摘要
以某型车用柴油机为研究对象,基于GT-suite仿真软件建立柴油机冷却系统仿真模型,通过柴油机高海拔热平衡性能模拟试验,验证该模型的准确性。利用该模型,改变其边界条件,分析不同海拔高度对柴油机冷却系统性能的影响。结果表明:5 000 m海拔与0 m海拔相比,在标定工况点,柴油机出口水温升高7℃,散热器出口水温升高15℃,大循环水流量上升1.22 L/s,流经散热器的空气质量流量平均降幅为56%,散热器的散热量平均减小3.8 k W。
A certain automobile diesel engine was taken as the study object. A simulation model of its cooling system was built via GT - suite software, which was verified through a diesel engine thermal balance performance test at high altitude. It showed the simulation model had fine computation accuracy. By changing the boundary condition of the model, the effects on performance of diesel engine~ cooling system at different altitudes were analyzed. The results showed： compared with 0m altitude, the diesel outlet water temperature at 5000m altitude at declared working condition rose 7℃, radiator out- let water temperature rose 15℃, water flow rate of major cycle rose 1.22 L/s , air mass flowing through the radiator decreased 56% on average, and heat dissipating quantity of radiator decreased 3.8KW on average.
出处
《军事交通学院学报》
2014年第9期26-30,共5页
Journal of Military Transportation University
基金
军队科研计划资助项目
关键词
海拔高度
柴油机
冷却系统
热平衡
altitude
diesel engine
cooling system
thermal balance
作者简介
刘瑞林（1963-），男，博士，教授，博士研究生导师．
