Disadvantage 1: 60% of impurities in the oil are filtered out, and 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 pores of the filter paper, the better the filtering effect, but the worse the oil passing ability. In order to solve the contradiction that the smallest particles of impurities can be filtered out on the same filter paper pores, and a sufficient amount of oil supplied to the engine can also pass through the pores. According to 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 impurities in the oil, which is the maximum filtering value obtained after thousands of experiments. In actual use, there are still 40% of harmful impurities, which cannot be effectively filtered by the paper filter element. Among these 40% impurities, ferromagnetic impurities are relatively small and hard, so most of them are ferromagnetic impurities, which will also damage the engine. maximum.