公开(公告)号：EP1896816A1

公开(公告)日：2008-03-12

申请号：EP06767568.6

申请日：2006-06-22

申请人： TOYOTA JIDOSHA KABUSHIKI KAISHA ,  Denso Corporation ,  NIPPON SOKEN, INC.

发明人： IWADE, Kiyoshi, c/o NIPPON SOKEN, INC. ,  MURATE, Nobuyuki, c/o NIPPON SOKEN, INC. ,  OE, Shuhei, c/o NIPPON SOKEN, INC. ,  KANEKO, Rihito ,  KASASHIMA, Kenji ,  TAKEMURA, Yuichi

IPC分类号： G01L23/22

CPC分类号： G01L23/225

摘要： An engine ECU executes a program including a step (S100) of calculating intensity values LOG(V) based on signals transmitted from a knock sensor; a step (S106) 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 (S110) of calculating a knock determination level V(KD) based on the frequency distribution; a step (S114) of, when the knock determination level V(KD) is smaller than the maximum value V(MAX) (YES in S112), removing V(MAX) from the frequency distribution; and a step (S116) 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.

公开(公告)号：EP1896816B1

公开(公告)日：2016-04-13

申请号：EP06767568.6

申请日：2006-06-22

申请人： TOYOTA JIDOSHA KABUSHIKI KAISHA ,  DENSO CORPORATION ,  NIPPON SOKEN, INC.

发明人： IWADE, Kiyoshi, c/o NIPPON SOKEN, INC. ,  MURATE, Nobuyuki, c/o NIPPON SOKEN, INC. ,  OE, Shuhei, c/o NIPPON SOKEN, INC. ,  KANEKO, Rihito ,  KASASHIMA, Kenji ,  TAKEMURA, Yuichi

IPC分类号： G01L23/22

CPC分类号： G01L23/225

公开(公告)号：EP1875187A1

公开(公告)日：2008-01-09

申请号：EP06745988.3

申请日：2006-04-25

申请人： TOYOTA JIDOSHA KABUSHIKI KAISHA ,  Denso Corporation ,  NIPPON SOKEN, INC.

发明人： OE, Shuhei ,  IWADE, Kiyoshi ,  OHARA, Kouji ,  KANEKO, Rihito ,  KASASHIMA, Kenji ,  TAKEMURA, Yuichi ,  KAMIO, Shigeru

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 (S108); 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 (YES in S114), determining that knocking has occurred (S116); and when the knock intensity N is not larger than the predetermined reference value (NO in S114), determining that knocking has not occurred (S120).

公开(公告)号：EP1896816B8

公开(公告)日：2016-06-22

申请号：EP06767568.6

申请日：2006-06-22

申请人： TOYOTA JIDOSHA KABUSHIKI KAISHA ,  DENSO CORPORATION ,  NIPPON SOKEN, INC.

发明人： IWADE, Kiyoshi ,  MURATE, Nobuyuki ,  OE, Shuhei ,  KANEKO, Rihito ,  KASASHIMA, Kenji ,  TAKEMURA, Yuichi

IPC分类号： G01L23/22

CPC分类号： G01L23/225

公开(公告)号：EP1875187B1

公开(公告)日：2016-05-11

申请号：EP06745988.3

申请日：2006-04-25

申请人： TOYOTA JIDOSHA KABUSHIKI KAISHA ,  DENSO CORPORATION ,  NIPPON SOKEN, INC.

发明人： OE, Shuhei ,  IWADE, Kiyoshi ,  OHARA, Kouji ,  KANEKO, Rihito ,  KASASHIMA, Kenji ,  TAKEMURA, Yuichi ,  KAMIO, Shigeru

IPC分类号： G01M15/12 ,  G01L23/22

CPC分类号： G01L23/221 ,  G01M15/12

公开(公告)号：EP1896818B1

公开(公告)日：2011-01-12

申请号：EP06767751.8

申请日：2006-06-26

申请人： TOYOTA JIDOSHA KABUSHIKI KAISHA ,  DENSO CORPORATION ,  NIPPON SOKEN, INC.

发明人： YOSHIHARA, Masatomo ,  KASASHIMA, Kenji ,  KANEKO, Rihito ,  ASO, Koji ,  SENDA, Kenji ,  TAKEMURA, Yuichi ,  IWADE, Kiyoshi ,  OE, Shuhei

IPC分类号： G01L23/22

CPC分类号： G01L23/225

摘要： An engine ECU (200) includes a bandpass filter (1) (410) extracting only vibrations at a first frequency band A, a bandpass filter (2) (420) extracting only vibrations at a second frequency band B, a bandpass filter (3) (430) extracting only vibrations at a third frequency band C, and a bandpass filter (4) (440) extracting only vibrations at a fourth frequency band D including the first to third frequency bands A-C. The engine ECU (200) 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.

公开(公告)号：EP1971843A1

公开(公告)日：2008-09-24

申请号：EP06843758.1

申请日：2006-12-27

申请人： Toyota Jidosha Kabushiki Kaisha ,  Denso Corporation ,  NIPPON SOKEN, INC.

发明人： KANEKO, Rihito ,  KASASHIMA, Kenji ,  YOSHIHARA, Masatomo ,  ASO, Koji ,  SENDA, Kenji ,  TAKEMURA, Yuichi ,  OE, Shuhei ,  IWADE, Kiyoshi

IPC分类号： G01L23/22

CPC分类号： G01L23/225

摘要： An engine ECU executes a program including the steps of: calculating (S200) an absolute value ΔS(I) of the deviation of the vibration waveform detected by a knock sensor and a knock waveform model from each other at each crank angle; when ΔS(I) greater than threshold value ΔS(0) is present (YES in S202) and the number of ΔS(I) greater than threshold value ΔS(0) is equal to or smaller than Q(1) (YES in S300), correcting the vibration waveform (S304); calculating (S308) a correlation coefficient K which is a value related to the deviation of the corrected vibration waveform and the knock waveform model from each other; and when the number of ΔS(I) greater than threshold value ΔS(0) is greater than predetermined number Q(1) (NO in S300), calculating the correlation coefficient K without correcting the vibration waveform. Based on the correlation coefficient K, whether knocking is present or absent is determined.

公开(公告)号：EP1963667A1

公开(公告)日：2008-09-03

申请号：EP06834366.4

申请日：2006-12-04

申请人： TOYOTA JIDOSHA KABUSHIKI KAISHA ,  NIPPON SOKEN, INC. ,  Denso Corporation

发明人： YOSHIHARA, Masatomo ,  KASASHIMA, Kenji ,  KANEKO, Rihito ,  ASO, Koji ,  SENDA, Kenji ,  TAKEMURA, Yuichi ,  OE, Shuhei

IPC分类号： F02P5/152

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

摘要： An engine ECU executes a program that includes the steps of: calculating (S204) a median value V(50) and a standard deviation s based on a calculated magnitude value LOG(V); and subtracting (S206) a product of the standard deviation s and a coefficient U(3) from the median value V(50) to calculate BGL. Knocking determination is carried out by comparing a knock magnitude N calculated by dividing the magnitude value LOG(P) by the BGL with a predetermined determination value V(VK). Based on the knocking determination result, ignition timing of the engine is controlled.

公开(公告)号：EP1979606B1

公开(公告)日：2012-10-31

申请号：EP07707758.4

申请日：2007-01-24

申请人： Toyota Jidosha Kabushiki Kaisha ,  NIPPON SOKEN, INC.

发明人： YOSHIHARA, Masatomo ,  KASASHIMA, Kenji ,  KANEKO, Rihito ,  ASO, Koji ,  SENDA, Kenji ,  TAKEMURA, Yuichi ,  OE, Shuhei

IPC分类号： F02P5/152

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

公开(公告)号：EP2032961B1

公开(公告)日：2011-11-16

申请号：EP07768104.7

申请日：2007-06-27

申请人： Toyota Jidosha Kabushiki Kaisha ,  Nippon Soken, INC.

发明人： KANEKO, Rihito ,  KASASHIMA, Kenji ,  YOSHIHARA, Masatomo ,  SENDA, Kenji ,  HANAI, Norihito ,  YAMASAKO, Yasuhiro ,  TAKEMURA, Yuuichi ,  OE, Shuhei

IPC分类号： G01L23/22

CPC分类号： G01L23/225

摘要： An engine ECU executes a program including the step of calculating a correlation coefficient K by dividing the sum SDS(I) of respective absolute values DS(I), which are each a difference between a magnitude in an engine vibration waveform and a magnitude in a knock waveform model for every crank angle, by an area S corresponding to magnitudes equal to or larger than a positive reference value in the knock waveform model (S110), and the step of determining whether or not knocking has occurred based on the correlation coefficient (S116, S120).