基于行驶工况的货车动力传动系统优化  

Optimization of Truck Powertrain Based on Driving Condition

作　　者：黄粉莲[1] 纪威[2] 申立中[1] 

机构地区：[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

出　　处：《公路交通科技》2016年第4期142-148,共7页Journal of Highway and Transportation Research and Development

基　　金：国家科技支撑计划项目(2009BAG13A04)

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,确定了综合目标较优的传动比组合。优化后综合百公里油耗降低0.112 4%,NOx排放降低0.158 7%,PM排放降低9.677%。研究结果可为轻型货车性能预测及动力传动系统的匹配优化提供参考。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,taking the minimum fuel consumption,NOx and particulate matter emissions under standard driving cycle as the optimum objective,the transmission ratio is optimized,and the optimal drive ratio combination is determined. After optimization,the cumulative fuel consumption per 100 km is reduced by 0. 112 4%,the NOx emissions by 0. 158 7% 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.

关 键 词：汽车工程 动力传动系统 优化 行驶工况 参数敏感性 

分 类 号：U461.2[机械工程—车辆工程]