ,  F02D41/1498 ,  G01L23/225

摘要： An engine ECU executes: calculating 15-degrees integrated value integrating vibration intensity for each of six crank angle ranges; detecting an amount of change in the 15-degrees integrated value between ignition cycles; specifying two ranges having larger amounts of change; specifying a crank angle having intensity larger than that of a neighboring crank angle in a search range determined to be the same as the specified ranges; calculating a coefficient of correlation K corresponding to a difference between a vibration waveform and a knock waveform model while the specified crank angle is matched with a timing at which intensity peaks in the knock waveform model; and, if the coefficient of correlation K is larger than a threshold value K(0), determining that knock has occurred.

摘要翻译： 发动机ECU执行：对六个曲柄角范围中的每一个计算积分振动强度的15度积分值; 检测点火循环之间15度积分值的变化量; 指定具有较大变化量的两个范围; 指定在确定为与所述指定范围相同的搜索范围内具有大于相邻曲柄角的强度的曲柄角; 计算与所述爆震波形模型中的强度峰值的定时相匹配的振动波形与爆震波形模型之间的差值的相关系数K; 并且如果相关系数K大于阈值K（0），则确定发生了敲击。

公开(公告)号：US07669459B2

公开(公告)日：2010-03-02

申请号：US11475993

申请日：2006-06-28

申请人： Masatomo Yoshihara ,  Kenji Kasashima ,  Rihito Kaneko ,  Koji Aso ,  Kenji Senda ,  Yuichi Takemura ,  Kiyoshi Iwade ,  Shuhei Oe

发明人： Masatomo Yoshihara ,  Kenji Kasashima ,  Rihito Kaneko ,  Koji Aso ,  Kenji Senda ,  Yuichi Takemura ,  Kiyoshi Iwade ,  Shuhei Oe

IPC分类号： G01L23/22

CPC分类号： G01L23/225

摘要： An engine ECU includes a bandpass filter (1) extracting only vibrations at a first frequency band A, a bandpass filter (2) extracting only vibrations at a second frequency band B, a bandpass filter (3) extracting only vibrations at a third frequency band C, and a bandpass filter (4) extracting only vibrations at a fourth frequency band D including the first to third frequency bands A-C. The engine ECU determines whether knocking occurred or not based on a vibration waveform of the fourth frequency band D and a peak value in magnitude of vibrations in a synthesized waveform of the first to third frequency bands.

摘要翻译： 发动机ECU包括仅抽取第一频带A的振动的带通滤波器（1），仅抽取第二频带B的振动的带通滤波器（2），仅提取第三频带的振动的带通滤波器（3） C和带通滤波器（4）仅提取包括第一至第三频带AC的第四频带D的振动。 发动机ECU基于第四频带D的振动波形和第一至第三频带的合成波形中的振动幅度的峰值来确定是否发生敲击。

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：US20090165746A1

公开(公告)日：2009-07-02

申请号：US12096390

申请日：2006-12-08

申请人： Koji Aso ,  Kenji Kasashima ,  Rihito Kaneko ,  Masatomo Yoshihara ,  Kenji Senda ,  Yuichi Takemura ,  Shuhei Oe

发明人： Koji Aso ,  Kenji Kasashima ,  Rihito Kaneko ,  Masatomo Yoshihara ,  Kenji Senda ,  Yuichi Takemura ,  Shuhei Oe

IPC分类号： F02P5/00

CPC分类号： F02P5/1523 ,  G01L23/225 ,  Y02T10/46

摘要： An engine ECU executes a program including: a step (S310) of multiplying a correction amount of a determination value V(KX) by Q, when deviation L between an approximation value V(R), which is an average value of determination values V(KX) corrected according to the occurrence frequency of knocking, and an approximation value V(R−1) previously calculated is greater than a predetermined value (NO in S306) or when the number of times where deviation L is determined to be smaller than a predetermined value is smaller than a predetermined number of times (NO in S308); and a step (S312) of multiplying the correction amount of the determination value V(KX) by 1/P, when the number of times where the deviation L is determined to be smaller than a predetermined value is greater than a predetermined number of times (YES in S308). By comparing the determination value V(KX) and knock magnitude, determination of knocking is made, and ignition timing is advanced or retarded.

摘要翻译： 发动机ECU执行程序，包括：步骤（S310），当作为确定值V（KX）的校正量V（KX）的平均值V的近似值V（R） （KX），并且预先计算的近似值V（R-1）大于预定值（S306中为“否”），或者当偏差L被确定为小于 预定值小于预定次数（S308中为“否”）。 以及当确定偏差L小于预定值的次数时，将确定值V（KX）的校正量乘以1 / P的步骤（S312）大于预定次数 （S308中为“是”）。 通过比较判定值V（KX）和爆震振幅，进行敲击判定，点火正时进行或延迟。

公开(公告)号：US07363142B2

公开(公告)日：2008-04-22

申请号：US11678805

申请日：2007-02-26

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

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

IPC分类号： G06F19/00 ,  F02P5/00

CPC分类号： F02P5/152 ,  Y02T10/46

摘要： An engine ECU executes a program including the steps of: calculating a magnitude value LOG(V) from a magnitude V detected using a knock sensor; calculating a median value V(50) and a standard deviation a of calculated magnitude values LOG(V); calculating a knock determination level V(KD) that is a value obtained by adding the product of standard deviation a and a coefficient U(3) to median value V(50); and when knock determination level V(KD) is greater than the product of determination value V(KX) and a coefficient K, decreasing determination value V(KX). When a knock magnitude N calculated using magnitude V is greater than determination value V(KX), ignition timing is retarded.

摘要翻译： 发动机ECU执行程序，包括以下步骤：从使用爆震传感器检测的幅值V计算幅度值LOG（V）; 计算中值V（50）和计算的幅度值LOG（V）的标准偏差a; 计算通过将标准偏差a和系数U（3）的乘积加到中值V（50）而获得的值的爆震判定水平V（KD）; 当爆震判定水平V（KD）大于判定值V（KX）的乘积和系数K时，减小判定值V（KX）。 当使用振幅V计算的爆震振幅N大于判定值V（KX）时，点火正时被延迟。

公开(公告)号：US20080000448A1

公开(公告)日：2008-01-03

申请号：US11767738

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： F02P5/152 ,  F02D35/027 ,  F02D2041/1433 ,  G01L23/225 ,  Y02T10/46

摘要： An engine ECU executes a program including the steps of: determining that the condition that there is a possibility of occurrence of knocking is satisfied, based on the result of comparison between a vibration waveform of an engine and a knock waveform model; calculating a 40CA integrated value by integrating magnitudes of vibration occurring in the engine for a range of crank angle of 40°; calculating a knock magnitude N by dividing the 40CA integrated value by a BGL; determining that knocking has occurred when the knock magnitude N is larger than a determination value V(KX); and determining that knocking has not occurred when the knock magnitude N is smaller than the determination value V(KX).

摘要翻译： 发动机ECU执行程序，包括以下步骤：基于发动机的振动波形与爆震波形模型之间的比较结果，确定满足发生爆震可能性的条件; 通过在40度的曲柄角范围内积分发动机发生振动的大小来计算40CA积分值; 通过将40CA积分值除以BGL来计算爆震量N; 确定当爆震振幅N大于确定值V（KX）时发生爆震; 并且当爆震振幅N小于确定值V（KX）时确定没有发生爆震。

公开(公告)号：US20070215108A1

公开(公告)日：2007-09-20

申请号：US11678805

申请日：2007-02-26

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

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

IPC分类号： F02P5/00

CPC分类号： F02P5/152 ,  Y02T10/46

摘要： An engine ECU executes a program including the steps of: calculating a magnitude value LOG(V) from a magnitude V detected using a knock sensor; calculating a median value V(50) and a standard deviation a of calculated magnitude values LOG(V); calculating a knock determination level V(KD) that is a value obtained by adding the product of standard deviation a and a coefficient U(3) to median value V(50); and when knock determination level V(KD) is greater than the product of determination value V(KX) and a coefficient K, decreasing determination value V(KX). When a knock magnitude N calculated using magnitude V is greater than determination value V(KX), ignition timing is retarded.

摘要翻译： 发动机ECU执行程序，包括以下步骤：从使用爆震传感器检测的幅值V计算幅度值LOG（V）; 计算中值V（50）和计算的幅度值LOG（V）的标准偏差a; 计算通过将标准偏差a和系数U（3）的乘积加到中值V（50）而获得的值的爆震判定水平V（KD）; 当爆震判定水平V（KD）大于判定值V（KX）的乘积和系数K时，减小判定值V（KX）。 当使用振幅V计算的爆震振幅N大于判定值V（KX）时，点火正时被延迟。