Evaluation of traction efficiency for the Tashkent Metro train formation with a trailer car and motor cars 81-717/81-714

This study examines a potential method for increasing the traction and operational efficiency of the Tashkent Metro by adding a trailer car to the 81-717/81-714 motor car set. Traction characteristics were modeled based on a mathematical representation of the observed track profile, traction force, and movement resistance. The results demonstrate that the proposed change in train composition enhances the ability to navigate complex sections of the urban railway and optimizes operations. Research methodology the traction efficiency of the train was evaluated using a mathematical model that includes parameters of traction engines, axle loads and track profiles. The research is carried out in difficult areas, including open spaces, where the requirements for traction characteristics are increased. The main results showed the simulation of the effectiveness of the new train with a trailer solution in difficult areas, which ensures increased operational efficiency. The results obtained can be used to further optimize the formation of trains, which will reduce the burden on infrastructure and increase the economic efficiency of subway operation in the face of current challenges.

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