主办:陕西省汽车工程学会
ISSN 1671-7988  CN 61-1394/TH
创刊:1976年

汽车实用技术 ›› 2025, Vol. 50 ›› Issue (6): 94-98.DOI: 10.16638/j.cnki.1671-7988.2025.006.015

• 设计研究 • 上一篇    

某非道路发动机冷却系统 CFD 分析

李龙超 1,王会 2,葛锐 1*,辛雪军 1   

  1. 1.安徽康明斯动力有限公司;2.北京工业职业技术学院
  • 发布日期:2025-03-26
  • 通讯作者: 葛锐
  • 作者简介:李龙超(1979-),男,高级工程师,研究方向为内燃机先导技术 通信作者:葛锐(1984-),男,硕士,高级工程师,研究方向为内燃机新技术
  • 基金资助:
    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)

CFD Analysis of an Off-road Engine Cooling System

LI Longchao1 , WANG Hui2 , GE Rui1* , XIN Xuejun1   

  1. 1.Anhui Cummins Power Company Limited; 2.Beijing Polytechnic College
  • Published:2025-03-26
  • Contact: GE Rui

摘要: 发动机燃烧室温度一般可达 1 000~2 000℃,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。

关键词: 充气系数;散热能力;冷却系统;摩擦损失;燃烧温度

Abstract: The combustion chamber temperature of the engine can generally reach 1 000~2 000 ℃, 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.

Key words: inflation coefficient; heat dissipation capacity; cooling system; friction loss; combustion temperature