Diesel locomotive efficiency and reliability improvement as a result of power unit load control system modernisation

Abstract

The article presents an idea of modernisation of a diesel locomotive power unit load control using SM31 locomotive. In the proposed solution an electronic rotations and power governor of a8C22W diesel engine is applied, developed in cooperation with Lokel (the Czech Republic) and Newag S.A. (Poland), in which a new optimal operational characteristic is realized in the locomotive. This characteristic was selected following optimization calculations using a mathematical model mapping the real conditions of the motor-generator work in a diesel engine. Test stand experimental investigations together with an over three-year supervised observation of the locomotive equipped with the electronic governor have proved its correct and reliable operation. Based on the data collected in supervised observation the efficiency of the proposed solution has been assessed, supported by an LCC (Life Cycle Cost) analysis.