道路坡度对轻型柴油车二氧化碳排放的影响  

Influence of road gradient on CO_(2)emission from light-duty diesel vehicles

作　　者：姜壁刚 何超[1,2] 王艳艳 李加强 刘学渊[1,2] JIANG Bigang;HE Chao;WANG Yanyan;LI Jiaqiang;LIU Xueyuan(School of Machinery and Transportation,Southwest Forestry University,Kunming,Yunnan 650224,China;Key Laboratory of Motor Vehicle Environmental Protection and Safety in Plateau Mountainous Areas of Yunnan Province,Kunming,Yunnan 650224,China;CNR Automobile Inspection Center(Kunming)Co.,Ltd.,Kunming,Yunnan 651700,China)

机构地区：[1]西南林业大学机械与交通学院,云南昆明650224 [2]云南省高校高原山区机动车环保与安全重点实验室,云南昆明650224 [3]中汽研汽车检验中心(昆明)有限公司,云南昆明651700

出　　处：《公路交通科技》2025年第2期207-214,共8页Journal of Highway and Transportation Research and Development

基　　金：国家自然科学基金项目(51968065);国家留学基金委项目(201908530347);云南省高层次人才项目(YNWR-QNBJ-2018-066,YNQR-CYRC-2019-001);云南省教育厅科学研究基金项目(2020J0418)。

摘　　要：【目标】深入探究高原山区道路坡度对轻型柴油车CO_(2)排放的具体影响。【方法】采用了GPS和GIS技术精确收集道路信息并计算坡度,结合坡度、车速及加速度数据计算得出车辆的比功率(VSP),通过使用车载排放测试系统收集车辆CO_(2)排放数据。基于某型号轻型柴油车在实际道路上的行驶和CO_(2)排放数据,首先分析了坡度对车辆运动状态和VSP的影响;其次对VSP进行了细致的Bin区间划分,探讨了不同加速度下VSP与CO_(2)排放速率的关系;其次分析了不同运动状态下的VSP与CO_(2)排放的关系。然后利用MOVES模型仿真结果与实际数据,对比分析不同坡度和车速下对CO_(2)排放速率和CO_(2)排放因子的影响;最后分析了同一坡度的绝对值上下坡综合CO_(2)排放因子与平路排放差异。【结果】在坡度介于―6%~+6%的范围内,VSP与CO_(2)排放速率呈现正相关,VSP值在坡度+4%时达到峰值;同时,CO_(2)排放速率和排放因子均与坡度呈线性关系,车速也对排放因子有显著影响。【应用】通过MOVES模型仿真验证了试验结果的准确性,最终提出道路坡度小于4%的建议,以期减少轻型柴油车的CO_(2)排放。这一建议对于推动绿色交通发展、实现碳中和目标具有重要意义。[Objective]To deeply investigate the specific influence of road gradient in plateau mountainous areas on CO_(2)emission from light-duty diesel vehicles.[Method]this paper employed GPS and GIS technologies to accurately collect the road information,and calculate the road gradients.By combining the gradient,vehicle speed,and acceleration data,the vehicle specific power(VSP)was calculated.The portable emission measurement system was used to collect CO_(2)emission data from vehicles.Based on the driving and CO_(2)emission data of a certain model of light-duty diesel vehicle on actual roads,the influences of gradient on vehicle motion state and VSP were first analyzed.Second,a detailed Bin interval division on VSP was conducted to explore the relation between VSP and CO_(2)emission rate with different accelerations.Third,the relation between VSP and CO_(2)emissions at different motion states was analyzed.Then,by using MOVES model simulation results and the actual data,the influences of different gradients and vehicle speeds on CO_(2)emission rate and CO_(2)emission factors were comparatively analyzed.Finally,the comprehensive CO_(2)emission factor differences between uphill-downhill with same absolute gradient values and flat road were analyzed.[Result]Within the gradient range from―6%to 6%,VSP positively correlates with CO_(2)emission rate.The VSP value peaks at the gradient of 4%.Additionally,both CO_(2)emission rate and emission factor exhibit a linear relation with gradient.The vehicle speed also has the significant influence on emission factors.[Application]The test result accuracy is verified with MOVES model simulation.Ultimately,this paper proposes a recommendation for road gradient to be less than 4%,in order to reduce CO_(2)emissions from light-duty diesel vehicles.This recommendation holds significant importance for promoting the green transportation development and achieving the carbon neutrality goals.

关 键 词：汽车工程 柴油车 MOVES模型 二氧化碳 道路坡度 

分 类 号：U467.11[机械工程—车辆工程] X734.2[交通运输工程—载运工具运用工程]