公开(公告)号：US20070000307A1

公开(公告)日：2007-01-04

申请号：US11471682

申请日：2006-06-21

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

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

IPC分类号： G01L23/22

CPC分类号： G01L23/225

摘要： An engine ECU 200 includes a bandpass filter (1), a bandpass filter (2), and a bandpass filter (3). The bandpass filter (1) extracts only vibrations at a first frequency band A from the vibrations detected by a knock sensor. The bandpass filter (2) extracts only vibrations at a second frequency band B from the vibrations detected by the knock sensor. The bandpass filter (3) extracts only vibrations at a third frequency band C from the vibrations detected by the knock sensor. The first to third frequency bands A-C are identical in bandwidth. The engine ECU calculates a peak value in magnitude of vibrations in a synthesized waveform of these frequency bands, and determines whether knocking occurred or not based on the peak value.

摘要翻译： 发动机ECU200包括带通滤波器（1），带通滤波器（2）和带通滤波器（3）。 带通滤波器（1）仅从由爆震传感器检测到的振动中仅提取第一频带A的振动。 带通滤波器（2）仅从由爆震传感器检测到的振动中仅提取第二频带B处的振动。 带通滤波器（3）仅从由爆震传感器检测到的振动中仅提取第三频带C处的振动。 第一至第三频带A-C的带宽相同。 发动机ECU以这些频带的合成波形计算振动幅度的峰值，根据峰值判定是否发生爆震。

公开(公告)号：US20060288982A1

公开(公告)日：2006-12-28

申请号：US11471540

申请日：2006-06-21

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： F02P5/152

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

摘要： An engine ECU executes a program including a step of calculating intensity values LOG(V), a step of detecting vibration waveforms, a step of calculating a correlation coefficient K based on vibration waveforms, a step of preparing frequency distribution of intensity values LOG(V) smaller than a threshold V(1) and intensity values LOG(V) in an ignition cycle where correlation coefficient K is larger than a threshold K(1), a step of calculating a knock determination level V(KD) based on a median V(50) and a standard deviation σ of intensity values LOG(V), and a step of counting the number of intensity values LOG(V) larger than knock determination level V(KD) as the number of times that knocking has occurred.

摘要翻译： 发动机ECU执行包括计算强度值LOG（V），检测振动波形的步骤，基于振动波形计算相关系数K的步骤的程序，准备强度值LOG（V）的频率分布的步骤 ），其中相关系数K大于阈值K（1）的点火循环中的阈值V（1）和强度值LOG（V）;基于中值的计算爆震判定水平V（KD）的步骤 V（50）和强度值LOG（V）的标准偏差σ，以及作为敲击发生次数的大于爆震判定水平V（KD）的强度值LOG（V）的数量的计数步骤。

公开(公告)号：US20060288981A1

公开(公告)日：2006-12-28

申请号：US11452313

申请日：2006-06-14

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： F02P5/152

CPC分类号： F02P5/1523 ,  F02P5/1527 ,  Y02T10/46

摘要： An engine ECU executes a program including the steps of: comparing a vibration waveform of an engine and a knock waveform model stored in advance to calculate a correlation coefficient K; prohibiting correction when a correction prohibiting condition of a determination value V(KX) is satisfied, the determination value V(KX) compared with a knock magnitude N calculated from the correlation coefficient K so as to control the ignition timing; and correcting the determination value V(KX) based on a magnitude value LOG(V) calculated from a magnitude V of vibration in an ignition cycle in which the correlation coefficient K greater than a threshold value K(1) is calculated when the correction prohibiting condition of determination value V(KX) is not satisfied. The correlation coefficient K is calculated as a smaller value when the vibration waveform includes a waveform of vibration of a noise component as compared with that when the vibration waveform does not include it.

摘要翻译： 发动机ECU执行程序，包括以下步骤：比较发动机的振动波形和预先存储的爆震波形模型，以计算相关系数K; 当满足确定值V（KX）的校正禁止条件时，禁止校正，与根据相关系数K计算的爆震大小N相比较的判定值V（KX）以控制点火正时; 并且基于从在校正禁止中计算相关系数K大于阈值K（1）的点火周期中的振动幅度V计算的幅度值LOG（V）来校正确定值V（KX） 判定值V（KX）的条件不满足。 与振动波形不包含振动波形的振动波形相比，当振动波形包括噪声分量的振动波形时，相关系数K被计算为较小的值。

公开(公告)号：US08302462B2

公开(公告)日：2012-11-06

申请号：US12676161

申请日：2008-07-28

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 operations including: extracting vibration intensities of a plurality of frequency bands from vibration detected by a knock sensor, multiplying the extracted vibration intensity of each frequency band by a weight coefficient and adding the results in correspondence with crank angles to calculate integrated values of every five degrees; calculating a coefficient of correlation based on a result of comparison between a vibration waveform of a frequency band and a knock waveform model prepared in advance; calculating a knock intensity; determining occurrence of knocking in accordance with the calculated coefficient of correlation and the knock intensity; and determining no occurrence of knocking in accordance with the calculated coefficient of correlation and the knock intensity.

摘要翻译： 发动机ECU执行以下操作：包括：从由爆震传感器检测的振动中提取多个频带的振动强度，将每个频带的提取的振动强度乘以权重系数，并将结果与​​曲柄角相对应，以计算积分值 每五度; 基于频带的振动波形与预先准备的爆震波形模型的比较结果，计算相关系数; 计算爆震强度; 根据计算的相关系数和爆震强度确定爆震的发生; 并根据计算的相关系数和爆震强度确定不发生爆震。

公开(公告)号：US07281516B2

公开(公告)日：2007-10-16

申请号：US11452313

申请日：2006-06-14

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： F02P5/152

CPC分类号： F02P5/1523 ,  F02P5/1527 ,  Y02T10/46

摘要： An engine ECU executes a program including the steps of: comparing a vibration waveform of an engine and a knock waveform model stored in advance to calculate a correlation coefficient K; prohibiting correction when a correction prohibiting condition of a determination value V(KX) is satisfied, the determination value V(KX) compared with a knock magnitude N calculated from the correlation coefficient K so as to control the ignition timing; and correcting the determination value V(KX) based on a magnitude value LOG(V) calculated from a magnitude V of vibration in an ignition cycle in which the correlation coefficient K greater than a threshold value K(1) is calculated when the correction prohibiting condition of determination value V(KX) is not satisfied. The correlation coefficient K is calculated as a smaller value when the vibration waveform includes a waveform of vibration of a noise component as compared with that when the vibration waveform does not include it.

摘要翻译： 发动机ECU执行程序，包括以下步骤：比较发动机的振动波形和预先存储的爆震波形模型，以计算相关系数K; 当满足确定值V（KX）的校正禁止条件时，禁止校正，与根据相关系数K计算的爆震大小N相比较的判定值V（KX）以控制点火正时; 并且基于从在校正禁止中计算相关系数K大于阈值K（1）的点火周期中的振动幅度V计算的幅度值LOG（V）来校正确定值V（KX） 判定值V（KX）的条件不满足。 与振动波形不包含振动波形的振动波形相比，当振动波形包括噪声分量的振动波形时，相关系数K被计算为较小的值。

公开(公告)号：US07181338B2

公开(公告)日：2007-02-20

申请号：US11302318

申请日：2005-12-14

申请人： Yuichi Takemura ,  Rihito Kaneko ,  Kenji Kasashima

发明人： Yuichi Takemura ,  Rihito Kaneko ,  Kenji Kasashima

IPC分类号： F02P5/152 ,  G01L23/22

CPC分类号： G01L23/225

摘要： For each predetermined crank angular interval, an output of a knock sensor is separated into a plurality of frequency components through a plurality of band-pass filters, and peak values of each frequency component are extracted. Then, a mean and a variance of the peak values are computed for each frequency component. A maximum one of the computed means is selected, and the corresponding frequency component, which is associated with the maximum mean, is selected. It is then determined whether the noise is present based on a ratio between the variance of the selected frequency component and the corresponding mean. If the noise is detected in any of the frequency components, execution of knock determination may be prohibited, or ignition timing feedback control according to a result of the knock determination may be prohibited, or ignition timing may be corrected by retarding the ignition timing.

摘要翻译： 对于每个预定的曲柄角间隔，通过多个带通滤波器将爆震传感器的输出分离成多个频率分量，并且提取每个频率分量的峰值。 然后，针对每个频率分量计算峰值的平均值和方差。 选择计算出的装置中最大的一个，并且选择与最大平均值相关联的对应的频率分量。 然后根据所选择的频率分量的方差与相应的平均值之间的比率确定噪声是否存在。 如果在任何频率分量中检测到噪声，则可以禁止执行爆震判定，或者可以禁止根据爆震判定结果的点火定时反馈控制，或者可以通过延迟点火正时来校正点火正时。

公开(公告)号：US20050234633A1

公开(公告)日：2005-10-20

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： F02P17/12 ,  F02D45/00 ,  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：US09926879B2

公开(公告)日：2018-03-27

申请号：US14890332

申请日：2014-05-07

申请人： Tomohiro Nakano ,  Eiji Murase ,  Rihito Kaneko

发明人： Tomohiro Nakano ,  Eiji Murase ,  Rihito Kaneko

IPC分类号： F02D41/40 ,  F02D41/20 ,  F02D41/24 ,  F02M63/00 ,  H01F7/18

CPC分类号： F02D41/40 ,  F02D41/20 ,  F02D41/2467 ,  F02D2041/2055 ,  F02D2041/2058 ,  F02D2200/0602 ,  F02M63/0017 ,  H01F7/1844

摘要： An electronic control unit that calculates an injection standby period, which is a period from an energization start point of the solenoid to a point at which the fuel injection valve opens, and adjusts an energization period of the solenoid in accordance with the calculated injection standby period. The electronic control unit of the control apparatus for a fuel injection valve then measures a reference fall detection period, which is a period from the energization start point to a reference fall detection point, and sets the injection standby period to be longer as the reference fall detection period is longer. Here, the reference fall detection point is a point at which the excitation current detected by the current detection circuit falls below a reference current value, which is smaller than a peak current value, while the excitation current decreases after reaching the peak current value.

公开(公告)号：US20110257872A1

公开(公告)日：2011-10-20

申请号：US12672731

申请日：2008-07-23

申请人： Satoshi Masuda ,  Rihito Kaneko ,  Satoshi Watanabe ,  Hiroto Tanaka ,  Kenji Senda ,  Norihito Hanai ,  Yasuhiro Yamasako

发明人： Satoshi Masuda ,  Rihito Kaneko ,  Satoshi Watanabe ,  Hiroto Tanaka ,  Kenji Senda ,  Norihito Hanai ,  Yasuhiro Yamasako

IPC分类号： G01L23/22

CPC分类号： G01L23/225

摘要： An output signal of a knock sensor is filtered with a plurality of band-pass filters to extract vibration waveform components of a plurality of frequency bands (f1-f4). Weighting coefficients (G1-G4) which multiply the vibration waveform component of each frequency band are established in such a manner as to be a small value as a noise intensity of each frequency band becomes larger. Thereby, the vibration waveform component of a plurality of frequency bands is synthesized by weighting according to an influence of a noise intensity of each frequency band. Even when the noise is superimposed on the vibration waveform component of any of the frequency bands, it becomes possible to reduce the influence of the noise and to synthesize the vibration waveform component of each frequency band, and an accurate knock determination can be performed based on the composite vibration waveform.

摘要翻译： 用多个带通滤波器对爆震传感器的输出信号进行滤波，以提取多个频带（f1-f4）的振动波形分量。 以每个频带的噪声强度变大的方式建立乘以每个频带的振动波形分量的加权系数（G1-G4），使其为小值。 由此，通过根据每个频带的噪声强度的影响进行加权来合成多个频带的振动波形分量。 即使当噪声叠加在任何频带的振动波形分量上时，也可以减小噪声的影响并合成每个频带的振动波形分量，并且可以基于 复合振动波形。

公开(公告)号：US20050005908A1

公开(公告)日：2005-01-13

申请号：US10845163

申请日：2004-05-14

申请人： Katsutoshi Tanei ,  Masanao Idogawa ,  Rihito Kaneko ,  Kenji Kasashima ,  Noboru Takagi ,  Isao Takagi

发明人： Katsutoshi Tanei ,  Masanao Idogawa ,  Rihito Kaneko ,  Kenji Kasashima ,  Noboru Takagi ,  Isao Takagi

IPC分类号： F02D13/02 ,  F02D35/02 ,  F02D37/02 ,  F02D43/00 ,  F02D45/00 ,  F02M25/07 ,  F02P5/152 ,  F02P5/153 ,  F02D43/04

CPC分类号： F02D13/0238 ,  F01L1/024 ,  F01L2001/0537 ,  F01L2001/34453 ,  F01L2800/00 ,  F02D13/0203 ,  F02D13/0261 ,  F02D35/02 ,  F02D35/027 ,  F02D37/02 ,  F02D41/006 ,  F02D2041/001 ,  F02M26/01 ,  F02P5/152 ,  Y02T10/18 ,  Y02T10/46 ,  Y02T10/47

摘要： Based on results of a knock control for adjusting ignition timing in accordance with the occurrence of knocking, an electronic control unit computes deposit required ignition timing akgrg, which is ignition timing determined by taking adhesion of deposits in an internal combustion engine into consideration. Based on the deposit required ignition timing akgrg, the electronic control unit reduces a vvt allowable variable range of a target VVT advancement amount, which is a control target value of a variable valve timing mechanism. The electronic control unit corrects a required ignition timing based on the actual VVT advancement amount vt, which is chanted according to the reduction of the allowable variable range of the target VVT advancement amount. As a result, problems resulting from the adhesion of deposits are effectively avoided.

摘要翻译： 基于根据爆震发生调整点火正时的爆震控制的结果，电子控制单元计算通过考虑内燃机中的沉积物附着而确定的点火正时定时点火正时akgrg。 基于所需的点火正时定时akgrg，电子控制单元减小作为可变气门正时机构的控制目标值的目标VVT提前量的vvt容许可变范围。 电子控制单元根据实际的VVT前进量vt，根据目标VVT前进量的容许可变范围的减少而进行颂歌来校正所需的点火正时。 结果，有效地避免了由于沉积物附着而产生的问题。