发明授权
- 专利标题: Internal combustion engine knocking judging device and knocking judging method
- 专利标题(中): 内燃机爆震判定装置及爆震判定方法
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申请号: US12092163申请日: 2007-10-01
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公开(公告)号: US07673615B2公开(公告)日: 2010-03-09
- 发明人: Shuhei Oe , Kouzi Ohara , Satoshi Masuda , Yuuichi Takemura , Rihito Kaneko , Kenji Kasashima , Masatomo Yoshihara , Kenji Senda , Norihito Hanai , Yasuhiro Yamasako
- 申请人: Shuhei Oe , Kouzi Ohara , Satoshi Masuda , Yuuichi Takemura , Rihito Kaneko , Kenji Kasashima , Masatomo Yoshihara , Kenji Senda , Norihito Hanai , Yasuhiro Yamasako
- 申请人地址: JP Toyota-shi JP Kariya-shi JP Nishio-shi
- 专利权人: Toyota Jidosha Kabushiki Kaisha,Denso Corporation,Nippon Soken, Inc.
- 当前专利权人: Toyota Jidosha Kabushiki Kaisha,Denso Corporation,Nippon Soken, Inc.
- 当前专利权人地址: JP Toyota-shi JP Kariya-shi JP Nishio-shi
- 代理机构: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- 优先权: JP2006-274948 20061006; JP2007-125892 20070510
- 国际申请: PCT/JP2007/069541 WO 20071001
- 国际公布: WO2008/044623 WO 20080417
- 主分类号: F02P5/00
- IPC分类号: F02P5/00 ; G01L23/22
摘要:
An engine ECU executes: calculating 15-degrees integrated value integrating vibration intensity for each of six crank angle ranges; detecting an amount of change in the 15-degrees integrated value between ignition cycles; specifying two ranges having larger amounts of change; specifying a crank angle having intensity larger than that of a neighboring crank angle in a search range determined to be the same as the specified ranges; calculating a coefficient of correlation K corresponding to a difference between a vibration waveform and a knock waveform model while the specified crank angle is matched with a timing at which intensity peaks in the knock waveform model; and, if the coefficient of correlation K is larger than a threshold value K(0), determining that knock has occurred.