Patent ID: 9702318
Date: 2017-07-11
CPC Classifications: F02B,F02F

Claim:
1. A two-stroke engine comprising: a cylinder defining a cylinder longitudinal axis and having a combustion chamber formed therein; a piston mounted in a reciprocating manner; said combustion chamber having an outlet and being delimited by said piston; a crankcase defining a crankcase interior space; a crankshaft rotatably mounted about a rotational axis in said crankcase; said piston being configured to drive said crankshaft; said cylinder having a cylinder base whereat said cylinder base and said crankcase conjointly define a partition plane separating said cylinder from said crankcase; the two-stroke engine defining an imaginary central plane which contains said rotational axis and intersects said outlet; at least one transfer channel having at least one side wall; said combustion chamber being fluidly connected to said crankcase interior space via said at least one transfer channel in at least one position of said piston; said at least one transfer channel passing from said cylinder to said crankcase via at least one transfer opening; said at least one side wall having a first region in said cylinder; said at least one side wall in said first region in a viewing direction perpendicular to said imaginary plane encloses an angle α of 90° with said cylinder longitudinal axis; said first region of said side wall having a first distance (a, d) to said partition plane measured parallel to said cylinder longitudinal axis; said at least one side wall having a second region running in a cylinder circumferential direction between said first region and said transfer opening; said second region being at a second distance (b, e) to said partition plane measured parallel to said cylinder longitudinal axis; and, said second distance (b, e) being greater than said first distance (a, d).