CR200J3型动力集中动车组空调故障分析及改进

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中图分类号：U266 文献标志码：A doi：10.20213/j.cnki. tdcl.2025.02.025

Abstract：In order to meet the needs of passengers in terms of comfort，economy and safety，China Railway Urumqi Group Co.，Ltd. is equipped with 35 sets of “Fuxing”CR200J3 power-centralized EMUs with a speed of 160km/h . The power-concentrated EMUs operate at extreme high temperatures higher than 40∘C ，and the internal protection unit of air conditioning fails frequently. In order to address this issue，this paper conducts an analysis of the operational environment of a power-concentrated EMU，the internal protection logic of the air conditioner，the activate logic of the bypass valve，and the operation and maintenance.The findings indicate that high temperature and strong radiation are theexternal factors responsible for the failureof high-pressure protection in the air conditioner. The internal control logic of the air conditioner is deemed unreasonable，and the bypass valve is not activated，resultingin the failure of air conditioner protection.Set theredundant number of pressure switch actions to five，optimize the activate logic of the bypass valve，ensure the activation of the bypass valve，and shorten thecleaning cycleof theair conditioning filterfrom 9O days to 30 days，and 15 days in high temperature，strong radiation，and strong wind and sand environments.All of these measures orevent the malfunction of the high-pressure protection of the air conditioner and enhance the comfort of ）assengers.

Key words： power-concentrated EMU； failure analysis；air conditioning；high temperature; improvement

随着人民生活水平的日益提高，为满足广大乘客在舒适性、经济性、安全性等方面的需求，时速 160km “复兴号"CR200J型动力集中动车组（以下简称“动力集中动车组"）应运而生[，动力集中动车组的投入和使用对普速客车进行了转换升级，逐步推行了普速列车动车化，以夕发朝至和“三进"直通列车为主[2]。（剩余5983字）