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:
May. 09, 2006
Filed:
Sep. 26, 2003
Tetsuya Hasebe, Utsunomiya, JP;
Shigetaka Kuroda, Utsunomiya, JP;
Tetsu Sugiyama, Utsunomiya, JP;
Honda Motor Co., Ltd., Tokyo, JP;
Abstract
A cylinder operation control apparatus includes: an internal combustion engine (E) which is adapted to operate in an all-cylinder activation mode and in a cylinder deactivation mode; a lift amount changing device (VT) which is associated with the internal combustion engine (E), and which enables switching between the all-cylinder activation mode and the cylinder deactivation mode by changing the amount of lifts of intake and exhaust valves (IV, EV) associated with the cylinders; a lift operating device () which is associated with the lift amount changing device (VT) to operate the same; a cylinder activation enforcing device (') which is operatively disposed between the lift amount changing device (VT) and the lift operating device () so as to enforce the all-cylinder activation mode as necessary.