Hydraulic filters generally have three types: air filters, oil filters, and fuel filters, also known as "three filters".
The air filter is located in the engine intake system and is an assembly consisting of one or several filter components that clean the air. Its main function is to filter out harmful impurities in the air that will enter the cylinder, in order to reduce early wear of the cylinder, piston, piston ring, valve and valve seat;
The oil filter is located in the engine lubrication system. Its function is to filter out harmful impurities in the engine oil from the oil pan, and supply clean engine oil to the crankshaft, connecting rod, camshaft, turbocharger, piston ring and other moving pairs, playing a role in lubrication, cooling, and cleaning, thereby extending the life of these components;
There are three types of fuel filters: diesel filters, gasoline filters, and natural gas filters. Its function is to filter out harmful particles and moisture in the engine fuel and gas system, in order to protect the oil pump nozzle, cylinder liner, piston ring, etc., reduce wear, and avoid blockage.
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