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:
Oct. 04, 2005
Filed:
Nov. 06, 2003
Shuuji Nakano, Nagoya, JP;
Hiroyuki Kawase, Okazaki, JP;
Shuuji Nakano, Nagoya, JP;
Hiroyuki Kawase, Okazaki, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Abstract
A variable valve mechanism of an internal combustion engine capable of changing at least one of two valve physical quantities, i.e., valve operation angle and valve lift, has a valve lift adjustment mechanism that adjusts the at least one valve physical quantity with a higher precision in a region where the at least one valve physical quantity is relatively small than in a region where the at least one valve physical quantity is relatively large. Therefore, a size increase of the variable valve mechanism can be avoided, and the mechanism can easily be incorporated into the engine.