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时间:2020-05-01
《国Ⅳ柴油公交车在实际道路上的排放特征.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、第38卷第1O期北京工业大学学报Vo1.38NO.102012年10月JOURNALOFBEIJINGUNIVERSITYOFTECHNOLOGY0ct.2012国Ⅳ柴油公交车在实际道路上的排放特征樊守彬一,李钢,田刚,程水源(1.北京工业大学环境与能源工程学院,北京100124;2.北京市环境保护科学研究院大气污染防治研究所,北京100037)摘要:应用车载式尾气排放测试设备对北京国Ⅳ排放标准的柴油公交车在实际道路上的尾气排放特征进行实测研究,测试时间为10645S,行驶里程达51.3km,共获得10645组有效数据,测试数据能反映车辆在实际道
2、路上的排放特征.车辆在实际道路上尾气排放NO、CO、总碳氢化合物(totalcarburetedhydrogen,THC)和颗粒物(particulatematter,PM)的排放因子分别为(11.02±1.46)、(1.44±0.12)、(0.038±0.01)和(0.053±0.03)g/km.车辆的油耗、排放状况与车辆的行驶状态等因素有密切关系:车速越快,加速度越大,油耗速率越高;NO排放随工况点分布与油耗速率的分布趋势基本相似;CO排放速率在低速和减速工况下较低,车速超过30km/h及加速区域排放升高;THC高排放主要集中在车速低于30k
3、m/h的加速区域.关键词:柴油公交车;车载测试;排放因子;尾气排放中图分类号:X51文献标志码:A文章编号:0254—0037(2012)10—1565—05on.roadEmissionCharacteristicsof“ChinaIV”DieselBusFANShou—bin一,LIGang,TIANGang,CHENGShui—yuan(1.CollegeofEnvironmentalandEnergyEngineering,BeijingUniversityofTechnology,Beijing100124,China;2.Instit
4、uteforAtmosphericPollutionControl,BeijingMunicipalResearchAcademyofEnvironmentalProtection,Beijing100037,China)Abstract:Twotypicalin·usedieselbusesmeeting“China1V”emissionstandardwereselectedtodoon—roademissiontestsusingaportableemissionmeasurementsysteminBeijing.Theroaddista
5、nceoftestingwas51.3km,thetimeoftestingwas10645S,and10645datagroupswereobtainedofthebuses.Therunningcycleinthetestingcantypicallyreflecttherealon—roadrunningcycle.Theemissionfactorsofthetestedbusesare(11.02±1.46),(1.44±0.12),(0.038±0.01),and(0.053±0.03)g/kmforNO,CO,totalcarbur
6、etedhydrogen(THC),andparticulatematter(PM),respectively.Resultsshowthatfuelconsumptionandpollutantemissionarestronglyrelatedtothespeedandaccelerationinthedrivingcycles.Higherpollutantemissionratesandfuelconsumptionaretestedduringthehighspeedandaccelerationzoneinthedrivingcycl
7、es.HigherNOemissionratesaremainlyduringthehighspeedandaccelerationzone.HigherCOemissionratesaremainlyduringthevehiclespeedexceeding30km/horduringtheaccelerationzone.HigherTHCemissionratesweremainlyduringaccelerationzonewhilethevchiclespeedwasslowerthan30km/h.Keywords:dieselbu
8、s;on—vehicleemissiontest;emissionfactor;exhaustpipeemission近年来,北京市机动
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