CRANK-AND-CONNECTING ROD MECHANISM Russian patent published in 2003 - IPC

FIELD: mechanical engineering; internal combustion engines. SUBSTANCE: invention can be used in crank-and-connecting rod mechanisms whose connecting rods are provided with lubricating channels. proposed mechanism contains crankshaft with main journal and crankpins, connecting rod, piston with bosses and outer oil groove made on piston side which is exposed to maximum loads at working stroke. End face planes of connecting rod small end and inner end face planes of piston boss are made inclined, and diameter of main journal is equal to sum of piston stroke and crankpin diameter. Oil passes along channel in connecting rod inner space of pin through hole and gets from inner space of pin into outer groove on piston. EFFECT: reduced wear of friction surfaces, increased service life. 2 dwg