The Method of Improving Fuel Efficiency of a Diesel Generator Set of the Locomotive in Operation

This paper is necessitated by the need to improve fuel efficiency indicators of power units in shunting diesel locomotives that work under frequently changing speed and load conditions. The conditions with partial rotation frequency of the diesel crankshaft and partial load usually prevail. Fuel efficiency indicators remain the main parameters that characterize locomotive diesel efficiency. The method of improving fuel efficiency of a generator for a diesel locomotive, which optimizes the locomotive characteristic is proposed. Calculation techniques are developed. As a rule, the locomotive characteristic is determined empirically. The proposed method allows an informed selection of the form of this characteristic. The calculations of the optimized locomotive characteristic of the diesel generator 21-26DG for the locomotive 2TE25K are performed. The realization of this characteristic helps to reduce fuel consumption of the diesel generator set of the locomotive under operating conditions, while ensuring acceptable thermal stress indicators of the diesel engine parts.

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