发明授权
- 专利标题: Internal combustion engine knock determination device
- 专利标题(中): 内燃机爆震判定装置
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申请号: US12163342申请日: 2008-06-27
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公开(公告)号: US07874200B2公开(公告)日: 2011-01-25
- 发明人: Shuhei Oe , Kiyoshi Iwade , Nobuyuki Murate , Rihito Kaneko , Yuichi Takemura , Shigeru Kamio
- 申请人: Shuhei Oe , Kiyoshi Iwade , Nobuyuki Murate , Rihito Kaneko , Yuichi Takemura , Shigeru Kamio
- 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: JP2005-130005 20050427
- 主分类号: G01L23/22
- IPC分类号: G01L23/22
摘要:
An engine ECU executes a program including the steps of: detecting a vibration corresponding to a first radial resonance mode by using a band-pass filter, from vibrations sensed by an in-cylinder pressure sensor provided at an upper central portion of the cylinder; calculating knock intensity N based on a result of comparison between the detected waveform and a knock waveform model prepared in advance as a vibration waveform when knocking occurs; determining that knocking occurred when the knock intensity N is larger than a predetermined reference value; and determining that knocking has not occurred when the knock intensity N is not larger than the predetermined reference value.
公开/授权文献
- US20080264150A1 INTERNAL COMBUSTION ENGINE KNOCK DETERMINATION DEVICE 公开/授权日:2008-10-30