Will the exhaust pipe drip when the air intake becomes smaller?

As we all know, because gasoline is a hydrocarbon organic compound, when gasoline burns with oxygen in the air, it will produce carbon dioxide. When the automobile engine is working, the exhaust pipe sometimes discharges a certain amount of water, especially in winter, which will make some car owners mistakenly think that the cooling system is poor and water leaks.

In fact, this is a very normal physical phenomenon, but also a full performance of gasoline combustion.

After gasoline is burned, it mainly produces carbon dioxide, water and a small amount of carbon monoxide. Every kilogram of gasoline mixed with air will produce about 1. 42 kilograms of water, mainly in the form of steam discharged into the atmosphere.

Because the general design is to put the main muffler at the rear of the car, and the temperature is relatively low, and it is basically a multi-chamber structure, which is very easy to form water. When the engine is running at high speed, the accumulated water inside will be discharged under the action of airflow, which is our common dripping phenomenon.

In addition, vehicles that often drive at low speed in congested sections, especially in winter, will have serious water accumulation in the muffler. If the sulfur content in fuel exceeds the standard, the engine will produce certain sulfur oxides after combustion, and these sulfur oxides will accumulate with water, which will easily lead to corrosion and perforation of muffler. When the car is parked uphill, the in-situ explosion of the throttle can effectively help the drainage of accumulated water and prolong the service life of the muffler.