Internal combustion engine knock determination device

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; calculating knock intensity N based on the result of comparison between a detected waveform and the set knock waveform model; when the knock intens...

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Bibliographic Details
Main Authors Oe, Shuhei, Iwade, Kiyoshi, Ohara, Kouji, Kaneko, Rihito, Kasashima, Kenji, Takemura, Yuichi, Kamio, Shigeru
Format Patent
LanguageEnglish
Published 16.03.2010
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Summary: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; 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, determining that knocking has occurred; and when the knock intensity N is not larger than the predetermined reference value, determining that knocking has not occurred.