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The article summarizes and analyzes data on the use of natural gas (methane) as an additive to diesel fuel on the low-pressure line of diesel engines of locomotive CHME3.The results of The gas engine fuel effect assessment on the efficiency of locomotives CHME3 are presented.

The article is devoted to one of the urgent problems in the activities of JSC “RZD“- increasing the energy efficiency indicators of locomotives, namely, new generation locomotives running on liquefied natural gas (LNG) - GT1h series gas turbine locomotives. The results are presented for the analysis of typical diagrams of traction work at hauling trains by the gas turbine locomotive on the Surgut - Voinovka section of the Sverdlovsk Railway. Measures are proposed to reduce the specific consumption of the fuel used for hauling operations for various running duties of a gas turbine locomotive (traction mode, idling, transient modes). The justification and description are given for the selected technical solutions to reduce fuel consumption by the “gas turbine engine-traction generator” system during gas turbine locomotive operation in idle and traction modes. The results of tests of the gas turbine locomotive during idling and in traction mode using the proposed technical solutions are presented. The comparative analysis of the results obtained is carried out and the economic assessment of the effectiveness of the selected measures is given when the gas turbine locomotive is operating in idle and traction modes. A mathematical model is proposed for the electric traction drive and the automatic control system of the gas turbine locomotive, developed using the Matlab Simulink environment and designed to study the operation and optimization of electromagnetic processes occurring in the electric traction drive of the gas turbine locomotive in various modes of its operation. Based on the results of modeling the algorithms for the operation of the automatic control system (CAP) allowing to provide energy-optimal loading paths for the “gas turbine engine - traction generator” system in the entire power control range, the economic assessment of the effectiveness of the CAP algorithms is given. The economic assessment is presented for the implementation of a set of proposed measures to improve the energy efficiency of gas turbine locomotives.

The growth of production capacity requires a constant increase in fuel consumption, which leads to an inevitable decrease in fossil fuels, whose reserves are limited. As a result, it is necessary to gradually switch to the use of secondary energy resources, in particular, the use of secondary gases generated as a result of production processes. This article discusses the use of natural gas conversion by adding it to a high-temperature converter gas stream in order to reduce its temperature to reduce the thermal load on the heating surface and further use as the main fuel in power units. Using the Ansys Fluent universal software package, a computational model of a natural fuel converter gas pipeline was developed, and the distribution contours of the composition and temperature of the fuel mixture formed by the chemical interaction of gases were obtained. The analysis of the obtained fuel mixture was carried out, and the efficiency of the obtained synthesis gas was compared with the initial fuel. It was shown that as a result of a chemical reaction, the resulting gas has an increase in thermal efficiency by 64 %. The results of this study demonstrate the possibility of further application of the resulting fuel mixture as the main fuel for technological processes.