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利用车载测试系统(OBDCTS)和车载尾气检测(PEMS)对装配欧Ⅲ发动机的大型客车进行模拟公交运行实际道路试验,获得了实时的机动车排放数据。在此基础上得出颗粒物(PM)的粒径分布和排放随速度和加速度的分布图形,分析了速度、加速度对颗粒物排放的影响机理,从而得出结论:应当从改善城市道路交通状况和优化车辆的低加速和高减速工况时的发动机的喷油控制及燃烧质量着手,降低PM排放,减少机动车对大气污染。
Using OBDCTS and PEMS, the real road test was carried out to simulate the actual bus operation of the large passenger car equipped with Euro Ⅲ engine, and real-time vehicle emission data were obtained. On this basis, the particle size distribution and emission distribution pattern of particle (PM) with velocity and acceleration are obtained, and the mechanism of velocity and acceleration on particle emission is analyzed. The conclusion is that the improvement of urban road traffic conditions and optimization Vehicle low acceleration and high deceleration conditions when the engine fuel injection control and combustion quality to proceed to reduce PM emissions and reduce motor vehicle air pollution.