This paper gives a performance test of a heavy truck cooling system in the laboratory of wind tunnel tests and by contras-ting the single variable, analyzes the details of the cooling system, such as the thermostat, the temperature, the air-conditioner and the fan. By the test, it also tries to find out the details of the cooling system which affect the cooling capacity of the whole truck. Meanwhile the test aims at to study the conditions of the experiment performed on the cooling system.%以某重型卡车作为试验对象,在风洞试验室进行冷却系统的性能测试,通过单一变量对比试验的方法,分析节温器、环境温度、空调和风扇等冷却系统匹配细节对整车冷却能力的影响,得到了冷却系统匹配分析试验应补充的试验条件与修正方法。
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