Connecting rod rods bearing for internal combustion engines and the connecting rod rods bearing device

摘要

It is a connecting rod rods bearing (22) for crankshafts with a pair of semi-cylindrical bearing (24, 26) is described. External grooves (un) (24c, 26c) on the inner bearing surface extend from each circumferential (24a, 268) in the direction of the circulation means point with a maximum rotational angle (θ) of 45 degrees and divide the region of reduced wall thickness (248, 268) into two sections. Along the abutting of the bearings are axial, which is connected with the us in grooves (40 and 50) is provided. The perimeter length of the us is greater than the reduced area. The depth of the us increases from the end gradually decreases toward the center. The width of the us is not less than one quarter of the diameter of the lubricating oil outlet opening (20a), but smaller than the diameters thereof. The cross-sectional area of the un is greater than that of the axial grooves in the region of connection thereof.