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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.:

US 10514085 B1

PDFFull Text
Date of Patent:
Dec. 24, 2019

Filed:

Mar. 07, 2018

Internal combustion engine of saddle riding vehicle

Applicant:

Honda Motor Co., Ltd., Tokyo, JP;

Inventors:

Nozomi Okada, Wako, JP;

Yosuke Hoi, Wako, JP;

Isao Azumagakito, Wako, JP;

Shigeru Awazu, Wako, JP;

Assignee:

HONDA MOTOR CO., LTD., Tokyo, JP;

Attorney:

Birch, Stewart, Kolasch & Birch, LLP

Primary Examiner:

Ching Chang

Int. Cl.
CPC ...
F01L 1/02 (2006.01); F16H 7/08 (2006.01); F01L 1/053 (2006.01); F01M 1/02 (2006.01); F02B 61/02 (2006.01); F01B 1/01 (2006.01); F01L 13/08 (2006.01); F01M 1/06 (2006.01); F01M 11/03 (2006.01); F01L 1/18 (2006.01); F01L 1/047 (2006.01);
U.S. Cl.
CPC ...
F16H 7/08 (2013.01); F01B 1/01 (2013.01); F01L 1/022 (2013.01); F01L 1/053 (2013.01); F01L 13/085 (2013.01); F01M 1/02 (2013.01); F01M 1/06 (2013.01); F02B 61/02 (2013.01); F01L 1/185 (2013.01); F01L 2001/0475 (2013.01); F01L 2001/0476 (2013.01); F01L 2001/0537 (2013.01); F01L 2810/02 (2013.01); F01M 11/03 (2013.01); F01M 2001/064 (2013.01); F16H 2007/0812 (2013.01); F16H 2007/0842 (2013.01); F16H 2007/0872 (2013.01); F16H 2007/0893 (2013.01); F16H 2007/0897 (2013.01);
Abstract

A cam chain tensioner device of an internal combustion engine includes a cam chain tensioner, and a tensioner lifter pressing the cam chain tensioner to a cam chain. The tensioner lifter is mounted on an inclined upper surface of the cylinder head. The cylinder head has therein a valve train oil supply passage supplying oil from an oil pump to the valve train camshafts, and a tensioner lifter oil supply passage supplying oil to the tensioner lifter. The valve gear oil supply passage has a branching portion where the tensioner lifter oil supply passage branches. The branching portion is at a position higher than the tensioner lifter, and communicates with the tensioner lifter disposed at a position lower than the branching portion. It is thus possible to prevent fluttering of the cam chain and to reduce noise generated by the cam chain at the time of restart of the engine after it is stopped.

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