| 摘要 |
A two-stroke internal combustion engine with crankcase scavenging includes an exhaust passage controlled by the piston and at least two first transfer passages and at least one second transfer passage, each with a corresponding transfer window into the cylinder chamber and a window on the crankcase side for communication between the cylinder chamber and the crankcase, the transfer windows of the first transfer passages being controlled by the upper edge of the piston, and the crankcase-side window of the second transfer passage being disposed in a region of the cylinder wall that is swept by the piston skirt of the piston. The cylinder wall includes at least one recess which is arranged in close vicinity to the transfer window of the second transfer passage and which is in flow communication with the second transfer passage, wherein a narrow passage is arranged between the recess and the second transfer passage.
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