The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 25, 2011
Filed:
May. 23, 2007
Rihito Kaneko, Nishikamo-gun, JP;
Kenji Kasashima, Nishikamo-gun, JP;
Masatomo Yoshihara, Toyota, JP;
Kenji Senda, Okazaki, JP;
Yuuichi Takemura, Anjo, JP;
Shuhei Oe, Kariya, JP;
Rihito Kaneko, Nishikamo-gun, JP;
Kenji Kasashima, Nishikamo-gun, JP;
Masatomo Yoshihara, Toyota, JP;
Kenji Senda, Okazaki, JP;
Yuuichi Takemura, Anjo, JP;
Shuhei Oe, Kariya, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, JP;
Denso Corporation, Kariya-shi, JP;
Abstract
A knocking judgement method for an internal combustion engine, in which an engine ECU executes a program judging whether or not such ones of integrated values calculated by integrating the output of a knock sensor at every five degrees of a crank angle are larger than a tentative knock judgement value, in vibrations of a fourth frequency band containing the resonance frequency of the engine, tentatively judging that a knocking has occurred, in case the integrated value larger than the tentative knock judgement value is a predetermined number or more, and judging that no knocking has occurred, in case the integrated value larger than the tentative knock judgement value is not more than the predetermined number.