CRANK MECHANISM WITH PISTON AND TWO RODS FOR INTERNAL COMBUSTION ENGINE Russian patent published in 2017 - IPC F01M1/06 F01M1/08 F02B75/04 F02B75/32 F16C3/14 

FIELD: machine engineering.

SUBSTANCE: hole (35a) on the one end side of the boss oil duct for the finger (35) is opened to the boss part (14) inner peripheral surface for the upper connecting rod (3) finger, while the hole (35b) on its other end side is opened to the boss part (14) outer peripheral surface for the upper connecting rod (3) finger. The oil duct (36) of the lower connecting rod has the hole (36a) of the one end side, arranged so, that it is opened to the boss for the finger, facing the surface (33) of the lower connecting rod (2), facing the outer peripheral surface of the boss part (14) for the upper crank pin (3) and its hole (36b) of the other end side is arranged so, that it is opened to the bearing surface (37) of the crank pin. The oil duct (36) of the lower connecting rod is arranged so, that it is directed with the specified angle of connecting rod to the specific terminal edge among the hole end edges (35b) of the other oil duct end side (35) of boss for finger, and the specified end edge is facing the one end side of the upper rod (3).

EFFECT: increase of the lubricating oil supply to the bearing part of the boss for the finger, improve the seizing counterforce property of boss part for finger .

7 cl, 5 dwg