交通运输研究2024，Vol.10Issue(1)：45-57,81,14.DOI:10.16503/j.cnki.2095-9931.2024.01.006
车辆载重对重型货车碳排放的影响
Impact of Vehicle Load on Heavy-Duty Vehicle Carbon Emissions
摘要
Abstract
The existing issues that current transportation carbon emission models do not adequately consider the load variation characteristics of heavy-duty vehicles under real-world road conditions,and have not yet analyzed the impact of vehicle load on emissions from the perspective of microscopic emission rates,lead to the biggish uncertainty of carbon emission estimation.To address this issue,firstly,extensive data on the operational conditions and fuel consumption of heavy-duty trucks under real-world conditions were collected.A fuel consumption-based CO2 emission calculation model was used to calculate the CO2 emissions of heavy-duty trucks.Then,different categories of trucks were classified and discussed.An emission model based on VSP(Vehicle Specific Power)was used to study the impact of vehicle load on CO2 emissions,and a LC-VSP(Load-Considered VSP)emission model considering vehicle weight was established.A comparison was made between the LC-VSP model and the traditional mobile source emissions model MOVES(Motor Vehicle Emission Simulator Model)in terms of emission calculation errors.The results of the research indicate that load capacity has a significant impact on CO2 emission rates and VSP distribution of heavy-duty trucks,thus significantly affects the CO2 emission factors,as follows:①When VSP is in a small positive range,CO2 emission rates linearly increase with the increase of load;②In the same speed range,with the increase of load,the mean and variance of VSP distribution gradually decrease;③Under average operating conditions,the CO2 emission factors for fully loaded vehicles increase by approximately 24%to 113%compared to empty vehicles,depending on the vehicle type.When the vehicle speed is low(less than 20 km/h),the load has a significant impact on CO2 emission factors.The CO2 emission factor of fully loaded vehicles(49 t)is 2.8 times that of empty vehicles(18 t).However,as the speed increases,the impact of load on CO2 emission factors gradually diminishes;④Compared to emission models that do not consider the actual vehicle load,considering actual vehicle load can reduce CO2 estimation errors by 3%to 12%.It emphasizes the necessity of considering vehicle load in emission estimations,providing a certain theoretical basis for accurate emission modeling and assessment.关键词
碳排放/载重/比功率分布/重型货车/排放率/排放因子Key words
carbon emissions/vehicle load/VSP distribution/heavy-duty vehicle/emission rate/emission factor分类
交通工程引用本文复制引用
吴睿中,费文鹏,范鹏飞,宋国华..车辆载重对重型货车碳排放的影响[J].交通运输研究,2024,10(1):45-57,81,14.基金项目
国家自然科学基金项目(71871015 （）
71901018) （）
国家重点研发计划项目(2018YFB1600701) （2018YFB1600701）
