What are the three filters in a car?
2 Answers
Automotive three filters refer to the air filter, fuel filter, and oil filter. The "three filters" play a filtration role for air, oil, and gasoline in the car engine, thereby protecting the engine. 1. Air filter: Ensures the air entering the engine is clean. There is a lot of dust suspended in the air, mainly composed of silicon dioxide, which is a substance harder than metal. Installing an air filter can reduce the wear of parts such as cylinders, pistons, and piston rings. If not installed, cylinder wear will increase by 7 times, piston wear by 3 times, and piston ring wear by 8 times. Therefore, modern car engines are equipped with air filters at the carburetor (or the intake control device of fuel injection engines). 2. Fuel filter: Ensures the cleanliness of fuel and prevents vapor lock. During storage, transportation, and refueling, gasoline inevitably mixes with some impurities and water. These impurities, along with the fuel, enter the fuel supply system and engine cylinders, accelerating cylinder wear. Before gasoline enters the fuel pump, it must be filtered to ensure the normal operation of the fuel supply system. 3. Oil filter: Filters the oil to ensure the normal operation of the engine, and is the most important among the three filters. During the use of internal combustion engines, mechanical impurities such as dust, metal shavings, and carbon will continuously mix into the oil. At the same time, the oxidation of oil by air and combustion exhaust gases will gradually produce gum. The mixture of mechanical impurities and gum will form sludge, which not only accelerates the wear of moving parts but also easily causes oil passage blockage. To ensure the cleanliness of the oil, the engine is equipped with an oil filter in the lubrication system.
The three filters in a car refer to the air filter, oil filter, and fuel filter. In my daily car maintenance, these components are particularly important. The air filter prevents dust and impurities from entering the engine, avoiding internal wear. I usually replace it every six months or 10,000 kilometers, and it's a simple DIY task that saves money. The oil filter is changed along with the engine oil, removing contaminants from the old oil to protect the engine's lubrication system. The fuel filter filters out particles in the gasoline, preventing fuel line clogs that could lead to reduced power. I often replace it every 20,000 kilometers. Neglecting any of these can increase fuel consumption or even lead to major repairs, so I've developed a habit of checking them regularly.
