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:
Oct. 18, 2016
Filed:
Oct. 23, 2014
Brunswick Corporation, Lake Forest, IL (US);
Gregg D. Langenfeld, Fond du Lac, WI (US);
Ryan E. Mueller, Ripon, WI (US);
Brunswick Corporation, Lake Forest, IL (US);
Abstract
An internal combustion engine and a method of forming an internal combustion engine are for a marine propulsion device. A first engine casting defines a first flow passage configured to receive the exhaust gases from a piston-cylinder. A die cast second engine casting defines a second flow passage that is configured to receive the exhaust gases from the first flow passage and convey the exhaust gases to a catalyst. The second flow passage has an upstream first leg that is parallel to the first flow passage and a downstream second leg that is transversely oriented to the first leg. An inside corner is between the first and second legs. The second flow passage has an inlet end that is configured to receive exhaust gases from the first flow passage. The first flow passage has an outlet end that is configured to convey exhaust gases to the inlet end of the second flow passage. The outlet end of the first flow passage is sized smaller than the inlet end of the second flow passage so that exhaust gases are directed away from the inside corner as the exhaust gases travel from the outlet end of the first flow passage to the inlet end of the second flow passage.