采用搭建的气道试验台和实车试验系统研究了影响发动机排气背压的因素,同时量化了部分发动机工况下流量、背压和温度随时间的变化关系,为再生时机的判断提供了有力的数据支持.%The factors affecting the back pressure of diesel participate filter (DPF) are studied on exhaust duct tester built and real vehicle test system. In addition, the time histories of flow rate, back pressure and temperature in some working conditions of engine are quantified. These provide powerful data support for judging the appropriate regeneration time of DPF.
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