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:
Dec. 09, 2014
Filed:
Mar. 17, 2011
Sei Maruyama, Wako, JP;
Tetsushi Kakuda, Wako, JP;
Sei Maruyama, Wako, JP;
Tetsushi Kakuda, Wako, JP;
Honda Motor Co., Ltd., Tokyo, JP;
Abstract
A cooling water passage structure in a cylinder head of an internal combustion engine includes a first exhaust-side cooling water passage and a second exhaust-side cooling water passage arranged to sandwich an exhaust collecting portion and extending in a lengthwise direction of the cylinder head. An exhaust pipe is fastened to a exhaust-side lateral surface of the cylinder head via a fastening member. A shunt passage is formed in at least one of the first exhaust-side cooling water passage and the second exhaust-side cooling water passage to cool the fastening member and is formed along a water flow in the first exhaust-side cooling water passage or the second exhaust-side cooling water passage by partly expanding the first exhaust-side cooling water passage or the second exhaust-side cooling water passage to increase a passage cross-sectional area of the first exhaust-side cooling water passage or the second exhaust-side cooling water passage.