摘要
基于车载尾气检测设备(portable emission measurement system,PEMS),研究了国Ⅵ重型车气态污染物的排放特征;基于单位燃油消耗排放因子、单位行驶里程排放因子、单位时间排放因子,分析了NO_x、HC、CO污染物随路况的变化规律。实验结果表明,NO_x、HC、CO气态污染物较国V重型柴油车下降幅度较大,3种气态污染物分别下降88%、98%、62.7%。采用功基窗口法对数据进行整理分析,NO_x测量结果为460 mg·(kWh)~(-1),CO测量结果为192 mg·(kWh)~(-1),HC测量结果为37.5 mg·(kWh)~(-1),该重型柴油车可以满足国Ⅵ车载法规的要求。研究结果可为国Ⅵ重型车排放标准制定及其在环境污染控制领域的应用提供参考。
The emission characteristics of gaseous pollutants from China Ⅵ heavy-duty vehicles were studied by using the portable emission measurement system(PEMS). Based on the emission factors of unit fuel consumption, unit mileage and unit time, the variations of NO_x, HC and CO pollutants with road conditions was analyzed. The results showed that the gaseous pollutants of NO_x, HC and CO had a larger decline than the China V heavy duty diesel vehicle, and they decreased by 88%, 98% and 62.7%, respectively. Data collation and analysis with the method of power base window indicated that the measurement results of NO_x, CO and HC were 460 mg·(kWh)~(-1), 192 mg·(kWh)~(-1) and 37.5 mg·(kWh)~(-1), the heavy diesel vehicle can meet the requirements of the China Ⅵ vehicle regulations. This study provides reference for the formulation of China Ⅵ vehicle emission standard and its applications in environmental pollution control field.
引文
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