Exhaust system for internal combustion engine

Details Exhaust system for internal combustion engine Exhaust system for internal combustion engine

F - Mech Eng,Light,Heat,Weapons

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F02B 19/06 (2006.01) F01N 3/26 (2006.01) F02M 31/087 (2006.01)

Patent

CA 1042295

ABSTRACT OF THE DISCLOSURE A multi-cylinder internal combustion engine of the type having an auxiliary combustion chamber associated with each main combustion chamber, and connected thereto by a torch opening, is provided with an improved mani- fold system and exhaust reaction chamber for maintaining the exhaust gases at a relatively high temperature in order to reduce unwanted emissions discharged into the atmosphere. Thin wall liners having low thermal capacity are pro- vided for adjacent pairs of exhaust ports in the engine, each liner having a single exit opening. Exhaust collection pipes receive exhaust gases from said liners and convey them to an inner exhaust reaction chamber and then in a one- way flow through an outer reaction chamber which surrounds and encloses the inner chamber. An improved heat exchange device employs the heat of gases in the outer chamber to heat a rich air-fuel mixture supplied to the auxiliary combustion chambers and also to heat a lean air-fuel mixture supplied to the main combustion chambers.

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