An engine needs two raw materials to work: gasoline and air. Gasoline is purchased by us and added to the fuel tank of the Excaavtor. After being filtered by the fuel supply system, it is sent to the engine combustion chamber and mixed with air for combustion. And the air does not need to be purchased, we just take it directly, so how does the air enter the engine? Does it need filtering too?
1. 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, which draws air into the engine combustion chamber to mix with gasoline for combustion.
So, can the air around us be directly supplied to the engine? The answer is no. We know that the engine is a very precise mechanical product, and the requirements for the cleanliness of the raw materials are very strict, and the air contains a certain amount of impurities, which will cause damage to the engine, so the air must be filtered before entering the engine, and the filtered air This device is the air filter, commonly known as the air filter.
2. What is the function of the air filter?
The engine takes in a large amount of air during operation. If the air is not filtered, the dust suspended in the air will be sucked into the cylinder, which will accelerate the wear of the piston group and the cylinder, and larger particles will enter between the piston and the cylinder. It will cause a serious "squeeze" phenomenon, which is especially serious in a dry and sandy working environment. The air filter is installed in front of the carburetor or the intake pipe to filter out dust and sand particles in the air to ensure sufficient and clean air entering the cylinder.
Among the tens of thousands of parts of the Machine, 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 very important to the car. (especially the engine) has a great impact on the service life. On the one hand, if there is no filtering effect of the air filter, the engine will inhale a large amount of air containing dust and particles, which will cause serious wear and tear on the engine cylinder; on the other hand, if it is not maintained for a long time during use, the air filter will The filter element of the cleaner will be full of dust in the air, which not only reduces the filtering ability, but also hinders the circulation of the air, causing the mixture to be too thick and the engine to work abnormally. Therefore, it is very important to maintain the air filter on schedule.
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 to the engine. Therefore, it plays a very important role. In daily use, it must be cleaned frequently and replaced in due course. , to ensure that the engine inhales clean air.
