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. 13, 2015
Filed:
May. 09, 2011
Kazuhiko Imamura, Wako, JP;
Masaaki Nagashima, Wako, JP;
Hiroshi Yatani, Wako, JP;
Tomoharu Hozumi, Wako, JP;
Nobuaki Ito, Wako, JP;
Chiharu Shimizu, Wako, JP;
Kazuhiko Imamura, Wako, JP;
Masaaki Nagashima, Wako, JP;
Hiroshi Yatani, Wako, JP;
Tomoharu Hozumi, Wako, JP;
Nobuaki Ito, Wako, JP;
Chiharu Shimizu, Wako, JP;
Honda Motor Co., Ltd., Tokyo, JP;
Abstract
An apparatus to control an internal combustion engine includes a cylinder operation controller configured to switch a cylinder operation between an all-cylinder operation and a cylinder deactivation operation. A deactivation time parameter integrating device is configured to integrate a deactivation time parameter indicating a deactivation time of the part of the plurality of cylinders to calculate an integrated deactivation time parameter. An inhibiting device is configured to inhibit the cylinder deactivation operation if the integrated deactivation time parameter calculated by the deactivation time parameter integrating device is larger than or equal to a reference value. The deactivation time parameter integrating device holds the integrated deactivation time parameter as an initial value after an operation of the internal combustion engine is stopped. The deactivation time parameter integrating device resumes integrating the deactivation time parameter using the initial value when the internal combustion engine restarts.