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Abstact. During automated rheostat tests of locomotives itʹs necessary to control a lot of parameters of the diesel generator set and support systems. Due to the features of perception of the information by human the control is brought to the observation of a small number of parameters. Implementation in practice of rheostat tests of automated systems of inspection and testing allowed to expand the amount of received information. In this article is offered using automated control systems of diesel-generator sets parameters during rheostat tests which allow to accumulate and analyze test date using developed protocols forms and pivot tables with parameters in entire range of loads, also it helps to determine the quantitative index of a technical condition of diesel-generator set.

The article presents a comparative analysis of the effectiveness of automated systems for recording the work parameters of autonomous locomotives. The relevance of the use of such systems is due to the prevention of defects at the stage of identifying possible malfunctions during the operation of locomotives during the inter-repair periods. So the used systems of parametric diagnostics of power plants of autonomous locomotives are considered. Also, for comparison, the experience of foreign research on the use of a diesel locomotive monitoring system is presented. Despite the fact that the existing automated systems for registering the parameters of diesel locomotives have a wide range of functionality that allows you to obtain typical dependences of the power of a diesel generator set (DSU) on temperature and pressure, these systems do not take into account the peculiarities of the flow of in-cylinder processes that can significantly affect the power of the DSU. The article proposes a method for monitoring and adjusting the power of the diesel engine during operation by registering the operating modes of the equipment and determining the actual power of the diesel engine by expanding the range of diagnostic parameters by installing additional sensors for registering measured values for the accuracy of monitoring and tuning the diesel engine and making timely decisions on maintenance and repair of locomotives. A block diagram of the recorder of operating modes with the location of sensors for measuring informative parameters and a diagram of connecting the recorder to the power circuit using the example of a shunting diesel locomotive CHME3 is shown. Software has been developed that can be additionally installed in the standard automated system for registering the parameters of the operation of the CHME3 diesel locomotive with subsequent data processing.

On the basis of a previously proposed General method of using a database of measurements onboard system parameters diesel generator set of shunting locomotives a technique of determining the distribution law of the values characterizing the intensity of change of current of the traction generator, evaluation parameters, determining a model function of the parameter changes on the overhaul period. The technique and criteria for assessing the technical condition of the diesel generator set of the observed locomotive using the model function are given