Patent ID: 8671897

Claim:
A two-stroke engine comprising: a cylinder defining a longitudinal axis; a crankcase connected to said cylinder and defining a crankcase interior space; a crankshaft rotatably mounted in said crankcase to rotate about a rotational axis; a piston arranged in said cylinder so as to undergo reciprocating movement along said axis; a connecting rod; a piston pin for connecting said connecting rod to said piston; said piston driving said crankshaft via said connecting rod; an inlet window for supplying combustion air to said crankcase interior space and said inlet window being controlled by said piston during the movement thereof; said piston and said cylinder conjointly defining a combustion chamber and said piston separating said combustion chamber from said crankcase interior space; said piston having a piston base defining an underside facing toward said crankcase; at least one transfer channel via which said combustion air flows from said crankcase interior space into said combustion chamber; and, a flow-guide element arranged adjacent said inlet window in said crankcase interior space for directing combustion air inflowing through said inlet window in a direction toward said underside of said piston base.