The investigation and analysis are made on the natural braking in operation of very few cars with 104 type passenger car distribution valves and with electronic WSPs.
对装用104型客车分配阀且带电子防滑器的个别车辆在运行过程中发生的自然制动现象进行了调查与分析，并提出了相应的建议。
Based on the inhouse structure of JZ-7 air brakes, the design scheme of distribution valves for passenger locomotives was proposed and the main valve of new distribution valves was developed.
从JZ 7型空气制动机本身的结构出发，提出了客运机车分配阀的方案，研制了新的分配阀主阀。
The results show that the uneven distribution banded carbide due to abnormal spheroidization is one of important factors causing the quality problems of the valves after electric upsetting.
结果表明，由于球化不良而产生的不均匀带状碳化物是造成气门电镦质量问题的重要因素之一。
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