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. 04, 2012
Filed:
Mar. 09, 2009
Hirotaka Komatsu, Wako, JP;
Jiro Takagi, Wako, JP;
Atsushi Kurauchi, Wako, JP;
Masayuki Yoshiiri, Wako, JP;
Kazuhiko Hirota, Wako, JP;
Natsuko Kitamura, Wako, JP;
Yoshiaki Akimoto, Wako, JP;
Hirotaka Komatsu, Wako, JP;
Jiro Takagi, Wako, JP;
Atsushi Kurauchi, Wako, JP;
Masayuki Yoshiiri, Wako, JP;
Kazuhiko Hirota, Wako, JP;
Natsuko Kitamura, Wako, JP;
Yoshiaki Akimoto, Wako, JP;
Honda Motor Co., Ltd., Tokyo, JP;
Abstract
A knocking detecting apparatus for an internal combustion engine, which can more accurately perform the knocking determination based on frequency components of the output signal of the knock sensor, is provided. A frequency spectrum analysis of the knock sensor output signal is performed at predetermined angular intervals of the crankshaft rotation angle. Intensities of a plurality of frequency components obtained by the frequency spectrum analysis are stored as time series data. The time series data of the frequency component intensity are binarized, and it is determined whether or not a knocking has occurred based on the binarized time series data.