CYLINDER BLOCK OF LIQUID-COOLED INTERNAL COMBUSTION ENGINE Russian patent published in 2005 - IPC

FIELD: mechanical engineering; internal combustion engines.

SUBSTANCE: proposed cylinder block of liquid-cooled internal combustion engine contains walls forming cylinder spaces made in form of plate members united in upper part by ring projections with support and centering surfaces for mounting cylinder liners. Compensating cavities of depth equal to 1.0-1.5 mm and width equal to width of support surface are made in ring projections from side of support surfaces. Orientation and extension of compensating cavities in cylinder block are determined by chord 1 of arc of circumference with radius R equal to radius of centering surface of ring projection, and central angle α equal to 35°-45° related by l=2R sin α/2, chord being parallel to axis of crankshaft.

EFFECT: increased wear resistance of parts of cylinder-piston group of engines, reduced specific fuel consumption and oil burning loss.

17 cl