Patent ID: 6895910
Filing Date: 2005-05-24
Classification: F02B,F02F

Abstract:
1. A two-cycle engine, comprising: a cylinder in which is formed a combustion chamber that is delimited by a reciprocating piston that, via a connecting rod, drives a crankshaft that is rotatably mounted in a crankcase, wherein said connecting rod is connected to said piston at an eye of said connecting rod, wherein said piston has a piston boss for connecting said piston with said connecting rod, wherein an outlet is provided for discharging exhaust gas from said combustion chamber, wherein an inlet is disposed approximately opposite said outlet for supplying a fuel/air mixture to said crankcase, wherein said at least one transfer channel is provided for a passage of said fuel/air mixture out of said crankcase into said combustion chamber, wherein a first end of said at least one transfer channel opens into said combustion chamber via an inlet window and a second end communicates with said crankcase, wherein at least one air channel is provided that supplies essentially fuel-free gas and that has a window that is disposed in a region of said cylinder that in every position of said piston is separated by said piston from said crankcase and said combustion chamber, wherein a piston window is provided that in a given position of said piston establishes a fluidic connection between said window of said at least one air channel and said inlet window of said at least one transfer channel, and wherein an upper edge of said piston window is spaced, when viewed in the direction of a longitudinal axis of said cylinder, by a distance from an axis of said connecting rod eye that is less than a radius of said piston boss.