US 7,581,620 B2 · Marine muffler with angularly disposed internal baffle

Abstract

A marine muffler comprises an elongate cylindrical housing having an inlet and an outlet and defining an internal volume partitioned, by an angularly disposed internal baffle, into a lower chamber in communication with the inlet and an upper chamber in communication with the outlet. A vertically disposed duct is insertably secured to the baffle to allow exhaust gas and exhaust cooling water to flow from the lower inlet chamber to upper outlet chamber. The exhaust duct may preferably be further adapted with internal structure forming a plurality of individual flow conduits or passages. The duct is preferably positioned such that a plurality of flow passage inlets are positioned in proximity to the lower cylindrical housing wall, with flow passage outlets positioned in proximity to the upper housing wall. The lower duct wall may further be adapted with sidewall apertures for improving exhaust flow dynamics therethrough.

Claims14

Dependent claims

A muffler for a marine engine, said muffler comprising:

an elongate generally hollow cylindrical housing having first end forming an inlet and a second end forming an outlet;
an angularly inclined baffle contained within said housing and disposed between said housing inlet and outlet, said angularly inclined baffle dividing said housing into an inlet chamber disposed below said baffle, and an outlet chamber disposed above said baffle;
a non-circular duct projecting through said baffle and generally vertically disposed relative thereto, said duct having at least one lower inlet in communication with said inlet chamber and at least one upper outlet in communication with said outlet chamber.

Dependencies are inferred from the claim text.

Marine muffler with angularly disposed internal baffle

Life of this patent

Marine muffler with angularly disposed internal baffle

Life of this patent

Abstract

Claims14