Why Does Water Drip from a Car's Exhaust Pipe?

[StKennedy]

Car exhaust pipes drip water because: after normal combustion, carbon dioxide and water vapor are produced. The water vapor condenses and transforms into liquid water. When the amount of water vapor reaches a certain level, it is expelled through the exhaust pipe. Some car manufacturers design the exhaust pipe with drainage holes. If you notice water dripping from the exhaust pipe forming clumps on the ground, or the exhaust appears as a milky white oil mist, this indicates abnormal dripping, and the owner should check the engine's coolant for any irregularities. The main working principle of a car's exhaust pipe is to use multiple channels to divert airflow, where the diverted streams rub and collide with each other, gradually reducing the airflow speed. This process repeats, allowing exhaust gases to flow out through the exhaust pipe while reducing noise.