摘要
为了便于进行汽车动力源系统的参数选择和设计,在试验数据的基础上运用曲面拟合和二维插值的方法,通过模拟计算绘制了液压泵的特性等值曲线;综合发动机和液压泵的特性曲线,分别对发动机与液压变量泵、定量泵进行了匹配效率分析;考虑蓄能器的效率,建立了发动机与液压泵、蓄能器的效率数学模型以及效率脉谱图,定义了系统效率概念并以此评价动力源系统的经济性,得出了发动机与变量泵、定量泵匹配的效率关系以及动力源系统的最佳工作范围。
In order to select and design parameters of power source system, based on experimental data, a method which uses the theory of curved surface fitting method and two dimension interpolation to make isogams in hydraulic pump was applied. Through a study in characteristic curve of the engine and hydraulic pump, the matching efficiencies between engine and fixed and hydraulic variable displacement pump were analyzed respectively. The mathematical models and efficiency map of engine and hydraulic pump and accumulator were set up together considering the efficiency of accumulator. The economy was evaluated via efficiency of the engine-pump system and the operation range was gained in order to achieve optimal economy and high efficient matching between engine and fixed and variable displacement pump.
出处
《中国公路学报》
EI
CAS
CSCD
北大核心
2007年第1期118-122,共5页
China Journal of Highway and Transport
基金
湖南省教育厅基金项目(05C338)
关键词
汽车工程
动力源系统
仿真分析
匹配效率
静液压传动
发动机
液压泵
automotive engineering
power source system
simulation analysis
matching efficiency
hydrostatic drive
motor
hydraulic pump
