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:
Sep. 20, 2005
Filed:
Feb. 23, 2004
Yoshiki Nagahashi, Wako, JP;
Hiroshi Nakagome, Wako, JP;
Yoshiki Nagahashi, Wako, JP;
Hiroshi Nakagome, Wako, JP;
Honda Motor Co, Ltd., Tokyo, JP;
Abstract
In a cylinder head of an internal combustion engine, a plug hole for mounting an ignition plug is formed along a cylinder axis and an intake port and an exhaust port are respectively formed at both sides of the plug hole while sandwiching the cylinder axis therebetween. The cylinder head further includes an intake valve which opens or closes the intake port and an exhaust valve which opens or closes the exhaust port. In such a constitution, a cross-sectional shape of a flow passage of an outlet of the exhaust port is an oval shape extending in the horizontal direction and a water drain hole of the plug hole is formed below the exhaust port.