公开(公告)号：US07356404B2

公开(公告)日：2008-04-08

申请号：US11521379

申请日：2006-09-15

申请人： Yuichi Takemura ,  Kenji Kasashima ,  Rihito Kaneko

发明人： Yuichi Takemura ,  Kenji Kasashima ,  Rihito Kaneko

IPC分类号： F06F19/00 ,  G01L23/22 ,  F02P5/00

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

摘要： In determining a knock of an engine, a vibration intensity is calculated by logarithm-transforming a peak value or an integral value of an output signal of a knock sensor. Further, a central value VMED of a vibration intensity distribution is calculated, and also a standard deviation σ in a region where the vibration intensity is smaller than this central value VMED is calculated. A vibration intensity reference value VIB is calculated as VMED−u×σ, thereby setting the vibration intensity reference value VIB to be close to a minimum of the vibration intensity distribution. Further, a knock reference value KCK is set by adding a predetermined value K to the vibration intensity reference value VIB. The vibration intensity detected by the knock sensor is compared with the knock reference value KCK to determine presence/absence of a knocking.

摘要翻译： 在确定发动机爆震时，通过对数变换爆震传感器的输出信号的峰值或积分值来计算振动强度。 此外，计算振动强度分布的中心值VMED，并且计算振动强度小于该中心值VMED的区域中的标准偏差σigma。 计算振动强度基准值VIB作为VMED-uxsigma，从而将振动强度基准值VIB设定为接近振动强度分布的最小值。 此外，通过将预定值K加到振动强度参考值VIB来设定爆震参考值KCK。 将爆震传感器检测到的振动强度与爆震参考值KCK进行比较，以确定爆震的存在/不存在。

公开(公告)号：US20070214869A1

公开(公告)日：2007-09-20

申请号：US11684786

申请日：2007-03-12

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： G01L23/22

CPC分类号： G01L23/225

摘要： An engine ECU executes a program including a step of, when it has temporarily been determined that knocking had occurred because of the presence of an integrated value greater than a product of the reference magnitude and coefficient Y among the integrated values of vibration in fourth frequency band D that includes first to third frequency bands A to C, calculating knock magnitude N using the integrated values in the synthesized waveform of first to third frequency bands A to C and correlation coefficient K calculated from a vibration waveform of fourth frequency band D. Based on a comparison between knock magnitude N and determination value V(KX), whether or not knocking has occurred is determined. If there is no integrated value greater than a product of the reference magnitude and coefficient Y, it is determined that knocking has not occurred.

摘要翻译： 发动机ECU执行程序，该程序包括当暂时确定由于存在大于第四频带振动的积分值中的参考幅度和系数Y的乘积的积分值而发生敲门时的步骤 D，其包括第一至第三频带A至C，使用第一至第三频带A至C的合成波形中的积分值和根据第四频带D的振动波形计算的相关系数K计算爆震振幅N.基于 确定敲击量N与判定值V（KX）之间的比较，确定是否发生了敲击。 如果没有大于参考幅度和系数Y的乘积的积分值，则确定未发生爆震。

公开(公告)号：US20070175444A1

公开(公告)日：2007-08-02

申请号：US11627133

申请日：2007-01-25

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

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

IPC分类号： F02P5/00

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

摘要： An engine ECU executes a program including a step of, when an absolute value of a difference between a determination value V(KX) used for determining presence or absence of knocking and a maximum value V(MAX) of magnitude value LOG(V), which is obtained by logarithmically converting a magnitude V detected based on a signal sent from a knock sensor, is greater than the product of a standard deviation σ and a coefficient U(3) in a frequency distribution of magnitude values LOG(V) for N cycle(s), setting a value obtained by adding the product of the standard deviation σ and the coefficient U(3) to the maximum value V(MAX) of the magnitude value LOG(V) as the determination value V(KX).

摘要翻译： 发动机ECU执行程序，其包括以下步骤：当用于确定是否存在敲击的判定值V（KX）与幅度值LOG（V）的最大值V（MAX）之间的差的绝对值时， 其通过对数变换基于从爆震传感器发送的信号检测到的幅度V而获得的大于对于N的幅度值LOG（V）的频率分布的标准偏差σ和系数U（3）的乘积 将通过将标准偏差σ和乘积（U）（3）乘以幅值Log（V）的最大值V（MAX）而得到的值设定为确定值V（KX）。

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：US20060185422A1

公开(公告)日：2006-08-24

申请号：US11348332

申请日：2006-02-07

申请人： Kiyoshi Iwade ,  Shuhei Oe ,  Nobuyuki Murate ,  Rihito Kaneko ,  Yuichi Takemura

发明人： Kiyoshi Iwade ,  Shuhei Oe ,  Nobuyuki Murate ,  Rihito Kaneko ,  Yuichi Takemura

IPC分类号： G01L23/22

CPC分类号： G01L23/225

摘要： An engine ECU includes: an A/D (Analog/Digital) converter converting an analog signal transmitted from a knock sensor provided at a cylinder block into a digital signal; a bandpass filter passing only a vibration of a third order tangential resonance mode frequency band; and a bandpass filter passing only a vibration of a fourth order tangential resonance mode frequency band. The engine ECU determines whether the engine knocks, as based on the vibration selected by means of the bandpass filter or bandpass filter.

摘要翻译： 发动机ECU包括：A / D（模拟/数字）转换器，将设置在气缸体处的爆震传感器的模拟信号转换为数字信号; 仅通过三阶切向谐振模式频带的振动的带通滤波器; 以及仅通过四阶切向谐振模式频带的振动的带通滤波器。 发动机ECU基于通过带通滤波器或带通滤波器选择的振动来确定发动机是否爆震。

公开(公告)号：US20050000272A1

公开(公告)日：2005-01-06

申请号：US10866248

申请日：2004-06-14

申请人： Yuichi Takemura ,  Masaomi Inoue

发明人： Yuichi Takemura ,  Masaomi Inoue

IPC分类号： G01H17/00 ,  F02D45/00 ,  G01L23/22 ,  G01M15/00

CPC分类号： G01L23/225

摘要： A waveform knock signal detected by a knock sensor is filtered through a band-pass filter. The detected wave form signal is compared with an ideal reference knock waveform to determine an engine knock. The ideal reference knock waveform is derived on the basis of a factor depending on a crank angle, a factor depending on a real time and a factor depending on an engine construction. The factor depending on the real time is calculated based on an energy loss in a combustion chamber and a time constant of the band-pass filter. The factor depending on the engine construction is calculated based on a knock vibration which is generated in a cylinder, transferred to a cylinder block and detected by the knock sensor.

摘要翻译： 由爆震传感器检测到的波形爆震信号通过带通滤波器进行滤波。 将检测到的波形信号与理想的参考爆震波形进行比较以确定发动机爆震。 基于取决于曲柄角的因子，取决于实际的因子和取决于发动机构造的因子导出理想的参考爆震波形。 取决于实时的因素基于燃烧室中的能量损失和带通滤波器的时间常数来计算。 取决于发动机构造的因素是基于在气缸中产生的爆震振动来计算的，转移到气缸体并由爆震传感器检测。

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。