Reduction of wear of crankshaft bearings of V-8 engines by compensating the total unbalanced mass of the crank gear mechanism parts

Abstract

The work presents the theoretical principles of how to compensate the total mass of crank gear parts and to eliminate the auxiliary free total unbalanced moment emerging when reconditioned or improved pistons, connecting rods, piston rings, and conrod liners are installed in V-8 engines. It is achieved by increasing the mass of the counterweights and the distance between the center of gravity and the axis of rotation, by altering the angles of their arrangement, the mass-geometrical parameters, and the design of the sump plugs in the conrod necks, and by creating an engine-plane-directed imbalance correction. These methods enable compensation of the total unbalanced mass in order to eliminate the above-mentioned moment; they make it possible to balance the crankshaft, improve durability, and reduce the vibration and noise of the V-8 engine.