What is the reason for the abnormal fan in Audi A4L?
1 Answers
Audi A4L fan abnormal reason: it is a relay failure. Relay: A relay is an automatic control device where the output changes abruptly when the input reaches a certain value. Relays have high load-switching power and excellent impact and vibration resistance. The power supply in cars is mostly 12V, and the coil voltage is generally designed to be 12V. Function of the fan: The function of the fan is to increase the air velocity through the radiator core, enhance cooling efficiency, and accelerate water cooling. The fans used in car engines are divided into axial-flow fans and centrifugal fans based on their structural principles; they are also categorized as mechanically driven and electrically driven based on their driving method. Modern car engines widely use electrically driven centrifugal fans.