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Wearing parts of the cylinder-piston group and crank mechanism is one of the main reasons for putting a diesel engine into repair. Timely detection of the occurrence of intense wear allows you to prevent negative consequences, make timely repairs, eliminate the likelihood of unplanned exit of the locomotive from service. As a result of the study of the intensity of accumulation of wear products in engine oil, a mathematical model has been developed, which is implemented with the use of an artificial neural network apparatus. Its use allows to carry out an operational assessment of the technical condition of diesel engine parts in an in dividing way and to improve the technological process of repairing diesel engines of the D49 type

In article are considered standard technologies of ultrasonic inspection of under-hub parts of press-fitted wheelset axles accordingly to existing regulations: GD (Guidance Document) 07.09-97 and STO (Standard of the Organization) Russian Railways 1.11.002-2008, and proposed improve-ment measures of nondestructive inspection that are confirmed by calculation and experimentally

The article deals with the organization of operation when using cryogenic technologies for gas locomotives and isothermal cars (IV). The structure of transportation of perishable goods (SPG) by types of rolling stock and types of cargo and the peculiarities of transportation of frozen fish from the Far East to the central regions of the country is presented. On the example of their consideration, a new structure of the type of isothermal rolling stock (IPS) is proposed, including various types of single isothermal cars, large-capacity refrigerated containers and swap bodies. It is proposed to use the block-modular principle of forming energy refrigeration equipment for promising autonomous refrigerated cars (ARC). A review of promising ARC models developed by UralVagonZavod and Altayvagon, ready for serial production, has been carried out. The factors that should be taken into account when creating an innovative isothermal rolling stock are formulated. Variants of using cryogenic technologies for an autonomous refrigerator car and single insulated cars are considered. Based on the results of previously conducted operational tests of autonomous liquid nitrogen cars, the main their advantages and possible areas of use are given. The technology and technical solutions for improving the design of the cooling system of the cargo space for thermos cars cooled with liquid nitrogen have been substantiated. The calculated characteristics of the consumption of liquid nitrogen during the transportation of frozen goods are presented. The advantages of using environmentally friendly liquid nitrogen cooling systems are analyzed and the areas of using cryogenic technologies for isothermal rolling stock are formalized. Uncertainty and spontaneity of the perishable goods transportation market, along with the absence of a large customer, poses a difficult task for car builders to organize serial production of isothermal rolling stock with small production volumes and various technical characteristics. Therefore, when creating isothermal and refrigerator cars, it is advisable to focus on a single universal car kit based on an isothermal body with the possibility of transforming it by using various options for energy refrigeration equipment and chassis.

The used liquid wash solutions utilization problem in railway depots of Russian Federation was overviewed. Postulated, that it is important to solve ecological and energy efficiency problem together on railways. Authors shows, that in this moment level of development and using resource saving technology in railway depots is too low. Economical, juridical and technological aspect of this problem was analyzed. Shows, that in present conditions we need to treat wash solutions in the closed water recycling process. Simultaneously waste products must be concentrated and then used, taking into consideration, that concentrated waste products contains flammable oil-products. Proposed to combust it and generate heat energy. Taking review of oil-containing waste products concentration and combustion methods. Shows, that heat energy can be used for grows up energy efficiency of railway depots. Described theoretical basics, results of carried experiments, and economic effect was estimated. It`s proved, that proposed technology is useful and can be realized. Preferred construction of washing machines and waste treatment facilities are recommended. Ways of next research work are selected and proved.

By the author it is offered complex programs of association in uniform system of all processes of life cycle of locomotives, promoting reduction of the expenses connected first of all with operation and service of locomotive park JSC RZhD. The main indicator this complex the system is the level of readiness of a technical product determined by an availability quotient. The developed methodology will allow to pass from technology of fixation of technical refusals, with the subsequent identification of their reasons and carrying out recovery work, to the technology of forecasting and the prevention of these refusals based on a constant control of technical condition of locomotives and forecasting of a stock of a resource in the Online mode.

The article discusses issues of simulation modeling of technological processes of repair of rolling stock components. A model of the technological process of repairing a trolley (mod. 18-100) of a gondola car in an ARENA environment is given.

The article discusses the issues of using the technology of replacing inventory rails with rail lashes of a jointless track. For the production of works on the replacement of rail lashes, excavators on a combined course have been selected as the leading machines, which in recent years have been widely used in the production of works for the current maintenance and repair of the railway track. The paper presents the results of a comparative assessment of the use of rail lash replacement technology using attachments and using a pair of trolleys. In order to select the best technology for the production of works on the replacement of rail lashes, a methodology for assessing the economic efficiency of using a particular technology has been developed. The main indicator in the calculations were the given operating costs, taking into account the cost of the machine per unit of work, the cost of relocating the machine, the delay of trains, the wages of track fitters and the discharge of rail lashes. According to the results of the calculation, it was found that it is economically advantageous to replace rail lashes at the front of work up to 4 km using technology using a pair of trolleys, at the front of work more than 4 km, it is advisable to replace rail lashes using technology using attachments. The maximum economic effect when using technology with the use of attachments is achieved with a work front of 10 km. A comparison of the results of work on two technologies gives grounds to conclude that with a three-hour «window», the volume of work performed on the technology with the use of attachments is 1,7 times higher than the volume of work performed on the technology with the use of a pair of trolleys.