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. 25, 2011
Filed:
Aug. 15, 2008
Mahito Shikama, Wako, JP;
Toshinori Tsukamoto, Wako, JP;
Hiroyuki Ando, Wako, JP;
Hideharu Takamiya, Wako, JP;
Toshifumi Hiraboshi, Wako, JP;
Mahito Shikama, Wako, JP;
Toshinori Tsukamoto, Wako, JP;
Hiroyuki Ando, Wako, JP;
Hideharu Takamiya, Wako, JP;
Toshifumi Hiraboshi, Wako, JP;
Honda Motor Co., Ltd., Minato-Ku, Tokyo, JP;
Abstract
A rotational speed parameter is detected in accordance with a rotational speed of the engine. A reference value of the rotational speed parameter is calculated. For each cylinder, an error between the reference value and the rotational speed parameter detected every predetermined crank angle is calculated as a relative speed parameter. For each cylinder, an integrated value is calculated by integrating the relative speed parameters over a predetermined period. For each cylinder, an average value per cylinder of the sum of the integrated values of all the cylinders is calculated. For each cylinder, an error between the integrated value of the cylinder and the average value is calculated. For each cylinder, the output of the engine is controlled in accordance with the error calculated for the cylinder such that variations in the output between the cylinders are suppressed.