不同测试循环下的国六轻型车排放油耗特性研究  

Study on Exhaust Emission and Fuel Consumption Characteristics of China 6 Light Duty Vehicles under Different Testing Cycles

作　　者：耿培林 戴春蓓[1] 刘乐[1] 王力辉 邹雄辉 Geng Peilin;Dai Chunbei;Liu Le;Wang Lihui;Zou Xionghui(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,天津300300

出　　处：《小型内燃机与车辆技术》2020年第3期16-21,共6页Small Internal Combustion Engine and Vehicle Technique

基　　金：科技部大气污染成因控制技术专项(2017YFC0211004和2018YFB0106401)。

摘　　要：以具有相同排放控制技术的国六轻型汽车为研究对象,选取了3辆不同发动机排放的车辆,研究了在NEDC、WLTC和CLTC 3种测试循环下的国六轻型车的排放和油耗特性。研究结果表明,相对于NEDC和CLTC循环,WLTC循环下的CO、THC和NO_x排放量最小;随着发动机排量的减小,不同循环间的CO和THC排放差异增加,说明小排量发动机车辆的CO和THC受循环工况影响较大;WLTC循环下的PN排放相对较多,但3种测试循环下的PN排放量相差不大;WLTC循环下的油耗最小,且随着发动机排量的减小,3种循环间的油耗差异减少,说明了大排量发动机车辆的油耗受循环工况的影响较大。This paper focuses on China 6 light duty vehicles with the same emission control technology as the research object and selects three vehicles with different engine displacements,and studies the emission and fuel consumption characteristics of China 6 light duty vehicles under three test cycles of NEDC,WLTC and CLTC. The results show that,under WLTC cycle,CO,THC and NO_x emissions are the minimum compared with the NEDC and CLTC cycles. With the decrease of the engine displacement,the differences of CO and THC emissions increase with different cycles,which shows small displacement engine vehicles are greatly influenced by driving cycles. Compared with other testing conditions,the WLTC cycle emits more PN,however there is not much difference between the three testing cycles. The fuel consumption under the WLTC cycle is the smallest,and the fuel consumption difference among the three testing cycles decreases with the reduction of engine displacement,indicating that the fuel consumption of vehicles with large displacement engines is greatly affected by the cycle conditions.

关 键 词：测试循环 轻型车 排放 油耗 

分 类 号：U467.12[机械工程—车辆工程]