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104C型客车空气分配阀是“七五”国家重点科技攻关项目“扩编旅客列车制动问题研究”专题之一——“104阀改进”的研制产品。 随着铁路客运量的急剧增长,从1982年起铁道部开始逐步增加旅客列车编组辆数,但编组辆数超过15辆,旅客列车紧急制动时的纵向冲动将随着辆数的增加而大幅度地增大。严重时达到危及行车和旅客人身安全。 专题组历经方案选择、图纸设计、室内常低温性能试验、列车定置试验台试验、集二线的制动距离试验及沪杭线的运营考验等项研究试验工作,完成了攻关任务。1996年1月18日铁道部科技司会同部内车辆局、铁路机车车辆工业总公司在京召开了
104C bus air distribution valve is the “Seventh Five-Year” national key scientific and technological project “to expand the study of passenger train brake” one of the topics - “104 valve improvement” of the developed products. With the rapid growth of railway passenger traffic, the Ministry of Railways has gradually increased the number of passenger train cars since 1982, but the number of train cars has exceeded 15. The longitudinal impulse of emergency braking of passenger trains will increase as the number of vehicles increases Increase in amplitude. In serious cases, endanger the driving and passenger safety. The research team completed the research task of selecting key projects, drawing design, indoor low temperature performance test, train set test bench test, set of second-line brake distance test and operation test of Shanghai-Hangzhou line. January 18, 1996 Ministry of Railways Technology Department in conjunction with the Department of Vehicles, Railway Rolling Stock Industry Corporation held in Beijing