Abstract
Objective: Studying the effect of diesel locomotives on the use of natural gas as motor fuel. Identification of the main advantages of using natural gas in internal combustion engines. Analysis of the effect of gas engine fuel on the performance of diesel locomotive power plants. Methods: Simulation of the working process of two engines: the first – on diesel fuel, the second – on the gas mixture. Adjustment of the mathematical model according to the real parameters of 1А-5Д49-2 diesel engine, taken during the rheostat tests of 2ТЭ116 diesel locomotive. Conducting calculation and experimental studies to assess the effect of the complete replacement of diesel fuel with natural gas on the operation of the locomotive power plant; accumulation of computational and experimental data, their systematization and statistical analysis. Theoretical dependences of the change in the specific effective fuel consumption of a diesel engine operating on natural gas through the gas cycle on the position of the driver’s controller, as well as dependences of the change in the effective performance of a diesel engine have been discussed. The calculated values are compared for the diesel engine operating on natural gas and the diesel engine operating on diesel fuel. Results: The calculated dependencies of the performance of Series 1А-5Д49-2 (16ЧН26/26) diesel engine of 2ТЭ116 diesel locomotive with the use of gas engine fuel have been obtained. The obtained data has been analyzed allowing carrying out theoretical estimation of efficiency of natural gas used as gas engine fuel throughout the entire operating range of 1А-5Д49-2 (16ЧН26/26) diesel engine of 2ТЭ116 diesel locomotive. A conclusion was confirmed about the expediency and efficiency of using natural gas in railway transport, particularly diesel locomotives. The influence of replacement of diesel fuel with natural gas on the performance indicators of diesel locomotives has been determined. Practical importance: The obtained dependencies will help in forecasting and in the theoretical evaluation of the feasibility of using natural gas as a motor fuel for locomotive power plants.
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