Introduction of filters
The metal wear debris, dust, high temperature oxidation of carbon and colloidal sediments, water. is continuously mixed with the lubricant when the engine working process. The role of the oil filter is to filter out mechanical impurities and gum, and to be clean of lubricant, and to extend its period of use. The oil filter should have a filtration capacity, small flow resistance, long life and other properties. General lubrication system are installed with several different filtration capacity of the filter – set filter, coarse filter and fine filter, respectively, parallel or series in the main oil. (Called full-flow filters in series with the main oil, engine lubricant all work by filter filtration; called in parallel with the shunt-type filter). Strainer a series in the main oil, for the full flow; fine filter in parallel with the main oil path for the shunt type. Generally only has a set of filters and a full flow oil filter on a modern car engine.
The technical characteristics of the filters
Filter paper: the requirements of the oil filter on the filter paper air filter, because the oil temperature from 0 to 300 degrees, in severe sudden changes in temperature, the concentration of oil corresponding change, which willaffect the flow of oil filter. Quality oil filters filter paper to drastic temperature changes, filter impurities and to ensure adequate flow.
Rubber seals: high quality oil filter seals with special rubber synthetic, to guarantee 100% no leakage.
Back inhibition of the valve: only high-quality oil filters only. When the engine stalled, it can prevent the oil filter to dry; when the engine re-ignition, it is immediate pressure to supply the oil lubricating the engine.
Relief valve: only high quality oil filters only. When the external temperature is reduced to a particular value or beyond the normal use period when the oil filter, relief valve will open under special pressure to allow unfiltered oil to flow directly into the engine. As a result, the impurities in the oil into the engine, but it is much smaller than the loss of engine oil caused. The relief valve is critical to protect the engine in case of emergency.
The installation and replacement cycle of the filters
a) draining or sucking the old oil
b) Loosen the screws, remove the old oil filter
c) a layer of oil rubbed in the new oil filter seal
d) Install new oil filter and tighten the fixing screws
The recommended replacement cycle: cars and commercial vehicles are replaced every six months