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:
Mar. 08, 2005
Filed:
May. 03, 2004
Shunji Takahashi, Saitama-ken, JP;
Toshihiko Sato, Saitama-ken, JP;
Shunji Takahashi, Saitama-ken, JP;
Toshihiko Sato, Saitama-ken, JP;
Honda Motor Co., Ltd., Tokyo, JP;
Abstract
A knocking control apparatus for a variable cylinder internal combustion engine avoids erroneous determination of knocking during a fault in a cylinder pausing mechanism to appropriately control knocking associated with the ignition timing, thereby preventing engine stall and reducing a deterioration in a catalyst. The variable cylinder internal combustion engine can be switched between a full cylinder operation mode in which all of a plurality of cylinders are operated, and a partial cylinder operation mode in which part of the plurality of cylinders is paused by a cylinder pausing mechanism. The knocking control apparatus comprises a knocking sensor for detecting knocking of the variable cylinder internal combustion engine, and an ECU for performing a knocking control to correct an ignition timing toward a retarding side when knocking is detected, determining whether or not the cylinder pausing mechanism fails, and suspending the knocking control when the fault determining means determines that the cylinder pausing mechanism is determined to fail.