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:
Jan. 12, 2010
Filed:
Sep. 28, 2005
Koichiro Shinozaki, Saitama, JP;
Katsura Okubo, Saitama, JP;
Yuji Yasui, Saitama, JP;
Masahiro Sato, Saitama, JP;
Koichi Ikoma, Saitama, JP;
Koichiro Shinozaki, Saitama, JP;
Katsura Okubo, Saitama, JP;
Yuji Yasui, Saitama, JP;
Masahiro Sato, Saitama, JP;
Koichi Ikoma, Saitama, JP;
Honda Motor Co., Ltd., Tokyo, JP;
Abstract
A device and method for calculating the work load of an engine more efficiently and accurately. The device for calculating the work load of an engine comprises a means for determining a desired frequency component to calculate the work load of the engine obtained through frequency decomposition of the volume variation rate of the engine. The device further comprises a first calculating means for calculating a first correlation coefficient between the volume variation rate and a reference signal composed of a frequency corresponding to the determined component, and a second calculating means for calculating a second correlation coefficient between the cylinder inner pressure of the engine and a reference signal composed of a frequency corresponding to the determined component. The work load of the engine is calculated using the first and second correlation coefficients.