I. Necessity of Oil Filter
When the engine works, the metal debris produced on the friction surface of the parts, the dust in the atmosphere, and the carbon particles produced by incomplete combustion of the fuel will infiltrate into the oil. The oil itself will also produce colloidal precipitates due to thermal oxidation, and these impurities will be mixed in the oil.
If such dirty oil is sent directly to the surface of the moving parts, the mechanical impurities in the oil will become abrasives, accelerate the wear of the parts, and cause the blockage of the oil passage and the cementation of the piston rings, valves and other parts.
Therefore, an oil filter must be installed in the lubrication system so that the circulating oil can be purified before being sent to the surface of moving parts. Ensure good lubrication of friction surface and prolong its service life. Will the engine be protected if the oil filter of the engine loses its function?
2.Structure of spin on Oil Filter
spin on Oil Filter oil filter is widely used nowadays. It is called spin on Oil Filter Assembly according to the national machinery industry standard. It consists of a simple shell made of high strength sheet steel and a paper composite filter core.
The filter element in the shell is mainly composed of a central tube, a microporous filter paper and an upper and lower end cover. The central tube of the filter element is the framework of the filter element. It is made of thin steel plate. Many round holes are machined on the central tube.
Most oil filters end caps are equipped with bypass valves to ensure timely oil supply to the main oil pipeline due to the high oil viscosity and increased resistance through the filter element during cold start of the engine.
- How to Distinguish True and False Oil Filter Elements
For ordinary consumers, we can not see what level of work is inside the machine filter, we can only use some skills to judge. Here are some practical techniques for judging the filter quality of the machine.
First trick: Judging from the appearance details: the appearance of good filter is bound to look good
Only high quality machine filters are willing to invest the best cost in the appearance details. The counterfeit goods or refurbished goods do not have the ability at all, nor do they bother to do well. In fact, the method of “filter by appearance” is very useful, because a good filter must have a good appearance.
Second trick: see if the filter rubber ring is tough and soft
Good machine filter, its rubber ring material will be very thick, and when pressed by hand will also have a soft feeling, to ensure the sealing around the oil inlet and outlet.
Third trick: see if it has a check valve structure inside
With the help of small tools around to identify whether the machine filter has a check valve structure.
Simply put, a check valve is a device that allows the lubrication system to store as much oil as possible after the vehicle has stalled.
Fourth trick: Put your finger into the filter and touch the inner wall of the machine to
determine if it is fixed properly.
Good machine filter, its filter element will be firmly fixed in the machine filter, under the pressure of oil and vehicle bumps will not shift, to ensure that the oil from the filter paper through the completion of filtering. So, from the fixed distance of the filter element
Fifth trick: shake hard to filter, listen to whether there is a murmur.
A good machine filter can fix the filter element better, and there will be no murmur of interference between components when shaking.
Although the oil filter is small, its function is very big. Many car owners pay much attention to the choice of oil, but ignore the choice of oil filter. To some extent, the oil filter is more important than the oil. Therefore, we must choose genuine oil filters, not cheap and choose fake filters, it will be worthless!
Post time: Jan-09-2019