CRANKSHAFT FOR AN INTERNAL COMBUSTION ENGINE

摘要

A crankshaft 1 of an internal combustion engine has a flywheel 6 provided at one end of the crankshaft and a main-bearing journal 23 adjacent to the flywheel. An annular groove 5 is provided on the periphery of the main-bearing journal 23, so that the crankshaft 1 is bent at the groove by forces on the crankshaft so as to diverge stresses.