施佳能¹，李粟²，张佑源^1*，汪晓伟²，高涛²

1.东风柳州汽车有限公司，广西 柳州 545500；

2.中汽研汽车检验中心（天津）有限公司，天津 300300

摘要：为研究中国重型商用车辆循环（Chinese version world transient vehicle cycle，C-WTVC）和中国重型商用车辆行驶工况（China heavy-duty commercial vehicle test cycle,CHTC）的异同以及对应的碳排放特性，分析欧盟重型车碳排放标准中的整车能量消耗计算工具VECTO软件的测试参数及流程，利用VECTO软件计算半挂牵引车、重型货车、城市客车和客车在C-WTVC和CHTC下的碳排放。结果表明：与C-WTVC相比，城市客车、客车、重型货车和半挂牵引车在CHTC下的碳排放均增加，其中城市客车和客车的增加幅度较大，分别为19.09%、19.03%；半挂牵引车增加幅度较小，为5.23%；重型货车增加幅度最小低，为1.51%；重型车碳排放随汽车加速度增加而上升，且随着车辆总质量的增加，碳排放增加趋势更明显。该研究可为商用车企业应对下一阶段油耗标准工况的切换要求提供参考。

关键词：重型商用车；VECTO软件；C-WTVC；CHTC；碳排放

Abstract：In order to compare and analyze the similarities and differences between Chinese version world transient vehicle cycle (C-WTVC) and China heavy-duty commercial vehicle test cycle (CHTC) and the corresponding CO₂ emission characteristics, the test parameters and process of VECTO software, a vehicle energy consumption calculation tool in EU heavy duty vehicle carbon emission standard, are analyzed. The CO₂ emission under the C-WTVC and CHTC are calculated by VECTO for vehicles including city bus, coach, heavy truck and semi-trailer tractor, to compare and analyze the differences of both test cycles and the corresponding carbon emission characteristics. The results show that, compared with C-WTVC, the CO₂ emissions of these four types of vehicles all increase under CHTC. City bus and coach have the highest increase of 19.09% and 19.03%, respectively. Semi-trailer tractor shows a lower increase of 5.23%, and heavy truck vehicle has the lowest increase of 1.51%. Heavy-duty vehicle CO₂ emission rises with the increases of vehicle acceleration, and the upward trend becomes more pronounced as the total mass increases.This research can provide a reference for commercial vehicle companies to meet the requirements of the next stage of fuel consumption standards.

Keywords: heavy-duty commercial vehicle; VECTO software; C-WTVC; CHTC; CO₂ emission