排放检验机构柴油车尾气净化系统开发

Development of diesel vehicle exhaust purification system for emission inspection institutions

为解决排放检验机构严重污染周围环境的问题,基于现行国六后处理技术路线,结合加热装置以及流量测量装置,以英飞凌XE164单片机为核心,设计一种排放检验机构柴油车尾气净化系统,根据净化目标确定尿素喷射量计算模型,进行实车试验,测试NO_(x)和可见污染物的净化率。结果表明,设计的排放检验机构柴油车尾气净化系统可靠有效,对NO_(x)及可见污染物的净化效果显著,NO_(x)的净化率为80%,可见污染物的净化率为90%,有效解决了柴油车排放检测环境污染问题。

In order to solve the problem of serious pollution of the surrounding environment of the emission inspection agency,based on the current China VI postprocessing technologies and Infineon XE164 microcontroller,a diesel vehicle exhaust purification system of the emission inspection agency is designed combining with the heating device and the flow measurement device.According to the purification target,the calculation model of urea injection amount is determined,and the real vehicle test is carried out to test the purification rate of NO_(x) and visible pollutants.The results show that the designed diesel vehicle exhaust purification system is reliable and effective,and the system has a significant purification effect on NO_(x) and visible pollutants.The purification rate of NO_(x) is 80%,and the purification rate of visible pollutants is 90%.This purification system effectively solve the problem of environmental pollution in diesel vehicle emission testing.