The structure of an automotive filter is composed of multiple layers and materials, which are designed to efficiently filter impurities from the air, oil or fuel, ensuring the normal operation of the engine, transmission and air conditioning system. Different types of filters have different structural designs, but their basic structural principles are similar. The following is a structural analysis of the main types of automotive filters:
The air filter is a very important component in a car, mainly used to filter out impurities such as dust, sand particles and pollen in the air entering the engine.
Structural composition:
Housing
The casing is usually made of plastic or metal, and its function is to fix and protect the filter element, preventing external contaminants from entering the filter element area. The shell has an air inlet and an air outlet. Air enters the filter through the air inlet and is then filtered through the filter element.
Filter Media
The filter element is the core part of an air filter, usually made of materials such as paper filter material, synthetic fibers, foam or cotton. The design of the filter element is usually corrugated or folded to increase the surface area and provide better filtration effect.
Paper filter material: Mostly used in ordinary vehicle models, it has a high filtration efficiency and a relatively low cost.
Synthetic fibers: Mainly used in high-performance air filters, they have good durability and filtration efficiency.
Foam material: It is used in some specific air filters, especially those used in high-temperature and high-humidity environments.
Sealing Ring:
There will be a sealing ring at the edge of the filter, usually made of rubber, to ensure that the air can only pass through the filter element for filtration and will not bypass the filter element and directly enter the engine.
Support Frame:
Some high-efficiency filters are equipped with metal or plastic support frames for their filter elements to enhance their strength and prevent deformation under high pressure.
The oil filter is used to clean impurities in the engine oil, prevent contaminants from entering the engine, and keep the engine's lubrication system working properly.
Structural composition:
Housing
The casing is usually made of steel or other metal materials and is used to wrap the filter element and protect its internal structure. The casing is generally cylindrical and has a sealed joint, which is connected to the engine's oil circuit.
Filter Element
The filter element is the core part of the oil filter, mainly composed of multiple layers of filter paper, metal mesh and filter fibers. Filter paper is usually a high-strength paper material that has undergone special treatment to withstand high temperatures and pressures.
Paper filter element: A common filter element, mostly used in regular vehicles.
Synthetic fiber filter element: A high-performance filter element, typically used in high-performance engines, capable of filtering out finer impurities.
Bypass Valve
The return valve is a key part of the oil filter. When the filter element is contaminated to a certain extent, the oil flow will be restricted. The return valve will automatically open to allow the oil to flow around the filter element, preventing the oil flow from being too low and protecting the engine from damage.
Anti-Drainback Valve:
The safety valve is used to prevent the oil from flowing back to the filter element when the engine stops running. Without this valve, the engine oil might flow back to the oil pan due to gravity, resulting in the oil pump being unable to provide lubricating oil quickly when starting again.
Pressure Relief Valve
The function of the pressure regulating valve is to prevent the oil pressure from being too high. If the filter element is clogged, causing an increase in oil flow resistance, the pressure regulating valve will open to allow the oil to bypass the filter element, thereby preventing excessive oil pressure from damaging the engine.
The fuel filter is used to clean impurities and water in the fuel, ensuring that clean fuel is supplied to the engine and preventing damage to the fuel injection system and the engine.
Structural composition:
Housing
The housing of a fuel filter is generally made of metal materials and is usually cylindrical in shape, capable of withstanding the pressure of fuel.
Filter Media
Filter elements are generally made of paper, metal mesh, fiber materials or polymer materials. The common filter element design is composed of fiber materials to efficiently filter impurities in the fuel.
Paper filter elements: Commonly used in inexpensive fuel filters, suitable for most cars and commercial vehicles.
Stainless steel mesh filter element: Used in high-pressure fuel systems to enhance durability and compressive strength.
Drain Valve:
Some fuel filters are designed with drainage devices to discharge the water in the fuel and prevent it from entering the engine.
Inlet and Outlet Ports:
There are two oil ports on the housing of the filter, which are respectively used for the inlet and outlet of the fuel. They are connected to the fuel system through pipelines.
Sealing Gasket:
Rubber sealing rings are often used at both ends of the filter to ensure that the fuel only passes through the filter element and does not flow around it.
The air conditioning filter is used to clean the air inside the vehicle, filtering out harmful substances such as dust, pollen and bacteria in the air to ensure a healthy breathing environment for both the car owner and passengers.
Structural composition:
Housing
The housing of an air conditioning filter is usually made of plastic and is designed to match the intake pipe of the air conditioning system.
Filter Media
The main materials of the filter element include paper, synthetic fibers or activated carbon.
Paper filter element: Commonly found in ordinary air conditioning filters, it can effectively filter out dust and impurities in the air.
Activated carbon filter element: It can absorb odors in the air and improve the air quality inside the vehicle.
Sealing Strip:
The edge of the filter element usually has a sealing strip to prevent air from flowing around the filter element and ensure that the air is completely filtered through the filter element.
Summary## 标题文字 ##The structure of automotive filters varies by type, but most filters have basic components such as a housing, filter element, and sealing ring. The filter element is the core component. Its function is to ensure the cleanliness of the fluid or air by physically intercepting impurities, preventing them from entering the engine or other critical systems, thereby safeguarding the performance and lifespan of the vehicle.
Qinghe County Dongsen Auto Parts Co., Ltd. is located in Qinghe County, Xingtai City, Hebei Province. It was established in 2024. Although the company was established a short time ago, it has more than 10 years of production experience. We are a manufacturer specializing in the production of air filters, air conditioning filters and oil filters. The filters produced by our factory serve the domestic and foreign markets and have won unanimous praise from customers in Southeast Asia, Africa, South America and other regions.
