The service life of the filter is basically expressed in kilometers: such as 5,000 kilometers for oil filters and 10,000 kilometers for air filters. In fact, these are relative, and the number of kilometers recommended by the manufacturer is only a relative value. It refers to the analog quantity when testing with standard dust under simulated laboratory conditions. If the life of the filter is expressed as an absolute value, it is the dust holding capacity or dust holding capacity of the filter. In automobile filters, whether it is oil filters, air filters, fuel filters, and air-conditioning filters, paper is basically used as the filter medium.
All filters are used to protect engine parts, clean up, extend the service life of the engine, from the surface of various filters and the length of time the filter is used, it is not correct to determine the quality of the filter, and the filter is truly judged The quality is good or bad, first of all, the following aspects should be considered:
1. Quality of filter paper
Good quality filter paper and poor quality filter paper are almost the same on the surface. Only the inspection with professional inspection equipment can make a significant difference. The quality of filter paper is related to the efficiency of the filter, and the filter paper of good quality is filtered. There are more impurities, iron, and dust in the system. Poor quality filter paper filters fewer impurities, iron, and dust, which can’t provide protection, and the related parts of the engine are easy to wear. The thickness of the filter paper used in the big brand filters is between 0.5-0.8mm, and the three-dimensional structure of the filter paper can be seen in the microscopic state. Paper fiber only occupies 10%-15% of the volume space, and holes of different sizes make up the rest of the space, which we call accommodating holes. The container hole is used to contain dust. When the container hole is filled with dust and the pressure difference of the filter reaches the critical point of destruction, it will reach the end of its life. Therefore, an important factor that affects the life of the filter is the quality of the filter paper used, and whether the space-to-volume ratio of the filter paper pores meets the requirements, otherwise a large filter area will not have any effect. Secondly, the filter area of the filter paper is also an important factor. The high-quality filter paper greatly improves the filtration accuracy while prolonging the service life of the filter.
2. The filtration efficiency of the filter
It is mainly determined by the quality of the filter paper used in the filter. A filter with a filtration efficiency of more than 96% is considered a qualified product. The use of filters at the same time, at the same place, and from different manufacturers is different. The obvious difference is During engine starting and driving, the driver’s perception of the engine and the amount of smoke in the exhaust of the car, as well as the wear and tear of the engine parts during engine repair, are significantly different.
3. Adhesive material for filter paper and end cap
With good quality filter paper, there must also be good quality adhesives. If improperly selected, the filter paper in the filter will not adhere firmly to the upper and lower end caps, and the oil will easily fall off during use, and there will be no stickiness. Short circuit will not provide filtering effect.
4. Guarantee of production process
From the surface, there can be no adhesion between the filter paper and the filter paper, and the light transmission must be seen under the light. If the light transmission is not visible under the light, the adhesion between the filter papers will affect the flow of the entire air filter cake, and the lifespan will be short, resulting in insufficient power and power, and it is not easy to remove the dust during the cleaning process. A good air filter has no adhesion between the filter papers, has strong light transmittance, is suitable for engine air intake standards, has a long service life, and is easy to clean.
5. The process of air filter
Choose high-quality materials to produce filters, and the production process is the backing to ensure the quality of the products. There are many processes in the production of filters. How to ensure that the filters protect and purify during use, while ensuring the flow rate and ensuring the normal operation of the engine, requires process assurance in every aspect of the production process.
Post time: Jan-07-2022