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:
Aug. 23, 2011
Filed:
Dec. 04, 2006
Masatomo Yoshihara, Toyota, JP;
Kenji Kasashima, Nishikamo-gun, JP;
Rihito Kaneko, Nishikamo-gun, JP;
Koji Aso, Susono, JP;
Kenji Senda, Okazaki, JP;
Yuichi Takemura, Anjo, JP;
Shuhei Oe, Kariya, JP;
Masatomo Yoshihara, Toyota, JP;
Kenji Kasashima, Nishikamo-gun, JP;
Rihito Kaneko, Nishikamo-gun, JP;
Koji Aso, Susono, JP;
Kenji Senda, Okazaki, JP;
Yuichi Takemura, Anjo, JP;
Shuhei Oe, Kariya, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, JP;
Denso Corporation, Kariya-shi, JP;
Nippon Soken, Inc., Nishio-shi, JP;
Abstract
An engine ECU executes a program that includes: calculating a median value and a standard deviation based on a calculated value based on the detected vibration of the engine; and subtracting a product of the standard deviation and a coefficient from the median value to calculate a magnitude of mechanical vibration specific to the engine. Knocking determination is carried out by comparing a knock magnitude calculated by dividing the magnitude value of the peak magnitude of the detected vibration of the engine by the magnitude of mechanical vibration specific to the engine with a predetermined determination value. Based on the knocking determination result, ignition timing of the engine is controlled.