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AssigneeOutboard Marine Corporation
InventorsTheodore J. Holtermann, George G. Lassanske, Lee A. Woodward
Estimating the term…
An internal combustion engine assembly comprising an internal combustion engine including an exhaust port, an exhaust conduit communicating with the exhaust port and having an inner surface, the conduit including first and second conduit portions having respective ends, the first and second conduit portions being connected end-to-end, a catalyst which is located within the conduit and which includes catalytic material and a sleeve surrounding the catalytic material, the sleeve having a length and an outer surface spaced from the inner surface of the conduit along substantially the entire length of the sleeve, the sleeve having thereon a rigid, radially outwardly extending flange captured between the ends of the conduit portions, and a flexible gasket between the flange and the end of one of the conduit portions.
A marine propulsion device comprising a propulsion unit adapted to be mounted on a boat, said propulsion unit including a propeller shaft adapted to support a propeller, an internal combustion engine which is drivingly connected to said propeller shaft and which includes an exhaust port, an exhaust conduit communicating with said exhaust port and having an inner surface, a catalyst which is located within said conduit and which includes catalytic material, and a sleeve surrounding said catalytic material, said sleeve having a length and an outer surface spaced from said inner surface of said conduit along substantially the entire length of said sleeve, first means for substantially rigidly connecting said sleeve to said conduit at only one point along the length of said sleeve, and second means for flexibly connecting said sleeve to said conduit at a second point along the length of said sleeve.
An internal combustion engine assembly comprising an internal combustion engine including an exhaust port, an exhaust conduit communicating with said exhaust port and having an inner surface, said inner surface of said conduit having therein a annular groove, a catalyst which is located within said conduit and which includes catalytic material, and a sleeve surrounding said catalytic material, said sleeve having a length and an outer surface spaced from said inner surface of said conduit along substantially the entire length of said sleeve, said sleeve having thereon a rigid, radially outwardly extending flange received in said groove, and flexible material located between said inner surface of said conduit and said outer surface of said sleeve.
An internal combustion engine assembly comprising an internal combustion engine including an exhaust port, an exhaust conduit communicating with said exhaust port and having an inner surface, said conduit including first and second conduit portions which have respective ends and which are connected end-to-end, catalyst which is located within said conduit and which includes catalytic material, and a sleeve surrounding said catalytic material, said sleeve having a length and an outer surface spaced from said inner surface of said conduit along substantially the entire length of said sleeve, said sleeve having thereon a rigid, radially outwardly extending flange captured between said ends of said conduit portions, and a flexible gasket between said flange and said end of one of said conduit portions.
An internal combustion engine assembly comprising an internal combustion engine including an exhaust port, an exhaust conduit communicating with said exhaust port and having an inner surface, a catalyst which is located within said conduit and which includes catalytic material, and a sleeve surrounding said catalytic material, said sleeve having a length and an outer surface spaced from said inner surface of said conduit along substantially the entire length of said sleeve, first means for substantially rigidly connecting said sleeve to said conduit at only one point along the length of said sleeve, and second means for flexibly connecting said sleeve to said conduit at a second point along the length of said sleeve.
A segmented exhaust pipe including an exhaust gas manifold including a mounting surface, an exhaust gas conduit opening into said mounting surface, wall means defining an interior exhaust gas manifold coolant jacket, and a passage extending between said mounting surface and said exhaust gas manifold coolant jacket, an inlet segment including an inlet mounting surface adjacent said mounting surface of said exhaust gas manifold, an outlet mounting surface, an interior exhaust gas conduit opening into said inlet and outlet mounting surfaces and communicating with said exhaust gas conduit of said exhaust gas manifold, wall means defining an interior inlet segment coolant jacket, and passages extending respectively between said inlet segment mounting surfaces and said inlet segment coolant jacket, a central segment including an inlet mounting surface adjacent said outlet mounting surface of said inlet segment, an outlet mounting surface, an interior exhaust gas conduit opening into said central segment inlet and outlet surfaces and communicating with said exhaust gas conduit of said inlet segment, wall means defining an interior central segment coolant jacket, and passages respectively extending between said central segment mounting surfaces and said central segment coolant jacket, a discharge segment including an inlet mounting surface adjacent said outlet mounting surface of said central segment, an interior exhaust gas conduit opening into said discharge segment inlet mounting surface and communicating with said exhaust gas conduit in said central segment, wall means defining an interior discharge segment cooling jacket, and a passage extending between said discharge segment inlet mounting surface and said discharge segment coolant jacket, tubular members respectively extending between said inlet segment and each of said exhaust gas manifold and said central segment and between said central segment and said discharge segment and in said passages, sealing means extending between said tubular members and said exhaust gas manifold and said inlet, central, and discharge segments for preventing leakage, a catalytic element located in said central segment and including a flange captured between said outlet mounting surface of said inlet segment and said inlet mounting surface of said central segment, a discharge end having a cross sectional flow area, and a conical passage piece located adjacent said discharge end of said catalytic element and including an inlet flow area corresponding in size to said discharge flow area, and an outlet flow area having a size less than the cross sectional flow area of said discharge end of said catalytic element, means for releasably fastening said inlet segment to said exhaust gas manifold without communicating with said cooling jackets of said exhaust gas manifold and said inlet segment, and means for releasably fastening together in series said inlet segment, said central segment, and said discharge segment without communicating with said coolant jackets in said inlet segment, said central segment, and said discharge segments.
Dependencies are inferred from the claim text.