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.

Date of Patent:
Dec. 09, 2014

Filed:

Sep. 12, 2012
Applicants:

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;

Inventors:

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;

Assignees:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02D 45/00 (2006.01); F02D 35/02 (2006.01); F02D 41/24 (2006.01); G01L 23/22 (2006.01); F02P 5/152 (2006.01); F02D 41/28 (2006.01);
U.S. Cl.
CPC ...
F02D 45/00 (2013.01); F02D 35/027 (2013.01); G01L 23/221 (2013.01); F02D 41/2416 (2013.01); F02D 2041/286 (2013.01);
Abstract

A knock control apparatus for an internal combustion engine includes a knock signal normalization portion that normalizes a knock signal using base statistics calculated on the basis of the knock signal. The knock signal normalization portion calculates base statistics on the basis of a last value and a current value of the knock signal and normalizes the knock signal using a base statistic interpolated according to an operating state.


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