oil filter

A filter is an accessory that acts as a filter for impurities or gases through a filter paper. Generally refers to automobile filters, is the engine accessories.

According to different filtration functions are divided into: oil filters, fuel filters (gasoline filters, diesel filters, oil-water separators, hydraulic filters), air filters, air conditioning filters and so on. The engine has air, oil, fuel three filters, generally known as "three filters", plus air conditioning filters, commonly known as four filters. Respectively responsible for the lubrication system, combustion system in the media, engine air intake system, cabin air circulation system filtration.

Filter paper requirements

Oil filter on the filter paper requirements than the air filter higher, mainly because the oil temperature change from 0 to 300 degrees, ranging from the drastic temperature change, the concentration of oil has also changed accordingly, which will affect the oil filtration flow. The filter paper of a good quality oil filter is able to filter out impurities and ensure sufficient flow under drastic temperature changes.

Function

Oil filter in the lubrication system in order to make the lubrication system oil flow unimpeded, to avoid impurities scratching, pulling the surface of the parts, the oil in the friction surface before sending, must be strictly filtered. In order to achieve satisfactory filtering effect, but not to increase the oil resistance, generally the coarse filter and the main oil in series, fine filter and the main oil in parallel.

1, float-type oil filter, in order to make the oil pump works well, the lubricating oil must be in the large particles of impurities in the oil pump into the oil pump before getting rid of this task by the set of filters. It is connected to the oil pump inlet, the oil pump work, the oil from the hood and the slit between the float is sucked in, through the screen to filter out coarse impurities, welded to the float by the oil pipe into the oil pump. When the screen is blocked, the suction of the oil inlet pipe increases, overcoming the strength of the screen and make the bad mouth to leave the hood, the oil will not pass through the screen and directly from the ring mouth into the suction pipe.

2, coarse filter in series between the oil pump and the main oil channel, so also known as full-flow filter, used to remove larger impurities in the oil. Mainly by the upper cover, shell, paper filter element and bypass valve and other components. When the engine is working, with the pressure of the lubricating oil into the filter element around the filter element into the cavity around the larger impurities in the oil is blocked by the paper filter element, and clean lubricating oil into the inner cavity of the filter element, and then by the oil into the cylinder block through the mouth of the main oilway.

3, fine filter: its role is to filter out the lubricating oil in the smaller impurities, usually in parallel with the main oil channel, centrifugal and cardboard type two.