四缸柴油机冷却系统改进方案研究与分析  

Study and Analysis of L4 Diesel Engine Cooling System Improvement Options

作　　者：杨振东 张天 董家玮 胡栋亮 Yang Zhen-dong;Zhang Tian;Dong Jia-wei;Hu Dong-liang(Yunnan Communications Vocational and Technical College,Yunnan Kunming 650500;College of Mechanical Engineering,Guangxi University,Guangxi Nanning 530004)

机构地区：[1]云南交通职业技术学院,云南昆明650500 [2]广西大学机械工程学院,广西南宁530004

出　　处：《内燃机与配件》2025年第6期26-28,共3页Internal Combustion Engine & Parts

摘　　要：本文针对四缸柴油发动机冷却系统进行了试验研究,以期提升其在不同工况下的冷却性能。对欧五与欧六水泵分别进行了温度分布及冷却系统试验,并针对试验结果进行了更换机油模块的改进试验。研究发现,欧五水泵可以满足冷却系统温度要求,但散热器压损值超过设计值,需进一步优化。更换特殊机油模块后,可以适度降低压损值,但散热器压损问题依然存在。进一步试验中欧六水泵可以提高能效,但散热器压损值增加,且机体的最高金属温度超出设计限值,未能满足冷却要求。本文分析了试验样机当前存在的潜在问题,并在需要改进及优化的方向上进行了详细的试验分析,对同类型发动机冷却系统的改进设计具有重要的参考价值。In this study,the cooling system of the L4 diesel engine was tested to improve its cooling performance under different operating conditions.Temperature distribution and cooling system tests were carried out on Eu5 and Eu6 water pumps respectively,and an improvement test was carried out to replace the oil module in response to the test results.It is found that the Eu5 water pump can meet the cooling system temperature requirements,but the radiator pressure loss value exceeds the design value and needs further optimisation.After replacing the special oil module,the pressure loss value can be moderately reduced,but the radiator pressure loss problem still exists.Further testing of the Eu6 water pump improves energy efficiency,but the radiator pressure loss value increases and the maximum metal temperature of the body exceeds the design limit and fails to meet the cooling requirements.This study identifies the current potential problems of the test prototype and carries out a detailed experimental analysis in the direction of improvement and optimisation,which is an important reference value for the improved design of the cooling system of the same type of engine.

关 键 词：发动机 冷却系统 水泵 温度分布 散热器压损 

分 类 号：TK422[动力工程及工程热物理—动力机械及工程]