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Article is devoted to settlement pilot studies of air-gas system of the diesel locomotive improved by a cyclone-electrofilter. The main attention is paid to determination of the overall performance, the developed air-gas system. The mathematical model of gasdynamic processes of air-gas system which allows to estimate influence of a geometrical configuration and electro-dynamic impacts on process of purification of the fulfilled gases from firm soot is constructed. Comparison of the obtained settlement data with experimental is carried out.

Process operating diesel locomotive associated with the gradual deterioration of parts of the cylinder-piston and crank mechanism. Periodic assessment without taking for the pieces of these groups is possible when using a method based on an analysis of the current values of the control concentration of wear. One of the main problems in the implementation of this method is the problem of estimating the amount of metal worn with controlled parts on the analysis of the current values of the concentration of wear. The article describes the method of calculation and simulation results of the system clean engine oil diesel D49.

The reliability of diesel engines is mainly determined by the reliability of operation parts of the cylinder-piston group and crank mechanism. High-quality cleaning of engine oil during operation of mechanical impurities, provided filters coarse, fine filter and centrifugal filter, reduces the rate of wear and tear. The results of simulation of a centrifugal filter to assess its efficiency and the quality of screenings of particles of different sizes in the process of exploitation.

The article discusses the approach to evaluation of technical condition of the diesel locomotive power plant fuel system as a part of an integrated microprocessor control systems. Presents an approach of generalized evaluation of technical condition of the power plant fuel system. By results of the analysis of a fuel system graph model set of control parameters is selected, the algorithm allowing to establish the reasons of controlled parameters output of admissible limits is developed.

In article stages realization of complex systems non-contact thermal control of the main knots and systems locomotives are considered. The developed techniques of an assessment technical conditions sections refrigerators, electrical machines and the fuel equipment of a high pressure locomotives with use thermovision control method are presented.

The main direction of decrease in operational costs on draft of trains is reduction of expenses by fuel and energy resources, decrease in repair expenses at the expense of increase of indicators of operational reliability of power installations of a diesel rolling stock. It is obvious that the solution of these problems, now when operational profitability of diesels and their reliability are on a limit for the developed service conditions and production of diesel locomotives, it is possible at the expense of application of alternative types of the fuel which use will allow to raise both reliability of a diesel rolling stock, and its profitability under operating conditions. One of such alternative fuels can, is either natural gas, or household oil gas, that is a butane and propane mix in various ratios. In the present article on the basis of mathematical models possible ecological and economic efficiency of use of мix types of fuel on the example of the diesel 2A - 5D49 is shown.

As a result of work statistical data bank of hardware and software complex «Bort» was researched. Methodology for TEM2 locomotive deiesel-generator plant parameters indicating while running hours transformation in integrated time space is suggested.

The results of the study the possibility of using artificial neural networks in identification problems failure status diesel D49, the results of spectral analysis of the crankcase oil. The obtained results are needed to develop software for evaluation of the degree of wear and tear as a result of the diesel locomotive spectral analysis of engine oil.

The design of the hydrostatic fan drive of the cooling system of diesel engines of passenger locomotives of the TEP70 all series is considered. According to the results of the analysis of malfunctions of components and parts of the cooling system of locomotives, it showed that the main reasons for the failure of the hydrostatic fan drive are: the destruction of the housing and overheating of the bearings of the hydraulic motor, oil leakage at the installation site of the rubber diaphragm and loss of rigidity of the spring of the thermostat. The reasons for which are often the temperature conditions and the life of the parts. The article discusses the issues of improving the efficiency of the hydrostatic fan drive of the cooling system of diesel locomotives. An increase in the life of the hydraulic motor can be achieved by eliminating idle from its operating time, since it is connected by a rigid coupling with the diesel shafts. Ensuring the independence of the operation of the hydraulic motor relative to the diesel engine is possible by changing the design of the hydraulic fan drive, by installing a viscous coupling for the transfer torque of the shaft only during the period of necessary useful work, when a certain oil temperature is reached. To increase the reliability of the thermostat, the possibility of installing an additional rubber diaphragm with increased tension force, for trouble-free operation of the thermostat when the pressure reaches 12 MPa and when the oil viscosity decreases, is considered. A malfunction of the thermostat often leads to the most serious consequences, up to the failure of the locomotive, where the most common cause is the loss of rigidity of the spring of the thermostat due to the jamming of the spool, which affects the redirection of the oil flow, and there is a high probability of an increase in the temperature of oil or water in the system. The considered main malfunctions of the hydraulic fan drive and ways to solve them will significantly increase the reliability of its operation and the efficiency of passenger locomotives.

The article discusses the approach to operational evaluation of technical condition of the diesel locomotive power plant functional subsystems as a part of an integrated microprocessor control systems. Presents an approach to operational evaluation of technical condition of a fuel system. By results of the analysis of a fuel system graph model set of control parameters is selected, the algorithm allowing to establish the reasons of controlled parameters output of admissible limits is developed.

Theoretical analyze of liquid fuel movement in low-pressure line (LPL) of diesel fuel supply systems is implemented. To solve LPL the equations set of homogeneous blend is suggested. It is shown that when using alternative fuels in locomotive and ship diesels the retrimming of fuel equipment is required, and it’s reasonable to use the degree of irregularity of working process as diagnostic indicator.

The subject of the study is the fuel utilization system of a diesel power plant as a diesel locomo-tive or other vehicle main lead, which is a complex technical system consisting of actual diesel in-ternal combustion engine, fuel lines and low pressure fuel processing and high pressure line includ-ing various elements of liquid fuels consumption dosing and control. The aim of our study was to analyze the system functioning, to determine the dynamic proper-ties and the nature of changes in the internal parameters of the system as a whole. To achieve the goal the system analysis methods were used. The processes of complex technical system operation were interpreted by means of the continuous linear stationary deterministic model of the list of others. For this particular model the body of mathematics developed on the basis of linear differential equations with constant coefficients is the most complete one. The chosen mathematical model was presented by us in the first stage in the form of a finite graph as a subgraph of obtained earlier generalized model which had both methodological and theoretical foundation. In accordance with the methodology of the systematic approach the graph model of the diesel power plant fuel utilization system operation was described in relation to major significant factors affecting the system parameters transformation dynamics. Given the complexity of the of fuel ignition and combustion mechanism located in the diesel engine cylinder, the use of the techniques of the modern automated control theory is adopted for numerical processes simulation with the system described in terms of the said theory. The criteria of efficiency, mechanical loads and thermal loads levels were chosen as the fuel utilization system internal state variables. Taking into account the Pareto principle the most important efficiency criterion components were chosen for the analysis; and the system of differential equations of the efficiency dynamics in the form of three balance equations was created. The factual description of the included equations allowed us to derive preliminary qualitative conclusions about the dynamic properties of the internal criteria: controllability, observability and stability of the fuel utilization system. The differential equations system parameters linearizing procedure and the introduction of small deviations allowed us to obtain the dynamic mathematical model of the fuel and air transfor-mation in the diesel engine heat cylinder. As the result of transformations we have obtained the equations presented in the form of the matrices, which allowed us to conclude that the process of the fuel and air transformation in the cylinder is controllable, the system is asymptotically stable, and the process is stochastic with the presence of perturbing parameters influenced by the engine's variable modes of operation. The further research areas have been suggested, and the practical results have been predicted: the creation of optimal (in terms of efficiency) control system with the technical solution in the form of the optimal controller (in relation to fuel consumption).

In article stages developments of power plants autonomous locomotives from the steam-engine to gas-turbine engines and engines on fuel elements are considered

Cleaning of engine oil from contaminating particles and products of wear of parts is an integral part of reliable operation of friction parts of locomotive diesels. The presence of solid particles in the oil leads to abrasive wear of the parts, and as a result reduces their resourceability. Onboard cleaning systems used on locomotives are not able to carry out fine-dispersed cleaning of engine oil. It is proposed to use an external stationary installation of centrifugal cleaners, which will increase the efficiency of cleaning and clarification of engine oil in the planned types of repair and maintenance of locomotives.

There are results of researching regularities of chafing cylinder-piston group and crank rod mechanism in the diesel engine D49. The results are necessary for creation method of diagnosing locomotive diesel without taking for the pieces but just with the results of spectral analysis of engine oil.

The analyze of fuel supplying methods in diesels with respect of fuel properties was implemented. The new method was suggested, which can estimate impact of physical and energy fuel properties on power and economic indexes of a diesel. The diesel effective work conditions on low-viscosity fuels are formulated, including regulation and constructive changes in fuel supply system.

It is offered the technique for the assessment of the efficiency of the application of the mixed hydrocarbonic kinds of fuel in the power installations of diesel locomotives. The model calculations have been executed with a glance of the changing of the physicochemical and thermalphysic characteristics of the fuel mixtures and the service conditions of diesel locomotives.

The article suggests the method of monitoring the consumption of fuel for shunting and household works using the onboard systems. The first results of the evaluation of the effectiveness of the use of this method in the course of the experiment station «Omsk - Passenger»

The method of determining the durability indicators of wheel pairs of locomotives is considered on the example of diesel locomotives of the 2TE25KM series operated on the Volga railway. For this purpose, the 90% resource of the wheel pairs of the studied series of locomotives was determined, and it was compared with the accepted standard indicator. In addition, a controlled parameter of the wheelset is selected, limiting the reliability of this node. To conduct the study, methods of mathematical statistics and probability theory were used, in particular, the Laplace distribution function, the Student's criterion, as well as the results of calculations of the dependencies of the mean value and the standard deviation of the controlled parameters, the initial values of developments and operating time corresponding to the probability of failure 0.5. In this study, a mathematical model for assessing the durability of wheelsets from the point of view of reliability theory was developed. The evaluation of the durability indicators of the wheelset elements was carried out on the basis of the type of random variable distribution law with its parameters obtained on a computer and adopted according to the Pearson criterion. As a result of the calculations, 90% of the life of the wheelset was obtained according to two controlled parameters, which amounted to 476.6 thousand km for the thickness of the bandage, and 282.6 thousand km for the thickness of the ridge. The results obtained were compared with the values adopted in the Technical Specifications for this series of locomotives (800 thousand km). km), as well as with statistical data on the values of controlled parameters obtained during processing and analysis - 240 thousand km. Due to the fact that in operation the average life of the wheelset is determined by a larger number of controlled parameters, taking into account unscheduled repairs, and in this study - only on the basis of the thickness of the bandage and the ridge, it is not possible to talk about full compliance with the calculated and actual data. According to the results of calculations, the limiting reliability of the wheelset is such a controlled parameter as the thickness of the ridge. For a more accurate assessment of the durability of wheelsets, it should also be taken into account that the intensity of wear of rolling stock equipment is affected by specific operating conditions, in this regard, inter-repair runs should be adjusted taking into account the influence of external factors during operation. In order to fully assess the durability of wheelsets in the future, it is necessary to take into account additional factors, in addition to those that affect the parametric change of random variables, as well as the fact that takes into account the monitoring and analysis of all controlled parameters of this node during the operation of locomotives.

The article deals with the possibility of energy utilization of exhaust gases of diesel-generator sets of locomotives during load tests. The calculation of the amount of heat carried out during tests with exhaust gases. Possible variants of heat utilization with the use of various heat exchangers are considered.

In article from positions of uniform life cycle locomotives, from creation before write-off, the major factors influencing the level of their reliability are considered. Value of these factors will give the chance to connect mathematical model the potential level of reliability put in the specification on design of new locomotives with the actual reliability in specific conditions of operation and on this basis to determine the optimum parameters systems of maintenance and repair corresponding to maximum efficiency of use locomotives for all life cycle.

The subject of consideration of this article is the traction electric motor of a diesel locomotive. Traction electric motor (TED) is the main element of power transmission, therefore, the reliability of the locomotive as a whole depends on its reliability. The main causes of failures of traction motors in operation are considered. Based on the analysis of statistical data, it can be argued that the most damaged part of the traction motor is its armature. In the context of the introduction of new classes of insulation heat resistance by the new standard - GOST 2582-2013 - ensuring the reliability of the anchor is especially important. The causes of the most common failures of TED in operation have been established: violation of the integrity of the insulation of the winding by the sharp edges of the extreme sheets of the anchor core iron package when laying the winding in the grooves of the core, vibration of the extreme sheets of the anchor core iron package when exposed to electromagnetic forces with a frequency multiple of the number of poles of the electric motor, imperfection of the fastening system of the frontal parts of the armature winding, mismatch of the coefficients of temperature linear elongations copper windings, insulating materials and steel core of the armature. The result of the analysis of the design of serial TED were proposals to improve the design of the nodes most prone to failures. To eliminate breaks in the insulation of anchors in operation, a new design of pressure washers and an improved technology for impregnating anchors of commercially produced traction electric motors of locomotives are proposed. The proposed design solutions can be used both when creating new TED designs for promising locomotives and when upgrading serial designs. Thus, the application of the proposed design and technological solutions will increase the reliability of the diesel locomotives.

This article is about technical and economic indicators of the operation of freight locomotives at the ranges of Russian Railways. The most attention is paid to such indicators as train mass, fuel consumption, technical and district speed. There is an analysis of technical and economic indicators during the period from 2010 till 2019. Based on the analysis of technical and economic indicators in the real mode of operation of freight diesel locomotives it's presented calculation of dimensionless train mass coefficients, fuel efficient use, district and technical speeds. The presented calculation fully characterizes as well using degree of technical and economic characteristics of diesel locomotives in of power and time as the effectiveness of system organization in their operation. To know the operating modes of diesel-generator sets of diesel locomotives in train work is source material for the analysis of technical characteristics of locomotive power equipment and making recommendations on their optimization in relation to operating conditions

At this time the traction electric motor (TEM) is one of the most important elements of the design of rolling stock, since the safety and stability of the transportation process on the railway network of JSC "Russian Railways" depends on its uninterrupted operation. This article is given a detailed analysis of the TEM failures of diesel locomotives of the 2,3TE10 v / series and the assigned fleet of the Novaya Chara locomotive depot of the East Siberian Traction Directorate. The section of circulation of diesel locomotives from Taksimo station to Hani station is one of the most difficult not only in the borders The East Siberian Railway, but also the entire railway network of the country. The analysis of the statistics of the reasons for the failures of the TEM of locomotives of the Novaya Chara locomotive depot for 2006 - 2012 showed that there is a rather extreme operation mode and that most of the failures are due to the breakdown of the insulation of the anchor winding of the TEM. During a research trip to the diesel locomotive maintenance site, a team of IRGUPSA scientists conducted full-scale measurements speed of movement, driving mode of the train, heating temperature of the TEM, taken into account the climate factors - ambient temperature, relative humidity, pressure and others. After studying the available information, it was proposed to additionally coat the insulation with FL-98 varnish in order to maintain and restore its properties in the conditions of the Winter locomotive depot during TR-3. IRGUPS has been working for a long time to study the process of drying insulation using infrared radiation (IR). The effectiveness of this method has been proven by numerous experimental studies. Several PhD theses have already been defended in various dissertation councils on this topic. This article presents also the statistics of failures of operated TEM already with additional varnish-impregnated insulation of open frontal parts after the implementation of measures based on the results of the work of the IRGUPS group of scientists. It is established that the method of applying the compound to the insulation of the frontal part of the windings of electric machines and encapsulating it with the help of IR radiation energy is effective in combating TEM failures due to insulation breakdown.

The article deals with the analysis of the modes of operation of shunting locomotives; characteristics of the setting characteristics of the traction generators when performing resistance tests of locomotives. The statistical average values of the load parameters of diesel generator sets of shunting locomotives TЭM2 in the process of performing shunting work on marshalling and precinct stations. When monitoring the external characteristics of the locomotive when performing resistance tests with the ASKI "CYPRESS" was observed of the external characteristics of a normal ("classical") and "convex" shape. Normal (classical) external characteristics of the locomotive TЭM2 No. 1 equidistant removed from the borders of the tolerance field; and "convex" external characteristics of the locomotive TЭM2 No. 2 , in the field of tolerance, support of the constancy of the power diesel generator sets, due to the imperfection of the machinery of the regulatory system, particularly the Electromechanical characteristics of the pathogen.