Crankshaft, particularly casted crankshaft for internal combustion engines, has two base pins and crank pin, which is connected with adjacent base pin by crank webs, where base pin and crank pin comprise axial through-holes

摘要

The crankshaft has two base pins (2,4) and a crank pin (10), which is connected with the adjacent base pin by crank webs (14,16). The base pin and the crank pin comprise an axial through-hole (22,28). The through-holes in the base pin or in the crank pin extend conically to their outlet openings in the crank webs. The through-holes in the base pin and the crank pins extend conically at an angle of 2 degree from corresponding central axis (8). The through-hole in the crank pin has an oval contour, particularly an egg curve, whose tip is facing away from the central axis of the crankshaft.