There are two major drawbacks, and the new product makes up for the shortcomings, so it is necessary to use the new product strong magnetic oil filter.
Disadvantage 1: Filtering 60% of the impurities in the oil, the filtration efficiency is low;
This is because the existing oil filter relies on a single paper filter hole to intercept and filter out harmful impurities in the oil. The smaller the micropores of the filter paper, the better the filtration effect, but the worse the oil passing ability. In order to solve the problem that the smallest particles of impurities can be filtered out on the same filter paper micropores, it is also possible to supply a sufficient amount of engine oil to the micropores. Through the Filter Branch of the National Internal Combustion Engine Industry Association, the best oil filter on the market can only be designed to filter out 60% of the impurities in the oil. This is the maximum filtration value after thousands of experiments. In actual use, there are still 40% of harmful impurities, which cannot be effectively filtered by the paper filter. Among the 40% impurities, since the ferromagnetic impurities are relatively small and hard, most of the ferromagnetic impurities are used, and the engine damage is also caused. maximum.
Disadvantage 2: The filtration efficiency is zero under special conditions;
There is a bypass valve at the bottom of the paper filter. This is designed to ensure that the engine can be smoothly circulated back to the engine in order to take into account the engine's high viscosity when the cold start oil is too strong or the paper filter is partially blocked or completely blocked. Oil flow channel. When the oil opens the bypass valve under the pressure of the oil pump, the oil that is circulated back to the engine through the bypass valve will not only not filter the paper filter, but also the large particle impurities that have been filtered by the paper filter element. The bypass valve is re-run back into the engine, providing uninterrupted secondary wear to the engine. It can be seen from the above two disadvantages that the impurities which are larger or smaller than the micropores of the paper filter core can not be permanently filtered, and can only be permanent for impurities which are equal to the micropores of the paper filter and embedded in the micropores of the paper filter. Filtration, so the filtration efficiency is extremely low.