Patent ID: 6848398

Claim:
A two-cycle engine for a portable, manually-guided implement and having a cylinder in which is formed a combustion chamber that is delimited by a reciprocating piston that is connected via a connecting rod with a crankshaft mounted in a crankcase, wherein an inlet is provided or a fuel/air mixture and an outlet is provided out of said combustion chamber for exhaust gas, said engine further comprising: four transfer channels which are mirror symmetrical relative to a mirror plane, wherein said transfer channels open into said cylinder via inlet windows and provide fluidic communication between said crankcase and said combustion chamber as a function of the position of said piston, wherein two of said transfer channels are disposed close to said outlet, and two of said transfer channels are disposed remote from said outlet, wherein said transfer channels are provided with a connecting portion to said crankcase, an ascending portion that is substantially parallel to a longitudinal axis of said cylinder, and an opening-out portion into said combustion chamber, wherein said opening-out portion has a side wall that is close to said outlet, a side wall that is remote from said outlet, a top, and a base, wherein a plane defined by that side wall of one of said transfer channels disposed close to said outlet that is remote from said outlet, and a plane defined by that side wall of one of said transfer channels disposed remote from said outlet that is close to said outlet, intersect in a line that extends on a side of said mirror plane that faces said transfer channels, wherein said line has a spacing relative to said mirror plane of 5 to 15% of an inner diameter of said cylinder.