Patents Represented by Attorney Oblon, Spivak, McClelland, Maier & Neustady, L.L.P.

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  • Device and method for determining knocking of internal combustion engine
    Patent number: 8020429
    Abstract: An engine ECU executes a program including calculating a correlation coefficient by dividing the sum of respective absolute values, which are each a difference between a magnitude in an engine vibration waveform and a magnitude in a knock waveform model for every crank angle, by an area corresponding to magnitudes equal to or larger than a positive reference value in the knock waveform model, and determining whether or not knocking has occurred based on the correlation coefficient.
    Type: Grant
    Filed: June 27, 2007
    Date of Patent: September 20, 2011
    Assignees: Toyota Jidosha Kabushiki Kaisha, Denso Corporation, Nippon Soken, Inc.
    Inventors: Rihito Kaneko, Kenji Kasashima, Masatomo Yoshihara, Kenji Senda, Norihito Hanai, Yasuhiro Yamasako, Yuuichi Takemura, Shuhei Oe