2022 China New Design Chery Qq - Genuine car oil filter original for chery – Qingzhi

During the operation of the engine, metal wear debris, dust, carbon deposits and colloidal deposits oxidized at high temperature, water, etc. are constantly mixed with the lubricating oil. The function of the oil filter is to filter out these mechanical impurities and colloids, ensure the cleanness of the lubricating oil and prolong its service life. The oil filter shall have strong filtering capacity, small flow resistance and long service life. In general, several filters with different filtration capacity – filter collector, primary filter and secondary filter are installed in the main oil passage in parallel or in series. (the filter connected in series with the main oil passage is called full flow filter. When the engine is working, all lubricating oil is filtered through the filter; the filter connected in parallel is called split flow filter). The first strainer is connected in series in the main oil passage, which is full flow type; The secondary filter is connected in parallel in the main oil passage and is of split flow type. Modern car engines are generally equipped with only a filter collector and a full flow oil filter. The coarse filter is used to filter the impurities with particle size of more than 0.05mm in the engine oil, and the fine filter is used to filter the fine impurities with particle size of more than 0.001mm.

● filter paper: the oil filter has higher requirements for filter paper than the air filter, mainly because the temperature of the oil varies from 0 to 300 degrees. Under the drastic temperature change, the concentration of the oil also changes accordingly, which will affect the filtering flow of the oil. The filter paper of high-quality engine oil filter should be able to filter impurities under severe temperature changes and ensure sufficient flow at the same time.

● rubber seal ring: the filter seal ring of high-quality engine oil is synthesized with special rubber to ensure 100% no oil leakage.

● backflow suppression valve: only available in high-quality oil filter. When the engine is off, it can prevent the oil filter from drying; When the engine is re ignited, it immediately generates pressure to supply oil to lubricate the engine. (also known as check valve)

● overflow valve: only available in high-quality oil filter. When the external temperature drops to a certain value or when the oil filter exceeds the normal service life, the overflow valve will open under special pressure to allow unfiltered oil to flow directly into the engine. However, the impurities in the oil will enter the engine together, but the damage is much smaller than that caused by no oil in the engine. Therefore, the overflow valve is the key to protect the engine in an emergency. (also known as bypass valve)