What is the reason for dripping water under the front of the car?

The dripping water under the front of the car may be the drainage of the air conditioning system or the drainage hole is a normal phenomenon. Details are as follows: 1. Drainage of air conditioning system: The drainage of air conditioning system is normal in summer. There are three main reasons: (1) Because the temperature inside the car is high, it is necessary to start the cooling system to reduce the temperature inside the car. At this time, the moisture in the hot air in the car will condense on the surface of the heat absorption fin of the evaporator with extremely low temperature, and the water droplets will be collected by the plastic shell of the evaporator and discharged out of the car through the pipeline. (2) After the air conditioner is turned on, the moisture in the condensed air will drop on the ground outside the compressor installed in the machine room (low pressure area) (sometimes the water volume is greater than the displacement of the evaporator). (3) The low-pressure pipeline of automobile air conditioner is not covered with thermal insulation foam, so the surface of the pipeline is prone to condensation, and water droplets in the air will also condense and drop along the lowest point of the pipeline. The dripping position of the automobile air conditioning system is located in the right middle of the front of the car. Therefore, if the engine is turned off for a period of time after driving for a certain distance in summer, it is often found that the chassis in the right middle of the front of the car will drip. After a few minutes, a pool of clean and transparent water can be seen on the ground under the car. 2. Drain water through the drain hole: There is also a specially designed drain hole for draining the accumulated water on the car body to the outside of the car in rainy and snowy weather. These drainage holes include engine compartment drainage holes, skylight drainage holes and door drainage holes. (1) Engine compartment drain holes are usually located on both sides of the windshield wiper. On rainy days, the water in the skylight flows through here along the A-pillar air duct, and then merges with the water in the engine compartment and is discharged near the fender of the wheel. (2) The skylight drainage holes are generally located at the four corners of the roof skylight. After the rainwater enters the drainage hole, it will be discharged from the drainage outlet near the front and rear fenders under the vehicle along the conduit in the A-pillar. (3) The door drain hole is generally hidden under the door sealing strip at the bottom of the door panel, which mainly drains rainwater flowing into the door from the gap between the door and the window.