摘要
为了研究发动机工作环境对发动机本体热负荷的影响,以某型发动机为对象,采用缸内燃烧与冷却系统传热耦合计算方法,建立了温度和大气压力对发动机本体部件热负荷数值仿真模型。通过发动机热平衡台架试验验证了模型最大误差为9.1%,实车试验验证模型最大误差为6.2%。计算表明:发动机出口冷却水温度随环境温度和海拔升高而升高;环境温度46℃时的缸内活塞最高温度比-43℃时升高了15.4%,汽缸套最高温度升高15.5%;海拔高度每升高1 km,活塞最高温度升高1.04%,汽缸套温度升高0.95%。
In order to research the working environment influence on the components of the engine cylinder heat load,based on a certain engine,the temperature and atmospheric pressure around the cylinder on the engine parts heat load values simulation model is established with the cylinder combustion and cooling system with heat transfer coupling methods of calculating.Then through verification the engine heat balance test bench,the mode maximum error is 9.1%,and the model maximum error is 6.2% throngh real velicle te...
出处
《装甲兵工程学院学报》
2010年第6期32-37,共6页
Journal of Academy of Armored Force Engineering
基金
军队科研计划项目
关键词
环境
发动机
缸内部件
热负荷
environment
engine
cylinder parts
heat load
