汽车经济型巡航的车速规划方法  

Speed Planning Method of Vehicles in Economical Cruise State

作　　者：张立斌[1] 刘焕峰[1] 单洪颖[2] 杨玉林[1,3] 

机构地区：[1]吉林大学交通学院,吉林长春130022 [2]吉林大学机械科学与工程学院,吉林长春130022 [3]华晨汽车工程研究院,辽宁沈阳110000

出　　处：《华南理工大学学报（自然科学版）》2017年第4期103-111,共9页Journal of South China University of Technology(Natural Science Edition)

基　　金：国家自然科学基金资助项目(50775094);吉林省科技发展计划项目(20150204025GX)~~

摘　　要：为提升高速公路汽车自适应巡航时的燃油经济性,建立了一种经济型巡航车速规划模型.根据汽车巡航时的道路条件及气候环境参数等信息,规划汽车的经济型巡航车速.首先构筑试验环境进行遍历试验,建立汽车百公里燃油消耗量数据库;然后采用云模型相关理论建立运行车速和行驶阻力与燃油消耗量之间的映射关系,预测出不同行驶阻力条件下的经济车速;最后根据这些经济车速规划出经济型巡航速度的变化轨迹.经试验验证,按照经济型巡航速度变化轨迹行驶的燃油消耗比自动巡航状态下的明显降低,提高了汽车的燃油经济性.In order to improve the fuel economy of expressway running vehicles in adaptive cruise state, a speed planning model of vehicles in economical cruise is established. The model plans vehicle’s economical cruising speed according to road conditions and climate environment parameters, First of all a test environment is construc-ted to perform a traverse test, and a database of fuel consumption per hundred kilometers is established. Then, in order to predict the economical speed under different driving resistances, the mapping relationship between running speed as well as running resistance and fuel consumption is revealed based on the related theory of cloud model. Fi-nally, the speed change trajectory in economical cruise state is planned according to the economical vehicle speed. Test results show that the fuel consumption of the vehicle along the economical cruising speed change trajectory re-duces significantly and fuel economy is effectively improved.

关 键 词：汽车巡航 燃油经济性 云模型 车速规划 

分 类 号：U463[机械工程—车辆工程]