Cooling fan is one of the important parts of the engine's cooling system, and its performances have important influence on the engine performances.

风扇是发动机冷却系统的重要部件之一，其性能好坏直接关系到发动机能否正常运转。

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A water-cooling system consists of the engine water jacket, thermostat, water pump, radiator, radiator cap, fan, fan drive belt and necessary hoses.

水冷系统由发动机水套、节温器、水泵、散热器(水箱)、散热器盖、风扇、风扇驱动皮带和必要的软管组成。

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The driven force of fan and pump in the traditional way of the cooling system in cereal combining harvesters comes from crankshaft of the engine by decided transmission ratio.

谷物联合收获机传统的冷却方式是由发动机曲轴以定传动比形式驱动冷却风扇和水泵运转的，这种冷却方式经常出现低速大负荷时冷却不足、高速小负荷时冷却过度等问题。

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