根据冷却的实际需要自动调节风扇的转速，不仅可降低功率消耗、节省燃油，而且还可以达到降低噪声、延长发动机寿命等效果。

Automatically modulating the fan's rotational speed according to cooling requirement can not only reduce the power and fuel consumptions, but also reduce noise level and prolong the engine's lifetime.

youdao

根据冷却的实际需要自动调节风扇的转速，不仅可降低功率消耗、节省燃油，而且还可以达到降低噪声、延长发动机寿命等效果。

Automatically modulating the fan's rotational speed according to cooling requirement can not only reduce the power and fuel consumptions, but also reduce noise level and prolong the engine's lifetime.

youdao