초록 ▼

A water jacketed exhaust pipe comprising an inner liner, an outer shell, and a spray ring. The inner liner includes an internally tapered section which clips the turbulence that occurs along the inner walls of the liner. As a result, fluid expelled from the spray ring will not migrate into the inner

A water jacketed exhaust pipe comprising an inner liner, an outer shell, and a spray ring. The inner liner includes an internally tapered section which clips the turbulence that occurs along the inner walls of the liner. As a result, fluid expelled from the spray ring will not migrate into the inner liner where it can cause severe corrosion. The outer liner includes an internally tapered section which scatters the stream of water expelled from the spray ring and further redirects water onto the inner liner and into the center of the exhaust path. The redirected water particles are easily vaporized and in the process, extract a significant amount of heat from the exhaust system.

대표청구항 ▼

[ What is claimed is:] [1.] A water jacketed exhaust pipe for marine engines comprising:an elongated inner liner, said liner having a tail end, said tail end defining a first inwardly tapered section;an elongated outer shell, said shell surrounding said liner about an elongated axis of said pipe, sa

[ What is claimed is:] [1.] A water jacketed exhaust pipe for marine engines comprising:an elongated inner liner, said liner having a tail end, said tail end defining a first inwardly tapered section;an elongated outer shell, said shell surrounding said liner about an elongated axis of said pipe, said shell further having a tail end, said shell tail end defining a second inwardly tapered section;a spacer having a top, wherein said spacer is disposed between said outer shell and said inner liner that separates said shell from said liner and defines an inner volume therebetween, said spacer further defining at least one passageway therethrough communicating said volume with an outer volume outside said exhaust pipe, and wherein said passageway is narrow enough to create a back pressure in said inner volume that thereby forcefully elects water through said passageway. [14.] A water jacketed exhaust pipe for marine engines comprising:an elongated inner liner, said liner having a tail end, said tail end defining an inwardly tapered section;an elongated outer shell, said outer shell having a tail end, said shell surrounding said liner about an elongate axis of said pipe;a spacer angularly disposed between said outer shell and said inner liner and separating said shell from said liner and defining an inner volume therebetween, said spacer further defining at least one passageway thereby fluidly communicating said inner volume with an outer volume outside said exhaust pipe; and,wherein said passageway is narrow enough to create a back pressure in said inner volume that thereby forcefully elects water through said passageway, andwherein fluid from said inner volume is directed toward said outer shell by said at least one passageway. The water jacketed exhaust pipe for marine engines as in claim 14, wherein said spacer is a ring. The water jacketed exhaust pipe as set forth in claim 14, wherein said inner liner, said outer shell, and said ring are constructed from a corrosion resistant material. The water jacketed exhaust pipe as set forth in claim 14, wherein said first and second inwardly tapered sections are curved. The water jacketed exhaust pipe as set forth in claim 14, wherein said first and second inwardly tapered sections are cone shaped. The water jacketed exhaust pipe as set forth in claim 14, wherein at least one of said first and second inwardly tapered sections is curved.