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:
Dec. 30, 2014
Filed:
Sep. 12, 2012
Toru Tanaka, Chiyoda-ku, JP;
Yuhei Matsushima, Chiyoda-ku, JP;
Keitaro Ezumi, Aki-gun, JP;
Tomokuni Kusunoki, Aki-gun, JP;
Atsushi Inoue, Aki-gun, JP;
Hiroki Morimoto, Aki-gun, JP;
Toru Tanaka, Chiyoda-ku, JP;
Yuhei Matsushima, Chiyoda-ku, JP;
Keitaro Ezumi, Aki-gun, JP;
Tomokuni Kusunoki, Aki-gun, JP;
Atsushi Inoue, Aki-gun, JP;
Hiroki Morimoto, Aki-gun, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Mazda Motor Corporation, Hiroshima, JP;
Abstract
In a knock control device of an internal combustion engine equipped with a control unit which updates a background level based on an output signal from a knock sensor and detects the generation of a knock by comparing a variation of the background level with a knock determination value, a determination as to whether the knock is generated is performed by((variation of first filter value of peak hold value)>((1−filter coefficient)/(1+filter coefficient)×(predetermined value larger than maximum value of variation of peak hold value in case where knock is not generated))).