系统工作原理是：DPF过滤柴油机排气中的颗粒物（PM），从而使排放达到相应的标准。
The working principle of the system is: DPF filters the particulate matter (PM) in diesel engine exhaust, to make emission up to certain standard.
本文设计了一种测量车用柴油机排气微粒的分流式稀释取样系统并制出了实验样品。
A partial flow dilution sampling and measuring system for automotive diesel engine exhaust particulates was designed and a prototype was manufactured.
采用数学规划优化方法对N8160ZC柴油机新型螺旋流排气系统结构参数进行了优化设计；
The structural parameters of swirl flow exhaust system for Model N8160ZC diesel engine have been calculated by using the mathematical optimum method for optimum design.
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