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:
Mar. 27, 2012
Filed:
Mar. 02, 2009
Satoshi Watanabe, Okazaki, JP;
Hiroto Tanaka, Toyota, JP;
Rihito Kaneko, Nishikamo-gun, JP;
Norihito Hanai, Toyota, JP;
Kenji Senda, Okazaki, JP;
Satoshi Masuda, Kariya, JP;
Satoshi Watanabe, Okazaki, JP;
Hiroto Tanaka, Toyota, JP;
Rihito Kaneko, Nishikamo-gun, JP;
Norihito Hanai, Toyota, JP;
Kenji Senda, Okazaki, JP;
Satoshi Masuda, Kariya, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota-Shi, JP;
Abstract
An engine ECU executes a program including the steps of: calculating a knock magnitude N by dividing an integrated value lpkknk obtained by integrating the magnitude of vibration in the knock detection gate by BGL; controlling ignition timing according to a result of comparison between knock magnitude N and a determination value VJ; stopping updating of a standard deviation σ when it is determined that determination value VJ to be compared with knock magnitude N is to be changed; updating a median value VM by increasing an update amount of median value VM; and updating BGL according to median value VM and standard deviation σ.