FIELD: engine engineering. SUBSTANCE: engine has crankshaft 1 received in the crankcase. The crankcase is provided with at least one ring groove 8 connected to a source of compressed fluid through pipe line 12. Receiver 13 or exhaust manifold of the engine can be used as the source. The manifold is provided with a system for ejecting ventilation of the crankcase. Groove 8 is connected to the space of the crankcase through slot 20 and with the atmosphere through slot 21. EFFECT: excluded oil leakages. 2 dwg
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