客车制动气室气体入口直径对压力特性影响的研究

摘要

根据客车气压制动系统,建立气室气体入口、气室内腔压力等关键部件的数学模型,参照国际标准搭建制动气室压力特性试验平台;通过试验与仿真,导出四种入口直径下的气室内腔压力、推杆位移等试验和仿真参数;从压力响应时间、系统节能、系统稳定性三个方面分析气室气体入口直径对压力特性的影响.试验和仿真数据结果具有良好的一致性,可为制动气室的分析与设计提供参考.%Mathematical model of chamber inlet, chamber internal-pressure and other key components are developed based on bus air brake system, and brake chamber pressure characteristics test loop is build with reference to relevant standards. Such as chamber internal-pressure, push rod displacement and other experimental and simulation data of four sizes inlet diameter is obtained. Then from pressure response time, system energy saving and system stability three aspects analyzes the impact chamber inlet diameter on brake chamber pressure charac-teristics. The good consistency of test and simulation data can provide a reference for the analysis and design of brake chamber.