FIELD: engines and pumps.
SUBSTANCE: invention relates to two-stroke engines. This invention consists in that two-stroke engine cylinder is provided with fixed separation web to divide it into top and bottom sections. Piston displaces between separation web and cylinder head. Circular skirt extending from separation plate makes a part of circular cavity between said skirt and cylinder inner surface. Said cavity is compacted at bottom to make cylinder isolated from the engine crankcase. System of gas transfer channels includes at least one long channel to connect circular cavity lower section with discharge hole of gas transfer channel in cylinder wall. Besides it has short channel connecting inlet nearby separation plate top surface and discharge holes. Note here that said discharge hole is shared by both long and short channels.
EFFECT: higher efficiency of engine operation.
20 cl, 3 dwg
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