%0 Journal Article
%T VSP-Bin division for light-duty vehicles oriented to carbon dioxide<br>针对二氧化碳的轻型汽油车VSP区间划分
%A XU Yaofang
%A YU Lei
%A SONG Guohua
%A HAO Yanzhao
%A <br>胥耀方
%A 于雷
%A 宋国华
%A 郝艳召
%J 环境科学学报
%D 2010
%I 
%X Emission data collected from sixteen light duty vehicles in Beijing using a Portable Emission Measurement System (PEMS) were used to analyze the characteristics of impacts of Vehicle Specific Power (VSP) on CO2 emissions. Then, the VSP bins were re-divided based on the emission characteristics of CO2 with a consideration of both emission rates and emission contributions. The minimum value of the emission rate in the new VSP bins was 0.5587 g.s-1, and the maximum value was 3.4013 g.s-1; while the minimum value of the emission contribution in the new VSP bins was 4.61%, and the maximum value was 14.17%. The emission rate when VSP=0 was 0.5587 g.s-1, lower than those of neighboring bins, while the emission contribution was 14.17%, similar to those of other bins. Thus, VSP=0 was made an independent bin. Speed and Engine Stress (ES) were used separately to further divide the VSP-bins into 30 bins. Finally, the prediction of CO2 using the proposed VSP bins was validated in a case study for different classes of roads in Beijing. For expressways and non-expressways, the errors generated were 11.43% and 14.34% by MOVES, 12.23% and 15.53 by IVE, 10.05% and 12.57% by the proposed VSP-Bins, 9.10% and 11.56% by the proposed VSP-Speed-Bins, and 9.90% and 12.23% by the proposed VSP-Engine Stress-Bins. It is shown that the combination of VSP and speed generated the least errors in analyzing the CO2 emissions of on-road vehicles.
%K Carbon dioxide
%K emission characteristics
%K VSP-Bins
%K PEMS
%K Beijing<br>二氧化碳
%K 排放特性
%K VSP区间
%K 车载测试
%K 北京
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=A7CA601309F5FED03C078BCE383971DC&jid=03A55E61A8750ACAC6AF81EF9E2AC838&aid=CC1F1DFAFA0359C3F1A1F6F76FEC0999&yid=140ECF96957D60B2&vid=340AC2BF8E7AB4FD&iid=DF92D298D3FF1E6E&sid=FD56DFE2BC7CF81F&eid=995E04834DE9F169&journal_id=0253-2468&journal_name=环境科学学报&referenced_num=0&reference_num=25