某非道路发动机冷却系统CFD分析  

CFD Analysis of an Off-road Engine Cooling System

作　　者：李龙超 王会[2] 葛锐 辛雪军 LI Longchao;WANG Hui;GE Rui;XIN Xuejun(Anhui Cummins Power Company Limited,Hefei 230601,China;Beijing Polytechnic College,Beijing 100042,China)

机构地区：[1]安徽康明斯动力有限公司,安徽合肥230601 [2]北京工业职业技术学院,北京100042

出　　处：《汽车实用技术》2025年第6期94-98,共5页Automobile Applied Technology

基　　金：吉林省产业技术研究与开发项目,基于润湿性主动控制的燃烧室壁面金属微纳米功能表面制备的关键技术(2020C025-2)。

摘　　要：发动机燃烧室温度一般可达1000~2000℃,冷却系统的作用是保障发动机在不同环境运行中都能保证温度平衡,一般控制在(85±2)℃。不适当的冷却不仅会出现过热、充气系数下降、燃烧异常以及动力性、经济性的全面恶化,也会出现机油、燃油稀释和摩擦损失加剧等问题。文章主要结合非道路设备开发过程存在的冷却系统匹配问题,开展流体动力学(CFD)仿真分析,并通过台架验证测试对存在问题进行设计优化,最终保证了冷却系统在非道路设备的成功应用。The combustion chamber temperature of the engine can generally reach 1000~2000℃,and the role of the cooling system is to ensure that the engine can ensure the temperature balance in different environments,and is generally controlled at(85±2)℃.Improper cooling will not only cause overheating,decrease of inflation coefficient,abnormal combustion,and overall deterioration of power and economy,but also cause problems such as oil,fuel dilution and increased friction loss.This paper mainly combined with the cooling system matching problems existing in the development process of non-road equipment,computational fluid dynamics(CFD)simulation analysis,and optimized the design of existing problems through bench verification test,and finally ensured the successful application of cooling system in non-road equipment.

关 键 词：充气系数 散热能力 冷却系统 摩擦损失 燃烧温度 

分 类 号：TK422[动力工程及工程热物理—动力机械及工程] U463[机械工程—车辆工程]