基于行驶工况的货车动力传动系统优化.pdf

第33卷第4期
公路交通科技
2016年4
ournal of Highway and Transportation Research and Development
PT.2016
A
doi:10.3969/j.issn.1002-0268.2016.04.022
基于行驶工况的货车动力传动系统优化
黄粉莲,纪威2,申立中
(1.昆明理工大学云南省内燃机重点实验室,云南昆明650500;2.中国农业大学工学院,北京100083)
摘要:为改善行驶工况下轻型货车的燃油经济性和污染物排放,通过分析车辆循环百公里燃油消耗量、NOx和PM排
放对主减速比、变速器各档传动比变化的敏感性,提出一种基于敏感性系数确定指标权重系数的方法。以标准行驶
工况下车辆循环百公里燃油消耗量、NOx和PM排放为目标,对传动系统速比进行优化设计,确定了综合目标較优
的传动比组合。优化后综合百公里油耗降低0.1124%,NOx排放降低0.1587%,PM排放降低9.677%。研究结果
可为轻型货车性能预測及动力传动系统的匹配优化提供参考。
关键词:汽车工程;动力传动系统;优化;行驶工况;参数敏感性
中图分类号:U461
文献标识码
文章编号:1002-0268(2016)04-0142-07
Optimization of Truck Powertrain Based on Driving Condition
HUANG Fen-lian,I Wei, SHEN Li-zhong
(1. Yunnan Provincial Key I aboratory of Internal Combustion Engines, Kunming University of Science and Technology
Kunming Yunnan 650500 China; 2. School of Engineering, China Agricultural University, Beijing 100083, China
Abstract To improve the fuel economy and pollutant emission of light-duty truck under real driving
conditions, through the analysis of sensitivity of vehicle cycle fuel consumption per 100 km, NOX and PM
emissions to the changes of final drive ratio and the gear ratios of transmission, a method for determining the
weight coefficient of index based on sensitivity coefficients is put forward. Then, Laking the minimum fue
consumption, NOX and particulate matter emissions under standard driving cycle as the optimum objective
the Transmission ralio is optimized, and the optimal drive ratio combination is determined. Afler optimization
the cumulative fuel consumption per 100 km is reduced by 0. 112 4%, the NOX emissions by 0. 1587 and
the particulate matter emissions by 9.677%. The result of this study will provide a useful reference for the
design and optimization of powertrain system of light-duty trucks
Key words: automobile engineering; powertrain system; optimization; driving condition; parameter
sensitivity
污染物排放的评价标准和检测依据。行驶工况对
片运货车的污染物排放和燃油经济性影响很大,完
汽车动力传动系统参数及控制规律是影响汽车成不同循坏时发动机的工作区域和工作状况不同,
动力性、燃油经济性和排放性能最重要的因素,而燃烧和做功效率不同,导致燃油消耗和污染物的生
行驶工况是汽车动力传动系统优化设计的参考依成有较大差异4-5。基于行驶工况对动力传动系统
据?。行驶工况是车辆实际道路行驶状况的反映,进行优化设计,使车辆在实际运行过程中,较多地
是考察某类车辆在某一特定地区的能源消耗量以及工作于高效率区,对改善动力传动系统的匹配、提
收稿日期:2014-10-29
基金项目:国家科技支撑计划项目(2000BAG;13A(04)
作者简介:黄粉莲(1986-),女,広南昆明人,博士.(hfenlian(a126.com)