不同技术类型车辆国Ⅵ标准适应性研究  

Research on the Adaptability of Different Technical Types of Vehicles to the China VI Regulation Standard

作　　者：闫峰[1] 赵伟[1] 王玉伟[1] 戴春蓓[1] 汪晓伟 Yan Feng;Zhao Wei;Wang Yuwei;Dai Chunbei;Wang Xiaowei(China Automotive Technology&Research Center Co.,Ltd.(Tianjin,300300,China)

机构地区：[1]中国汽车技术研究中心有限公司

出　　处：《小型内燃机与车辆技术》2019年第5期56-60,共5页Small Internal Combustion Engine and Vehicle Technique

基　　金：国家重点研发计划项目(2017YFC0211005)

摘　　要：针对包含6种不同技术类型车辆的试验车队,进行了国Ⅵ标准适应性研究。通过分析不同技术类型车辆在实验室工况和真实路况下的排放,提出了能兼顾排放和油耗的技术方案。结果表明,车队在实验室工况下排放性能良好,即便考虑劣化,NOx和PN排放依旧在国6b限值之内,但有72.3%的车辆在实际行驶时的NOx排放和PN排放同时高于实验室工况下的NOx排放和PN排放。在RDE测试中,被测车辆的NOx排放均满足限值要求,但PN排放出现不同程度的超标。PN排放超标主要集中在不带GPF的GDI车辆上,超标率为50%。而装载GPF的车辆,即便符合性因子(CF)由2.1降低到1.0,超标率依旧为0。此外,研究发现,GDI车辆在单位功率下驱动单位质量时的油耗总体上低于进气道直喷(PFI)车辆。由于较低的排放和油耗,GDI带GPF的车辆具备兼顾越来越严格的排放和油耗标准要求的潜力。A fleet contained 6 different technical types of vehicles were organized,and the adaptability of the fleet under China VI standard was studied.By analyzing the performance of the vehicles tested in laboratory and in real-world,the technical types that could simultaneously reconcile emission and fuel consumption performance were proposed.The results show that all vehicles are well performed under laboratory conditions,but in real-world conditions,50%direct injection vehicles without GPF would fail the RDE test.Better performance occurred in vehicles equipped with GPF,all of which passed the RDE tests even if the CF factor decreased from 2.1 to 1.In addition,it is found that the fuel consumption of the DI vehicle were lower than that of the PFI vehicle,and the DI vehicle with GPF shows better performance on the balance of emission and fuel consumption,which have more potentials to deal with the increasingly stringent emission and fuel consumption standards at the same time.

关 键 词：不同技术类型车辆 国Ⅵ标准 污染物排放 

分 类 号：U467.1[机械工程—车辆工程]