Exhaust gas purifying device for marine engine
AssigneeSanshin Kogyo Kabushiki Kaisha
InventorsMasanori Takahashi, Tatsuki Uchida
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Abstract
A catalytic exhaust system for a marine outboard drive wherein the catalyzer material is supported by a heat conductive bracket and the bracket is cooled by a cooling jacket that is supplied with coolant from the engine cooling jacket. In one embodiment, the water jacket is cooled both internally and externally by delivering water from the cooling jacket into the exhaust system to impinge upon a wall of the cooling jacket.
Claims15
A catalytic exhaust treatment system for a liquid cooled internal combustion engine having a cooling jacket comprising an exhaust passage formed at least in part within the body of said engine for receiving exhaust gases, a catalyzer supported within the portion of said exhaust passage formed in the body of said engine and at a position to be contracted by the exhaust gases in said exhaust passage, said catalyzer being supported by a support member formed from a heat conductive material in direct heat engaging relation with the part of the engine body defining the exhaust passage portion, said cooling jacket being in heat-exchanging relationship with said support member and means for discharging coolant from said cooling jacket directly into said exhaust passage in proximity to said catalyzer for mixing with the exhaust gases in said exhaust passage.
A catalytic exhaust treatment system for a water-cooled internal combustion engine comprising an exhaust passage formed within said engine for receiving exhaust gases, a catalyzer supported within said exhaust passage and in a position to be contacted by the exhaust gases in said exhaust passage, a cooling jacket containing engine coolant and in a heat-exchanging relationship with said catalyzer, and means for delivering engine coolant from said cooling jacket directly into said exhaust passage in proximity with said catalyzer and for mixing with said exhaust gases.
Dependencies are inferred from the claim text.