发动机热平衡测试及影响因素研究  

An Experimental Study on Engine Heat Balance and Its Influencing Factors

作　　者：雍安姣[1] 付永宏[1] 张林波[1] 郭建峰[1] Yong Anjiao, Fu Yonghong, Zhang Linbo,Guo Jianfeng(Chery Automobile Co . , Ltd . , Wuhu 24100)

机构地区：[1]奇瑞汽车股份有限公司,芜湖241006

出　　处：《汽车工程》2018年第7期834-837,849,共5页Automotive Engineering

摘　　要：鉴于热平衡测试精度对于整车冷却系统的选型匹配至关重要,本文中从热平衡测试的误差机理分析入手,提出通过增大进出口温差来减小测试误差的措施,对现有台架进行改进设计,取得了良好的测试效果。在此基础上,研究了不同水温、不同进气温度和台架风机开启与否等关键因素对热平衡测试结果的影响。In view of the vital importance of the accuracy of heat balance test to the selection and matching of vehicle cooling system,a measure is proposed to increase the difference between outlet temperatures and inlet temperature for reducing test error based on an analysis on the error mechanism of heat balance test,and a modification design of existing test bench is conducted with good results achieved. On this basis,the effects of key factors such as different coolant temperatures,different inlet air temperatures and with or without test fan etc. on the results of heat balance test are also studied.

关 键 词：发动机 热平衡 测试精度 进气温度 

分 类 号：U467.3[机械工程—车辆工程]