The coarse filter is connected in series between the oil pump and the main oil passage, which is called a full-flow filter. It is mainly used to remove the larger impurities in the oil. At present, paper filters are commonly used at home and abroad.

Paper filter

Paper filter mainly consists ofthe cover, housing, paper filter element and bypass valve and other components. When the engine work, lubricating oilwith the pressure will be gotten into thecavity of filter element, the large impurities in the oil will be blocked by the filter element, cleaner oilwill enter into the filter cavity, and then through the mouth into the oil passage of cylinder block.

The oil filter makes the lubricating oil flow more unimpeded, avoiding the impurity scratches the surface oftrimmed parts, the oil must be more strictly filtered,before sent to the friction surface before. In order to achieve the filtering effect, and will not let the oil resistance increases, usually the coarse filter and the main oil in series, fine filter and the main oil passage in parallel.

Hollow shaft will be fixed on the housing, rotorbody and pot head into one,that is located in the thrust bearing, it can rotate freely around the rotor shaft. The compression nut fixthe rotor cover and the rotor body together and is pressed against the spring to limit the rotor movement. The rotor will be fitted with two opposing nozzles. When the engine is running, a small portion of the oil is pumped from the oil pump will through the port to enter the filter

Float oil filter

In order to make the oil pump work better, it is necessary to remove the large particles of lubricating oil before entering the oil pump, the task is borne by the filter. It is connected to the oil pump inlet, when oil pump at work, the oil from the cover and the gap of the float was inhaled, it will filter coarse impuritiesthrough the strainer, enter into the oil pump by the welding of the tub , When the strainer is blocked, the suction of oil pipe will increase, wire equipment can overcome the strong force of the strainer,then leaving the badge away from the cover, the oil will enter into the suction pipe from collar extension directly not through the strainer.