Research of impact of the loading on endurance of the freight locomotive engines

Abstract

The publication reflects the research results of the rationalization of the rolling stock use of JSC LG Lithuanian railways to incr ease the reliability indicators of the freight diesel locomotive exploitation reliability. The comparative evaluation of the exploited freight diesel locomotive work duration, according to the technical documentation, by using comparative test results and indirect diesel reliability criteria approved in practice. An algorithm of work duration forecasting methodology has been created, as well as a programme complex of mathematic modelling. The differences of the results indicated in the experiment and modell ed by computer do not exceed 5÷7 %. The proposed and described methodology of the diesel locomotive exploitation load cycle dynamic indicator reduction, by the use of which the following is achieved: increase of the diesel work duration by 7÷10%, reductio n of fuel consumption up to 10%, reduction of the load cycle dynamic indicators (increasing the fatigue stress of parts and unit s of the diesel) by 15÷20%.