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：US06910461B2

公开(公告)日：2005-06-28

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 ,  F01L13/00

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.

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：US08447493B2

公开(公告)日：2013-05-21

申请号：US13131959

申请日：2009-11-20

申请人： Akito Onishi ,  Takashi Yoshida ,  Jun Aoki ,  Tomohiro Kisaku ,  Hiroto Tanaka ,  Rihito Kaneko ,  Kenji Senda

发明人： Akito Onishi ,  Takashi Yoshida ,  Jun Aoki ,  Tomohiro Kisaku ,  Hiroto Tanaka ,  Rihito Kaneko ,  Kenji Senda

IPC分类号： F02P5/152

CPC分类号： F02D41/2445 ,  F02D19/0628 ,  F02D19/0649 ,  F02D19/088 ,  F02D35/027 ,  F02D41/0025 ,  F02D41/2448 ,  F02D41/2451 ,  F02D41/248 ,  F02D2200/0612 ,  F02P5/152 ,  Y02T10/36 ,  Y02T10/46

摘要： The apparatus of the present invention corrects a control target value of ignition timing using a multipoint learned value AGdp(n) for compensating for a change amount of the ignition timing caused by time-dependent change of the engine and a basic learned value AG(i) for compensating for a change amount of the ignition timing caused by a factor other than the aforementioned time-dependent change of the engine. In a multipoint learning range n in which the time-dependent change of the engine influences the ignition timing to a great extent, the control target is corrected using the multipoint learned value AGdp(n) and the basic learned value AG(i). In ranges other than the multipoint learning range n, the control target is corrected using only the basic learned value AG(i). Normally, only the learning of the multipoint learned value AGdp(n) is permitted in the multipoint learning range n, and only the learning of the basic learned value AG(i) is permitted in the ranges other than the multipoint learning range n. When it is determined that there is a possibility that fuel has been fed to a fuel tank, the learning of the multipoint learned value AGdp(n) is prohibited for a subsequent predetermined period (if NO in step S103 or step S104).

摘要翻译： 本发明的装置使用多点学习值AGdp（n）来校正点火正时的控制目标值，用于补偿由发动机的时间变化引起的点火正时变化量和基本学习值AG（i ），用于补偿由除了上述发动机的时间变化之外的因素引起的点火正时变化量。 在发动机的时间相关变化很大程度上影响点火正时的多点学习范围n中，使用多点学习值AGdp（n）和基本学习值AG（i）来校正控制对象。 在多点学习范围n以外的范围内，仅使用基本学习值AG（i）来校正控制对象。 通常，在多点学习范围n中仅允许多点学习值AGdp（n）的学习，并且在除了多点学习范围n以外的范围内仅允许学习基础学习值AG（i）。 当确定燃料已经被供给到燃料箱的可能性时，多个学习值AGdp（n）的学习在随后的预定时间段被禁止（如果在步骤S103或步骤S104中为否）。

公开(公告)号：US20090120410A1

公开(公告)日：2009-05-14

申请号：US12263216

申请日：2008-10-31

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

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

IPC分类号： F02P5/15

CPC分类号： F02P5/152 ,  G01M15/042 ,  Y02T10/46

摘要： A 90° integrated value calculating unit of an engine ECU calculates a 90° integrated value obtained by integrating a magnitude. A calculating unit calculates a knock magnitude by dividing 90° integrated value by a BGL. A value obtained by subtracting a standard deviation σ from a median value of 90° integrated value is determined as the BGL. An ignition timing control unit controls the ignition timing depending on whether knock magnitude is equal to or larger than a determination value. A median value calculating unit calculates median value of 90° integrated value. A standard deviation calculating unit calculates standard deviation of 90° integrated value. A first stop unit stops updating of median value and standard deviation when 90° integrated value is smaller than a first threshold value or is equal to or larger than a second threshold value.

摘要翻译： 发动机ECU的90°积分值计算单元计算通过积分大小获得的90°积分值。 计算单元通过将90°积分值除以BGL来计算敲击量。 通过从90°积分值的中值减去标准偏差σ获得的值被确定为BGL。 点火正时控制单元根据爆震量是否等于或大于判定值来控制点火正时。 中值计算单元计算90°积分值的中值。 标准偏差计算单元计算90°积分值的标准偏差。 当90°积分值小于第一阈值或等于或大于第二阈值时，第一停止单元停止中值和标准偏差的更新。

公开(公告)号：US20090217908A1

公开(公告)日：2009-09-03

申请号：US12395877

申请日：2009-03-02

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

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

IPC分类号： F02P5/152 ,  F01L1/34 ,  F02D43/00

CPC分类号： F02P5/1525 ,  F01L1/34 ,  F01L13/00 ,  F02P5/152 ,  G01L23/225 ,  Y02T10/46

摘要： An engine ECU executes a program including the steps of: calculating a knock magnitude N by dividing an integrated value lpkknk obtained by integrating the magnitude of vibration in the knock detection gate by BGL; controlling ignition timing according to a result of comparison between knock magnitude N and a determination value VJ; stopping updating of a standard deviation σ when it is determined that determination value VJ to be compared with knock magnitude N is to be changed; updating a median value VM by increasing an update amount of median value VM; and updating BGL according to median value VM and standard deviation σ.

摘要翻译： 发动机ECU执行程序，包括以下步骤：通过将通过将爆震检测门中的振动的积分积分得到的积分值lpkknk除以BGL来计算爆震大小N; 根据敲击量N与判定值VJ的比较结果控制点火正时; 当确定要与敲击量N进行比较的确定值VJ被改变时，停止标准偏差σ的更新; 通过增加中值VM的更新量来更新中值VM; 并根据中值VM和标准偏差σ更新BGL。

公开(公告)号：US08301360B2

公开(公告)日：2012-10-30

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 ,  F02D45/00 ,  G01M15/12 ,  F02P5/152

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：US08145411B2

公开(公告)日：2012-03-27

申请号：US12395877

申请日：2009-03-02

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

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

IPC分类号： G06F19/00 ,  F02P5/152

CPC分类号： F02P5/1525 ,  F01L1/34 ,  F01L13/00 ,  F02P5/152 ,  G01L23/225 ,  Y02T10/46

摘要： An engine ECU executes a program including the steps of: calculating a knock magnitude N by dividing an integrated value lpkknk obtained by integrating the magnitude of vibration in the knock detection gate by BGL; controlling ignition timing according to a result of comparison between knock magnitude N and a determination value VJ; stopping updating of a standard deviation σ when it is determined that determination value VJ to be compared with knock magnitude N is to be changed; updating a median value VM by increasing an update amount of median value VM; and updating BGL according to median value VM and standard deviation σ.

摘要翻译： 发动机ECU执行程序，包括以下步骤：通过将通过将爆震检测门中的振动的积分积分得到的积分值lpkknk除以BGL来计算爆震大小N; 根据敲击量N与判定值VJ的比较结果控制点火正时; 停止更新标准差 当确定要与敲击量N进行比较的确定值VJ被改变时; 通过增加中值VM的更新量来更新中值VM; 并根据中值VM和标准偏差来更新BGL。

公开(公告)号：US20110257865A1

公开(公告)日：2011-10-20

申请号：US13131959

申请日：2009-11-20

申请人： Akito Onishi ,  Takashi Yoshida ,  Jun Aoki ,  Tomohiro Kisaku ,  Hiroto Tanaka ,  Rihito Kaneko ,  Kenji Senda

发明人： Akito Onishi ,  Takashi Yoshida ,  Jun Aoki ,  Tomohiro Kisaku ,  Hiroto Tanaka ,  Rihito Kaneko ,  Kenji Senda

IPC分类号： F02D45/00

CPC分类号： F02D41/2445 ,  F02D19/0628 ,  F02D19/0649 ,  F02D19/088 ,  F02D35/027 ,  F02D41/0025 ,  F02D41/2448 ,  F02D41/2451 ,  F02D41/248 ,  F02D2200/0612 ,  F02P5/152 ,  Y02T10/36 ,  Y02T10/46

摘要： The apparatus of the present invention corrects a control target value of ignition timing using a multipoint learned value AGdp(n) for compensating for a change amount of the ignition timing caused by time-dependent change of the engine and a basic learned value AG(i) for compensating for a change amount of the ignition timing caused by a factor other than the aforementioned time-dependent change of the engine. In a multipoint learning range n in which the time-dependent change of the engine influences the ignition timing to a great extent, the control target is corrected using the multipoint learned value AGdp(n) and the basic learned value AG(i). In ranges other than the multipoint learning range n, the control target is corrected using only the basic learned value AG(i). Normally, only the learning of the multipoint learned value AGdp(n) is permitted in the multipoint learning range n, and only the learning of the basic learned value AG(i) is permitted in the ranges other than the multipoint learning range n. When it is determined that there is a possibility that fuel has been fed to a fuel tank, the learning of the multipoint learned value AGdp(n) is prohibited for a subsequent predetermined period (if NO in step S103 or step S104).

摘要翻译： 本发明的装置使用多点学习值AGdp（n）来校正点火正时的控制目标值，用于补偿由发动机的时间变化引起的点火正时变化量和基本学习值AG（i ），用于补偿由除了上述发动机的时间变化之外的因素引起的点火正时变化量。 在发动机的时间相关变化很大程度上影响点火正时的多点学习范围n中，使用多点学习值AGdp（n）和基本学习值AG（i）来校正控制对象。 在多点学习范围n以外的范围内，仅使用基本学习值AG（i）来校正控制对象。 通常，在多点学习范围n中仅允许多点学习值AGdp（n）的学习，并且在除了多点学习范围n以外的范围内仅允许基本学习值AG（i）的学习。 当确定燃料已经被供给到燃料箱的可能性时，多个学习值AGdp（n）的学习在随后的预定时间段被禁止（如果在步骤S103或步骤S104中为否）。