发明名称 |
KNOCK DETERMINATION DEVICE AND METHOD FOR INTERNAL COMBUSTION ENGINE |
摘要 |
An engine ECU executes a program including the steps of: calculating a coefficient of correlation K in accordance with a result of comparing a waveform of a vibration of a frequency band including a resonance frequency of an engine with a knock waveform model previously created as a waveform of a vibration caused when the engine knocks (S112); calculating a knock intensity N from an intensity of a vibration of a frequency band excluding the resonance frequency of the engine (S114); if knock intensity N is larger than a reference value and coefficient of correlation K is larger than a threshold value (YES at S116), determining that the engine knocks (S118); and if knock intensity N is smaller than the reference value and/or coefficient of correlation K is smaller than the threshold value, determining that the engine does not knock (S122).
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申请公布号 |
US2009150058(A1) |
申请公布日期 |
2009.06.11 |
申请号 |
US20070303123 |
申请日期 |
2007.06.05 |
申请人 |
TOYOTA JIDOSHA KABUSHIKI KAISHA |
发明人 |
KANEKO RIHITO;KASASHIMA KENJI;YOSHIHARA MASATOMO;SENDA KENJI;HANAI NORIHITO;TAKEMURA YUUICHI;OE SHUHEI |
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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