发明名称 |
INTERNAL COMBUSTION ENGINE KNOCK DETERMINATION DEVICE |
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.
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申请公布号 |
US2008264150(A1) |
申请公布日期 |
2008.10.30 |
申请号 |
US20080163342 |
申请日期 |
2008.06.27 |
申请人 |
TOYOTA JIDOSHA KABUSHIKI KAISHA;DENSO CORPORATION;NIPPON SOKEN, INC. |
发明人 |
OE SHUHEI;IWADE KIYOSHI;MURATE NOBUYUKI;KANEKO RIHITO;TAKEMURA YUICHI;KAMIO SHIGERU |
分类号 |
G01L23/22 |
主分类号 |
G01L23/22 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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