Fuel filter, used to filter out debris in fuel, alias is an oil-water separator and a diesel filter, a microporous paper filter, and the like. The fuel filter is filtered through filtration. In the early stage, the filter element of the gasoline filter has several metal sheets, metal screen, nylon, porous ceramic type.

The engine engine is basically an internal combustion engine, mainly using both gasoline and diesel fuel. As a fuel, it will inevitably have a certain requirement for the quality and cleaning of the oil. Due to refining processing, the finished fuel contains a quantity of impurities, moisture and gum. The function of the fuel filter is to remove these debris in the fuel to supply clean fuel to the engine. If the fuel filter is poor, the debris in the gasoline is easily blocked in the tank of the oil, and the chemical oil is poorly working, and the combustible mixture is thinned; the debris in diesel enters the injection pump, and can accelerate the wear of precision dipping To reduce the pump oil pressure. If the moisture in the fuel, the gum is entered in the cylinder, and the combustible mixed air is combunned, which causes the power of the engine to drop. Gasoline filters typically only one level is installed between the fuel tank and the gasoline pump or between the gasoline pump and the chemical oil. Due to three precision diphesis in the diesel supply system, the degree of cleaning of diesel is high, and the concentrate in diesel is high, in order to improve filter efficiency, diesel filter generally two or even two or more, divided into Diesel, fine filters, also known as oil and water separators and diesel fine filters. The diesel tank and the oil supply pump are mounted, and the oil supply pump and the fuel injection pump are provided, and some diesel engines also have a precipitation cup to precipitate moisture and impurities in diesel.