农业机械学报2013，Vol.44Issue(7)：17-22,6.DOI:10.6041/j.issn.1000-1298.2013.07.004
高原环境车用柴油机与辅助系统耦合仿真
Coupled Simulation on Vehicle Diesel Engine and Auxiliary System in Plateau Environment
摘要
Abstract
Diesel engine quasi-dimensional model were corrected by test in plateau.The full-coupled working process simulation model with variable altitude adaptation on certain heavy-duty vehicle propulsion (diesel engine and auxiliary system) was set up.According to the quasi steady state flow uniformity resistance and heat transfer equations,air intaken system resistance model were established.Based on 1-D unsteady compressible fluid dynamics theory and heat transfer theory,the working model of fuel injection system was erected.Considering the effect of lubricating oil on heat transfer,the engine cooling system model was established.Auxiliary system model and the working process of the engine were coupled,that means,the boundary conditions was two-way delivered.Simulation model were verified by experiment.The results show that the power reduces by 45％ and fuel consumption increases by 71％ at maximum at 4 500 m altitude under external characteristic working condition.The heat quantity of cooling liquid in heat-flux distribution increases by 48.6％.The temperature field of piston-cylinder sleevecylinder head raises apparently,the peak temperature increases by 85 ～ 91 K.The delivery lift of water pump drops by 3.9 m at most at 3 700 m altitude.When the water flow grows up,the thermal load of cooling system raises.关键词
高原环境/动力装置/工作过程/全耦合仿真Key words
Plateau environment/Vehicle propulsion/Working process/Full-coupled simulation分类
能源科技引用本文复制引用
郭猛超,王宪成,袁善勇,张晶,孙志新..高原环境车用柴油机与辅助系统耦合仿真[J].农业机械学报,2013,44(7):17-22,6.基金项目
军队科研项目(2010WG02、2011CJ016) （2010WG02、2011CJ016）
