INTERNAL COMBUSTION ENGINE CRANK GEAR LUBRICATION AND COOLING SYSTEM Russian patent published in 1998 - IPC

FIELD: mechanical engineering; internal combustion engines. SUBSTANCE: through channels are made on beads centering the connecting rod on crankpin of crankshaft. Through channels do not open on working surface of crankpin bearing and connect oil spaces of bearings with engine crankcase. Through channels are arranged at side of small head of connecting rod in sector limited by angle of rocking of connecting rod. Summary area of through section of channels exceeds area of through section of axial clearance between connecting rod and crankshaft webs. EFFECT: improved reliability of crankpin bearing unit by preventing take off of oil from its loaded zone. 2 dwg