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.

Date of Patent:
Jul. 03, 2007

Filed:

Dec. 23, 2005
Applicants:

Yuichi Tawarada, Saitama, JP;

Isamu Takahashi, Saitama, JP;

Inventors:

Yuichi Tawarada, Saitama, JP;

Isamu Takahashi, Saitama, JP;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F01P 1/04 (2006.01);
U.S. Cl.
CPC ...
Abstract

A cooling structure is a separate member from a structural portion of an engine. An oil injection pipe includes cooling oil injection holes for injecting cooling oil into cylinder bores and is mounted across an engine at a somewhat upper position with respect to a crank shaft and in parallel with the crank shaft. Both ends of the oil injection pipe are fixed through mounting members to right and left side walls of the engine, whereby the pipe is mounted. Two left and right pipe portions are joined together at a central position between the two to constitute the oil injection pipe as a single pipe. At the connection in the central position, the oil injection pipe is connected to an oil supply path. Oil supplied through the oil supply path flows into the left and right pipe portions and is injected from the injection holes into the cylinder bores.


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