[Objective] City rail transit vehicles are specifically designed and developed models to adapt to city rail transit lines, differing in operational environment, line parameters, and vehicle configurations from high-speed railway EMU and urban rail transit vehicles. It is essential to conduct research on the maintenance mode for city rail transit vehicles. [Method] From the perspective of balancing vehicle reliability and economic efficiency, a suitable maintenance mode for city rail transit vehicles is proposed. The requirements for city rail transit vehicle maintenance from relevant standards are compared and analyzed, using these standards as the primary reference for the maintenance mode formulation. The operational status of vehicles on four launched city rail transit lines in China is surveyed to obtain actual vehicle maintenance data. Two of these lines are selected as examples for analyzing the compatibility of their actual RAMS (reliability, availability, maintainability, and safety) data with component lifespans. The vehicle maintenance system is comprehensively evaluated from the perspectives of safety, economic efficiency, and equipment lifespan compatibility. [Result & Conclusion] The formulation of maintenance schedules for city rail transit vehicle must consider two key factors closely related to component lifespans: operating time and mileage. The maintenance mode with optimal compatibility between these two factors should be selected. Routine operational maintenance of city rail transit vehicle is divided into two levels: train inspection (Level 1) and monthly inspection (Level 2), which uses operating time or mileage as assessment indicators. The advanced maintenance mode is categorized into a series of schedule maintenance, medium and major overhauls, or into a Level 3, Level 4, and Level 5 maintenance series.


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    Title :

    Research on Maintenance Modes of City Rail Transit Vehicles


    Contributors:
    WANG Tiemin (author) / WAN Tiejun (author) / LIU Wenbo (author) / GUO Jianping (author) / XU Wenyao (author) / HOU Jixuan (author) / MA Xuan (author)


    Publication date :

    2025




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    Unknown




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