公开(公告)号：US08205489B2

公开(公告)日：2012-06-26

申请号：US12602286

申请日：2008-05-27

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

发明人： Rihito Kaneko ,  Kenji Kasashima ,  Masatomo Yoshihara ,  Kenji Senda ,  Norihito Hanai ,  Yasuhiro Yamasako ,  Yuichi Takemura

IPC分类号： G01L23/22

CPC分类号： G01L23/225

摘要： An engine ECU executes a program including: detecting a magnitude of vibration of an engine; detecting a vibration waveform of the engine based on the magnitude; calculating a correlation coefficient, in the case where the engine speed is smaller than a threshold value, using the sum of values each determined by subtracting a positive reference value from a magnitude of a knock waveform model, as an area of the knock waveform model and, calculating the correlation coefficient, in the case where the engine speed is not smaller than the threshold value, using the area of the whole knock waveform model; and determining whether or not knocking has occurred using the correlation coefficient. The correlation coefficient is calculated by dividing by the area the sum of differences that are each the difference between the magnitude on the vibration waveform and the magnitude on the knock waveform model.

摘要翻译： 发动机ECU执行程序，包括：检测发动机振动的大小; 基于大小检测发动机的振动波形; 使用通过从爆震波形模型的大小中减去正的参考值而确定的值的总和作为爆震波形模型的面积，计算相对系数，在发动机转速小于阈值的情况下， 使用整个爆震波形模型的面积，计算发动机转速不小于阈值的情况下的相关系数; 以及使用所述相关系数来确定是否发生了敲击。 相关系数通过除以振动波形上的大小与爆震波形模型上的大小之间的差值之差的面积来计算。

公开(公告)号：US08000884B2

公开(公告)日：2011-08-16

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： G06F19/00 ,  F02P5/00 ,  G06G7/70

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

摘要： A device and associated method for controlling ignition timing of an internal combustion engine are provided. By comparing a determination value and knock magnitude, determination of knocking is made, and ignition timing is advanced or retarded. The device includes an operation unit that sets a correction amount of the determination value to a value corresponding to a degree of change of the determination value over time. The operation unit calculates, at a first timing, a first value related to an average value of the determination values; and calculates, at a second timing later than the first timing, a second value related to the average value of the determination values. The degree of change of the determination value is calculated as a difference between the first value and the second value.

摘要翻译： 提供了一种用于控制内燃机的点火正时的装置和相关方法。 通过比较确定值和爆震震级，进行爆震判定，点火正时提前或延迟。 该装置包括操作单元，该操作单元将确定值的校正量设置为与随时间的确定值的变化程度相对应的值。 操作单元在第一定时计算与所述确定值的平均值相关的第一值; 并且在比所述第一定时晚的第二定时计算与所述确定值的平均值相关的第二值。 将判定值的变化程度计算为第一值与第二值之差。

公开(公告)号：US20100162795A1

公开(公告)日：2010-07-01

申请号：US12602286

申请日：2008-05-27

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

发明人： Rihito Kaneko ,  Kenji Kasashima ,  Masatomo Yoshihara ,  Kenji Senda ,  Norihito Hanai ,  Yasuhiro Yamasako ,  Yuichi Takemura

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 magnitude of vibration of an engine (S 102); detecting a vibration waveform of the engine based on the magnitude (S 104); calculating a correlation coefficient K, in the case where the engine speed NE is smaller than a threshold value NE (1), using the sum of values each determined by subtracting a positive reference value from a magnitude of a knock waveform model, as an area S of the knock waveform model and, calculating the correlation coefficient K, in the case where the engine speed NE is not smaller than the threshold value NE (1), using the area S of the whole knock waveform model (S114); and determining whether or not knocking has occurred using the correlation coefficient K (S 120, S 124). The correlation coefficient K is calculated by dividing by the area S the sum of differences that are each the difference between the magnitude on the vibration waveform and the magnitude on the knock waveform model.

摘要翻译： 发动机ECU执行包括以下步骤的程序：检测发动机的振动的大小（S102）; 基于大小检测发动机的振动波形（S104）; 在使用通过从爆震波形模型的大小中减去正的基准值而确定的值的和的总和，在发动机转速NE小于阈值NE（1）的情况下，计算相关系数K作为区域 并且使用整个爆震波形模型的区域S，在发动机转速NE不小于阈值NE（1）的情况下计算相关系数K）（S114）。 以及使用所述相关系数K确定是否已经发生了敲击（S 120，S 124）。 通过将面积S除以振动波形上的大小与爆震波形模型上的大小之间的差值之差，来计算相关系数K.

公开(公告)号：US20070084266A1

公开(公告)日：2007-04-19

申请号：US11475230

申请日：2006-06-27

申请人： Rihito Kaneko ,  Kenji Kasashima ,  Masatomo Yoshihara ,  Koji Aso ,  Kenji Senda ,  Shigeru Kamio ,  Yuichi Takemura

发明人： Rihito Kaneko ,  Kenji Kasashima ,  Masatomo Yoshihara ,  Koji Aso ,  Kenji Senda ,  Shigeru Kamio ,  Yuichi Takemura

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

CPC分类号： F02D35/027 ,  G01L23/225

摘要： An engine ECU executes a program including the steps of: calculating a correlation coefficient K based on the result of comparing a vibration waveform of an engine and a knock waveform model stored previously; calculating a magnitude value LOG(V) from the magnitude V detected based on a signal transmitted from a knock sensor; creating frequency distribution of magnitude values LOG(V) by using magnitude values LOG(V) in an ignition cycle in which the correlation coefficient K larger than a threshold K(1) is calculated; and counting knock proportion KC by using the created frequency distribution. If the vibration waveform includes a waveform of vibration of noise components, the correlation coefficient K is calculated to be smaller comparing with a case of not including it.

摘要翻译： 发动机ECU执行程序，包括以下步骤：基于比较发动机的振动波形和先前存储的爆震波形模型的结果来计算相关系数K; 从根据从爆震传感器发送的信号检测到的幅值V计算幅度值LOG（V）; 通过使用大于阈值K（1）的相关系数K的点火循环中的幅度值LOG（V）来产生幅度值LOG（V）的频率分布; 并使用创建的频率分布计数爆震比例KC。 如果振动波形包括噪声成分的振动波形，则与不包含噪声成分的情况相比，相关系数K被计算得较小。

公开(公告)号：US20070012090A1

公开(公告)日：2007-01-18

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 ,  G01M15/12

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：US07043353B2

公开(公告)日：2006-05-09

申请号：US11106581

申请日：2005-04-15

申请人： Yuichi Takemura ,  Satoshi Masuda ,  Masaomi Inoue ,  Kenji Kasashima ,  Rihito Kaneko

发明人： Yuichi Takemura ,  Satoshi Masuda ,  Masaomi Inoue ,  Kenji Kasashima ,  Rihito Kaneko

IPC分类号： G01L23/22

CPC分类号： G01L23/225

摘要： A plurality of variables representing the characteristics of a knock is obtained from an output signal of a sensor. The variables include a peak value of the knock frequency component in the output signal of the sensor and a waveform correlation coefficient representing the correlation between the waveform of the output signal and an ideal knock waveform, which is the waveform specific to a knock. The peak value and the waveform correlation coefficient are normalized, and a detection distribution is created using the obtained normalized data values. A correlation coefficient for knock determination representing the correlation between the detection distribution and an ideal knock distribution is calculated. The correlation coefficient for knock determination is compared with a predetermined knock determination threshold value, and the knock determination threshold value is corrected in accordance with the comparison result. As a result, the accuracy and the reliability of knock determination are improved.

摘要翻译： 从传感器的输出信号获得表示爆震特性的多个变量。 这些变量包括传感器的输出信号中的爆震频率分量的峰值和表示输出信号的波形与理想爆震波形之间的相关性的波形相关系数，其是敲击特有的波形。 将峰值和波形相关系数归一化，并使用所获得的归一化数据值创建检测分布。 计算表示检测分布与理想爆震分布之间的相关性的爆震确定的相关系数。 将爆震确定的相关系数与预定的爆震判定阈值进行比较，并根据比较结果校正爆震判定阈值。 结果，提高了敲击确定的精度和可靠性。

公开(公告)号：US08005607B2

公开(公告)日：2011-08-23

申请号：US12095988

申请日：2006-12-04

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

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

IPC分类号： F02P5/152 ,  G06F19/00 ,  H03F1/26

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

摘要： An engine ECU executes a program that includes: calculating a median value and a standard deviation based on a calculated value based on the detected vibration of the engine; and subtracting a product of the standard deviation and a coefficient from the median value to calculate a magnitude of mechanical vibration specific to the engine. Knocking determination is carried out by comparing a knock magnitude calculated by dividing the magnitude value of the peak magnitude of the detected vibration of the engine by the magnitude of mechanical vibration specific to the engine with a predetermined determination value. Based on the knocking determination result, ignition timing of the engine is controlled.

摘要翻译： 发动机ECU执行程序，其包括：基于检测到的发动机的振动，基于计算值来计算中值和标准偏差; 并从中值减去标准偏差乘积和系数，计算出发动机特有的机械振动的大小。 通过将通过将发动机的检测振动的峰值的幅度值除以预定的确定值的发动机特有的机械振动的大小来计算的敲击量进行敲击确定。 基于敲击判定结果，控制发动机的点火正时。

公开(公告)号：US07653477B2

公开(公告)日：2010-01-26

申请号：US12162202

申请日：2007-01-24

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

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

IPC分类号： G06F19/00 ,  F02P5/152

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

摘要： An engine ECU executes a program including: determining whether or not a condition for stopping knocking determination is satisfied; setting a flag of stopping correction of a determination value to “ON”; calculating a knock determination level based on the extracted magnitude value; and when the correction stop flag is not “ON”, decreasing or increasing the determination value in accordance with a knock proportion KC that is a proportion of magnitude values greater than the knock determination level. The knock determination level is calculated even when the correction stop flag is “ON”.

摘要翻译： 发动机ECU执行程序，包括：确定是否满足停止敲击确定的条件; 将确定值的停止校正的标志设置为“ON”; 基于所提取的幅度值计算爆震判定水平; 并且当校正停止标志不是“ON”时，根据比敲击判定水平大的幅度值的比例的敲击比例KC来减小或增加判定值。 即使校正停止标志为“ON”，也可以计算爆震判定水平。

公开(公告)号：US20080294328A1

公开(公告)日：2008-11-27

申请号：US12092004

申请日：2007-10-01

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

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

IPC分类号： G01L23/22 ,  G06F19/00

CPC分类号： G01L23/225 ,  F02D2041/1432 ,  F02D2041/1433 ,  F02P5/152 ,  Y02T10/46

摘要： An engine ECU executes a program including: the step (S222) of increasing a determination value V(J) by a correction amount A(3) if the number of knock intensities N not lower than the determination value V(J) is not smaller than a threshold value B(1) (YES at S220) among knock intensities N of a plurality of predetermined number of continuous ignition cycles; and the step (S232) of increasing the determination value V(J) by a correction amount A(5) if the number of knock intensities N not smaller than the determination value V(J) is not smaller than a threshold value B(3) (YES at S230), among knock intensities N of a plurality of ignition cycles satisfying the condition that a coefficient of correlation K calculated by comparing a vibration waveform and a knock waveform model is not smaller than a threshold value K(1), of the knock intensities of a plurality of predetermined continuous ignition cycles.

摘要翻译： 发动机ECU执行程序，包括：如果不低于确定值V（J）的爆震强度N的数目不小于将确定值V（J）增加校正量A（3）的步骤（S222） 在多个预定数量的连续点火循环的爆震强度N之间超过阈值B（1）（S220处的“是”）。 如果不小于确定值V（J）的爆震强度N的数量不小于阈值B（3），则将确定值V（J）增加校正量A（5）的步骤（S232） ）（S230中为“是”），在满足通过比较振动波形和爆震波形模型而计算的相关系数K不小于阈值K（1）的条件的多个点火循环的爆震强度N中， 多个预定的连续点火循环的爆震强度。

公开(公告)号：US07424820B2

公开(公告)日：2008-09-16

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 ,  F01P5/14

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）。