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：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：US20060236754A1

公开(公告)日：2006-10-26

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：US07251556B2

公开(公告)日：2007-07-31

申请号：US11312735

申请日：2005-12-21

申请人： Rihito Kaneko ,  Kenji Kasashima ,  Kenji Senda ,  Shigeru Kamio ,  Masaomi Inoue ,  Yuichi Takemura

发明人： Rihito Kaneko ,  Kenji Kasashima ,  Kenji Senda ,  Shigeru Kamio ,  Masaomi Inoue ,  Yuichi Takemura

IPC分类号： B60T7/12 ,  F02P5/00

CPC分类号： G01L23/225

摘要： An engine ECU executes a program including a step of calculating coefficient of correlation K that is a value related to a deviation between a vibration waveform and a knock waveform model by comparing the engine's vibration waveform with the knock waveform model stored in advance at a plurality of timings, a step of calculating a knock intensity N as based on a largest coefficient of correlation K among the calculated coefficient of correlation Ks, a step of determining that the engine knocks if knock intensity N is larger than a predetermined reference value (YES at S108), and a step of determining that the engine does not knock if knock intensity N is not larger than a predetermined reference value (NO at S108).

摘要翻译： 发动机ECU执行程序，该程序包括通过将发动机的振动波形与预先存储的多个爆震波形模型进行比较来计算与振动波形和爆震波形模型之间的偏差相关的值的相关系数K的步骤 定时，计算相关系数Ks中基于最大相关系数K的爆震强度N的步骤，如果爆震强度N大于预定参考值，则确定发动机敲击的步骤（在S处为是 108），以及如果爆震强度N不大于预定参考值（步骤S108为否），则确定发动机不会敲击的步骤。

公开(公告)号：US20060136117A1

公开(公告)日：2006-06-22

申请号：US11312735

申请日：2005-12-21

申请人： Rihito Kaneko ,  Kenji Kasashima ,  Kenji Senda ,  Shigeru Kamio ,  Masaomi Inoue ,  Yuichi Takemura

发明人： Rihito Kaneko ,  Kenji Kasashima ,  Kenji Senda ,  Shigeru Kamio ,  Masaomi Inoue ,  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 coefficient of correlation K that is a value related to a deviation between a vibration waveform and a knock waveform model by comparing the engine's vibration waveform with the knock waveform model stored in advance at a plurality of timings, a step of calculating a knock intensity N as based on a largest coefficient of correlation K among the calculated coefficient of correlation Ks, a step of determining that the engine knocks if knock intensity N is larger than a predetermined reference value (YES at S108), and a step of determining that the engine does not knock if knock intensity N is not larger than a predetermined reference value (NO at S108).

摘要翻译： 发动机ECU执行程序，该程序包括通过将发动机的振动波形与预先存储的多个爆震波形模型进行比较来计算与振动波形和爆震波形模型之间的偏差相关的值的相关系数K的步骤 定时，计算相关系数Ks中基于最大相关系数K的爆震强度N的步骤，如果爆震强度N大于预定参考值，则确定发动机敲击的步骤（在S处为是 108），以及如果爆震强度N不大于预定参考值（步骤S108为否），则确定发动机不会敲击的步骤。

公开(公告)号：US20050241369A1

公开(公告)日：2005-11-03

申请号：US11106546

申请日：2005-04-15

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

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

IPC分类号： F02P17/12 ,  F02D45/00 ,  G01L23/22

CPC分类号： G01L23/225

摘要： The signal levels of vibration waveform signals outputted by knock sensors are extracted at a filter processing section for each of a plurality of frequency bands. The mean value of the signal levels in the frequency bands at a point in time when variation of the signal levels in the frequency bands is minimum computed, and the mean value is detected as a background level. A knock characteristic parameter, which represents the characteristics of knock, is computed based on the extracted signal levels in the frequency bands. The knock characteristic parameter is compared with the background level to obtain a knock intensity. If the knock intensity is equal to or greater than a knock determination value, it is determined that knock that exceeds a permissible level is occurring. If the knock intensity is less than the knock determination value, it is determined that knock that exceeds the permissible level is not occurring. This configuration permits the background level of the output of the knock sensors to be accurately detected without being influenced by knock or noise.

摘要翻译： 对于多个频带中的每一个，在滤波处理部分提取由爆震传感器输出的振动波形信号的信号电平。 在频带中的信号电平的变化被计算的时间点的频带中的信号电平的平均值被计算，并且平均值被检测为背景电平。 基于在频带中提取的信号电平来计算表示爆震特性的爆震特征参数。 将敲击特征参数与背景水平进行比较以获得爆震强度。 如果敲击强度等于或大于爆震判定值，则确定发生超过允许水平的爆震。 如果爆震强度小于爆震判定值，则确定没有发生超过允许水平的爆震。 该配置允许在不受敲击或噪声影响的情况下精确地检测爆震传感器的输出的背景水平。

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。

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：US07347081B2

公开(公告)日：2008-03-25

申请号：US11106546

申请日：2005-04-15

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

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

IPC分类号： G01L23/22

CPC分类号： G01L23/225

摘要： The signal levels of vibration waveform signals outputted by knock sensors are extracted at a filter processing section for each of a plurality of frequency bands. The mean value of the signal levels in the frequency bands at a point in time when variation of the signal levels in the frequency bands is minimum computed, and the mean value is detected as a background level. A knock characteristic parameter, which represents the characteristics of knock, is computed based on the extracted signal levels in the frequency bands. The knock characteristic parameter is compared with the background level to obtain a knock intensity. If the knock intensity is equal to or greater than a knock determination value, it is determined that knock that exceeds a permissible level is occurring. If the knock intensity is less than the knock determination value, it is determined that knock that exceeds the permissible level is not occurring. This configuration permits the background level of the output of the knock sensors to be accurately detected without being influenced by knock or noise.

摘要翻译： 对于多个频带中的每一个，在滤波处理部分提取由爆震传感器输出的振动波形信号的信号电平。 在频带中的信号电平的变化被计算的时间点的频带中的信号电平的平均值被计算，并且平均值被检测为背景电平。 基于在频带中提取的信号电平来计算表示爆震特性的爆震特征参数。 将敲击特征参数与背景水平进行比较以获得爆震强度。 如果敲击强度等于或大于爆震判定值，则确定发生超过允许水平的爆震。 如果爆震强度小于爆震判定值，则确定没有发生超过允许水平的爆震。 该配置允许在不受敲击或噪声影响的情况下精确地检测爆震传感器的输出的背景水平。

公开(公告)号：US07219006B2

公开(公告)日：2007-05-15

申请号：US11487601

申请日：2006-07-17

申请人： Yuichi Takemura ,  Rihito Kaneko ,  Kenji Kasashima

发明人： Yuichi Takemura ,  Rihito Kaneko ,  Kenji Kasashima

IPC分类号： F02D45/00 ,  G06F19/00

CPC分类号： G01L23/225 ,  F02D35/027 ,  F02D41/22 ,  F02D2041/286 ,  F02P5/152

摘要： A knock determining apparatus includes a sensor which outputs a waveform signal corresponding to a knock state, and at least one of a first to a third knock determiner which determines a knock state based on a vibration intensity distribution of the waveform signal. A knock detector compares the vibration intensity of the waveform signal with a threshold, and detects a knock when the vibration intensity exceeds the threshold. This threshold is corrected based on a knock determining result by the first to the third knock determiner.