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:
Nov. 27, 2007
Filed:
Sep. 05, 2006
Hironao Netsu, Kanagawa, JP;
Shin Nomura, Kanagawa, JP;
Hironao Netsu, Kanagawa, JP;
Shin Nomura, Kanagawa, JP;
Nissan Motor Co., Ltd., Yokohama-shi, JP;
Abstract
A cylinder head structure for a multi-cylinder internal combustion engine that is mounted on a vehicle so that a cylinder alignment direction goes along a front-rear direction of the vehicle comprises a cylinder head side wall, an upper deck, and a rib. The cylinder head side wall projects on a periphery of the cylinder head and is provided along the cylinder alignment direction. The upper deck is formed on the cylinder head so as to be positioned between portions of the cylinder head side wall, wherein the upper deck further includes an oil return hole formed near a portion of the cylinder head side wall. The rib extends in a width direction of the cylinder head and is formed on the upper deck in a rear side of the oil return hole.