Effect of the engines unbalance on their resource, wearing parameters and the crankshaft main bearing wear nonuniformities

Experimental regularities for change of relative main quality figures values for engines with capacity 4.251 depending on their correction plane unbalances are stated. They are consistent with results of theoretical calculations. The obtained data can be used at standardization of these unbalancies. Unbalancies in both correction planes for new and overhauled engines with capacity 4.251 in acceptable limits enable to increase considerably their resource and trouble-free operation probability reduce wearing parameters and the crankshaft main bearings wear nonuniformities.