一种用于空调的发动机电控硅油风扇控制原理

Control Principle of An Electric Silicon Oil Fan for A/C Engine

电控硅油风扇是发动机的一项节油技术,现阶段在载货汽车上应用逐渐广泛。此种硅油风扇在发动机怠速时,转速较低,在水温升高到一定条件后,风扇转速开始提升,从而实现低速节能。空调冷凝器作为前端模块与水箱集成,车辆怠速时,空调冷凝器散热主要依靠硅油风扇,此时低速风扇提供的风量不能保证冷凝器散热效果,从而导致空调制冷效果差。本文通过硅油风扇工作原理分析,从控制上解决空调怠速效果差的问题。

The electric silicon oil fan is a fuel saving technology of engine and now gradually used in trucks. This fan rotates in low speed when the engine is at idle speed, and its speed begins to raise when the water temperature raises to a certain condition, so as to save energy in low speed. But the air volume the fan provides in low speed can not ensure the cooling effect of condenser, which leads to poor A/C refrigeration effect. The working principle of this fan is analyzed here to solve this refrigeration problem from the aspect of its control.