FIELD: machine engineering.
SUBSTANCE: when the compression ratio of the internal combustion engine (10) with variable compression ratio is set at a low compression ratio, lubricating oil, released from the oil channel (25) of lower level reflects the top link (11) top dead center of the piston and moves to the inner surface of the cylinder walls on the side on which the controlling unit (15), which can be seen in the axial direction of the crankshaft is located. When the compression ratio of the internal combustion engine (10) with variable compression ratio is set at a high compression rate, lubricating oil, released from the oil channel (25) lower level reflects the top link (11) in the upper dead point of the piston and served to the rear of the piston crown.
EFFECT: reduction of wear due to lubrication of the inner wall of the cylinder.
6 cl, 4 dwg
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