海拔高度对电磁风扇离合器工作特性影响的试验研究  

Research for Effects of Altitude on Working Characteristic of Electromagnetic Fan Clutch

作　　者：安相璧[1] 刘瑞林[2] 孙武全[2] 赵传利[2] 王大玮[2] 周广猛[2] 

机构地区：[1]天津大学 [2]天津军事交通学院

出　　处：《汽车技术》2007年第1期28-30,40,共4页Automobile Technology

摘　　要：在自行研制的内燃机高海拔模拟试验台上,研究了不同海拔高度对电磁风扇离合器的分离特性、接合特性及发动机暖机特性的影响。分析结果表明,当工作温度为81.5～72.5℃时,温控电磁风扇离合器能够适应海拔高度为5000m的高原环境;随着海拔高度升高,在暖机过程中,电磁风扇离合器的分离时间变短、接合时间变长,发动机有效功率和风扇转速降低、燃油消耗率增加。Appl the internal-combustion engine high altitude simulation test bed to research the effects of different altitude on the separating and combining characteristic of electromagnetic fan clutch and on warm-up characteristic of engine.The analysis results show that the electromagnetic fan clutch is suitable for usage at high altitude of 5000 m with its working temperature between 81.5℃-72.5℃,with the increase of altitude and in the course of warm-up of engine,the separating time of electromagnetic fan clutch is decreased and the combining time is increased,the effective engine power and fan speed are decreased,the fuel consumption is increased.

关 键 词：海拔高度 模拟试验台 电磁风扇离合器 工作特性 

分 类 号：U467.13[机械工程—车辆工程]