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:
Jun. 27, 2006
Filed:
Feb. 13, 2002
Satoru Goto, Tokyo, JP;
Sadao Nakayama, Tokyo, JP;
Yoshiharu Ono, Kanagawa-ken, JP;
Abstract
In the present invention, there is provided a cylinder head in which seat rings, against which are placed intake valves, are mounted respectively on a plurality of intake ports that communicate with a combustion chamber of an internal combustion engine, and, among the plurality of intake ports, an intake port on which is mounted an eccentric seat ring, with a center of an inner diameter of this eccentric seat ring being eccentric relative to a center of an outer diameter of this eccentric seat ring, is present together with an intake port on which is mounted a standard seat ring, with a center of an inner diameter of this standard seat ring matching a center of an outer diameter of this standard seat ring. As a result, a flow coefficient can be secured using the intake port on which the standard seat ring is mounted, and the swirl flow can be strengthened using the intake port on which the eccentric seat ring is mounted. Consequently, it is possible to obtain the two conflicting elements of a secure flow coefficient and a strengthened swirl flow.