Types of Oil Filters

Different  types  of  oil  filters  used  in  automotive engines are as follows:

• Cartridge  Type  Oil  Filters.  It consists of a filtering element placed in a metallic casing. Casing has  inlet  and outlet openings and a drain plug. The impure lubricating oil from oil pump enters casing through filtering element, which takes up all impurities. The filtered oil then comes out from the casing and  goes  to the main oil gallery. The filtering element may be cleaned properly when clogged. If the condition of the element is not good, it should be replaced.

Cartridge Type Oil Filter

• Edge Type Oil Filters. It consists of a number of discs in a casing through which the oil passes. These alternate discs are mounted  over  a central spindle, and the discs between spindles are fixed to a separate square rod. The clearance between two discs is only thousand of a centimeter. When the oil flows to this small clearance, it leaves impurities on the disc peripheries. By operating the central spindle periodically the impurities so collected on the discs are removed.

Edge Type Oil Filter

• Centrifugal Type Oil Filters. It consists of a stationary casing, rotor casing, central spindle and tubes with jets. The impure oil enters the hollow central spindle and through holes around its periphery, the oil goes to the rotor casing. From the rotor casing the oil goes in the tubes, at the end of which jets are attached. The oil passes through these jets under pressure, the reaction of which gives the motion to the rotor casing so that it starts rotating. The oil from the jets sprayed on the walls of the stationary casing under heavy pressure, where the impurities are retained and clean oil falls below, which is taken for the use. The filter walls are cleaned periodically.

Centrifugal Type Oil Filter