The three filters, that is, the oil filter, the diesel filter and the air filter, mainly act on the filtration and cleaning of the engine.

1. Oil filter
The main function of the oil filter is to remove dust, particles and other impurities in the oil to protect the engine. The filtered oil supplies the crankshaft, connecting rod, camshaft, supercharger, piston ring and other moving accessories to lubricate, cool and clean, thereby extending the life of the parts.
Now the rotary filter is the most commonly used, its internal check valve, bypass valve, sealing point is only one, the whole replacement, greatly improve the sealing, and easy to replace, the filter material is mostly imported filter paper, so the filter efficiency is high, the flow resistance is small, long life.

2. Fuel filter
A fuel filter, a fuel filter device, which is connected in series in the pipeline between the fuel pump and the throttle body inlet, generally on the side of the engine common rail system. Through it can get better oil quality diesel, so as to protect the normal operation of the engine, reduce wear, avoid blockage, improve engine life. Used to filter harmful solids and water in fuel.

3. Air filter
Air filter, diesel engine work requires air and diesel efficient mixing, if the air contains impurities will affect the combustion efficiency or damage the engine.
Air filter is generally installed in the intake system in front of the engine intake pipe, its main role is to filter out harmful impurities in the air that will enter the cylinder, to reduce the early wear of the cylinder, piston, piston ring, valve and valve seat, improve the durability of the engine, according to the structural form is divided into dry type and wet type two, wet air filter and oil immersion and oil bath type two.

For trucks, especially engineering vehicles, their working environment is harsh, its air filter must be multistage, two-stage dry air filter and dry and wet combined air filter are applied, and oil bath/dry combined air filter is the most common in engineering vehicles.

At present, in addition to inferior oil products, the market is also full of fake and shoddy filters. Although the price is very low, the service life is short, and the impurities can not be thoroughly filtered, so when choosing the filter product, we should choose the high-quality products of the original factory.

In addition, the filter as a common truck consumables, technology innovation, structure has been optimized, but the best product structure is still inseparable from the reasonable maintenance of the driver friend, in the daily driving process should be observed more, remember to maintain due, so as to ensure the safety and efficiency of the truck, reduce transportation costs.

Truck oil filters, diesel filters and air filters are mainly used to filter and clean the engine.