Method for operating a two-stroke engine having mixture induction

摘要

The invention relates to a method for operating a two-stroke engine having scavenging-advance storage. The combustion chamber ( 3 ) which in configured in the cylinder ( 2 ) is supplied with an air/fuel mixture via a transfer channel ( 12, 15 ). This air/fuel mixture is drawn by induction through an inlet into the crankcase ( 4 ) during the intake phase. During the intake phase, a fuel-free fluid such as pure air is inducted via a fluid channel ( 17 ) and stored in the transfer channel. To obtain good exhaust-gas values while also having reduced fuel consumption and reliable lubrication, lambda (lambda) of the air/fuel mixture, which is stored in the crankcase ( 4 ), is adjusted in a range of approximately 0.2 to 0.6 in the part-load and full-load ranges of the two-stroke engine ( 1 ).