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以公交车为例,利用OBS-2200和ELPI(electrical low pressure impactor)对深圳市重型柴油车(high-duty dieselvehicles,HDDVs)进行了3次在实际道路上的车载排放测试。根据测试数据计算了NOx和PM排放因子及百公里油耗,并分析了不同道路、不同工况对NOx和PM排放及燃油消耗的影响。研究表明,深圳市快速道上交通状况良好,有效地降低了排放;次干道上NOx和PM排放因子分别为16.85 g/km和3.24 g/km,比其他道路要高;加速工况是排放最恶劣、耗油最多的工况,NOx和PM质量排放率分别为137.50 mg/s和37.65 mg/s,燃油消耗率为15.15 L/h;车辆在高速状态下加速时的NOx和PM排放比车辆启动时要高。
Taking bus as an example, the vehicle was tested on the actual road with three high-duty diesel vehicles (HDDVs) using OBS-2200 and ELPI (electrical low pressure impactor). Based on the test data, the NOx and PM emission factors and the fuel consumption per hundred kilometers were calculated, and the effects of different roads and different operating conditions on NOx and PM emissions and fuel consumption were analyzed. The research shows that the expressway traffic in Shenzhen is in a good condition and the emission is reduced effectively. The emission factors of NOx and PM on the arterial road are 16.85 g / km and 3.24 g / km, respectively, which are higher than those of other roads. The acceleration is the worst emission , And the fuel consumption was the highest. The emission rates of NOx and PM were 137.50 mg / s and 37.65 mg / s, respectively, and the fuel consumption rate was 15.15 L / h. The NOx and PM emissions of vehicles accelerated at high speeds were higher than those of vehicles When high.