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:
Aug. 29, 2017

Filed:

Mar. 01, 2016
Applicant:

Yamaha Hatsudoki Kabushiki Kaisha, Iwata-shi, Shizuoka, JP;

Inventors:

Koichi Nakayama, Shizuoka, JP;

Yukinori Nose, Shizuoka, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B63H 20/24 (2006.01); B63H 20/28 (2006.01); F02B 75/22 (2006.01); F02B 61/04 (2006.01);
U.S. Cl.
CPC ...
B63H 20/24 (2013.01); B63H 20/28 (2013.01); F02B 61/045 (2013.01); F02B 75/22 (2013.01);
Abstract

An outboard motor includes an exhaust passage that discharges exhaust gases generated in a V-type engine into water from an exhaust opening. The exhaust passage includes first and second branch passages connected to cylinders and disposed inside a V-shaped line, a first upstream collecting passage connected to each of the first branch passages, a second upstream collecting passage connected to each of the second branch passages, and a downstream collecting passage connected to the first and second upstream collecting passages. A portion from an upstream end of the downstream collecting passage to a downstream end of the downstream collecting passage is disposed outside cylinder heads of the V-type engine.


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