The engine needs two raw materials to work: gasoline and air. Gasoline is purchased by us, added to the fuel tank of the car, filtered through the fuel supply system, and then sent to the combustion chamber of the engine to mix and burn with air. And the air does not need to buy, just take it directly. How does the air enter the engine? Does it need to be filtered?

How does air enter the engine?

When the engine is working, it is divided into four strokes, one of which is the intake stroke. During this stroke, the engine piston descends, creating a vacuum in the intake manifold, drawing air into the combustion chamber of the engine, and mixing it with gasoline for combustion.

So, can the air around us be fed directly to the engine? The answer is no. We know that the engine is a very precise mechanical product, and the cleanliness of the raw materials is very strict. The air contains a certain amount of impurities, which will cause damage to the engine, so the air must be filtered. The air must be filtered before it enters the engine. This device is an air filter, commonly known as an air filter.

2. What is the function of the air filter?

The engine needs to inhale a large amount of air when it is working. If the air is not filtered, the dust suspended in the air will be sucked into the cylinder, accelerating the wear of the piston group and the cylinder, and larger particles will enter between the piston and the cylinder. Can cause serious "squeeze" phenomenon, especially in dry, sandy working environment. The air filter is installed in front of the carburetor or the intake pipe to filter the dust and sand in the air to ensure that the air entering the cylinder is sufficient and clean.

Among the thousands of parts of the car, the air filter is a very inconspicuous part, because it is not directly related to the technical performance of the car, but in the actual use of the car, the air filter is (especially The service life of the engine) has a great impact. On the one hand, if the air filter does not have a filtering effect, the engine will inhale a large amount of air containing dust and particles, causing serious wear to the engine cylinder; on the other hand, if the air filter is not maintained for a long time during use, the vacuum cleaner The filter element will be filled with dust in the air, which will not only reduce the filtering capacity, but also hinder air circulation, causing the mixture to be too thick and the engine to run abnormally. Therefore, regular maintenance of air filters is essential.

The air filter is the gas mask of the engine. It can filter out most of the impurities in the air and provide clean air for the engine. Therefore, its role is very large. In daily use, it must be cleaned frequently and replaced in time., Make sure the engine draws clean air.