TWO-STROKE INTERNAL COMBUSTION ENGINE

Abstract

A two-stroke internal combustion engine comprising a crankcase (2) which has a combustion chamber (3) having one or more intake ports (4) for a mixture of fuel and oxidizer and one or more exhaust ports (5) for the burnt products; an exhaust system (6) for the burnt products, in fluid communication with the exhaust port (5) of the combustion chamber (3), comprising at least one catalyst (7); the exhaust system (6) comprising a first conduit (8), along which the catalyst (7) is disposed, and a second conduit (9) having respectively an inlet (8a; 9a) and an outlet (8b; 9b), without a catalyst (7); the second conduit (9) opens into the first conduit (8) at least upstream of the catalyst (7) which is located therein;an interceptor device (10) for the burnt products exiting the exhaust port (5) of the combustion chamber (3) is configured to convey the burnt products into the first conduit (8) or into the second conduit (9). [FIG. 1];

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