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The Equipment Principle Of Three Filters
Mar 28, 2018

The three major automotive filter devices are fuel filters, oil filters, and air filters. They have their own principles inside:

1. The fuel filter is on the line between the fuel pump and the inlet of the throttle body. The function of the fuel filter is to remove solid impurities such as iron oxides and dust contained in the fuel oil to prevent the fuel system from being clogged (especially the fuel injectors), reduce mechanical wear, ensure stable operation of the engine, and improve reliability. The fuel device of the filter device consists of an aluminum housing and a stainless steel bracket. A high-efficiency filter paper assembly is mounted on the support. The filter paper is chrysanthemum shaped to increase the flow area. The EFI filter cannot be used with the carburetor filter. Because the EFI filter is often subjected to fuel pressures of 200 to 300 kPa, the pressure strength of the filter device is generally required to be over 500 kPa, and the carburetor filter is not necessary to achieve such a high pressure.

2. The oil filter is located in the engine lubrication system. Its upstream is the oil pump and downstream is the parts that need to be lubricated in the engine. Its role is to filter out the harmful impurities from the oil sump of the oil pan and provide the clean oil to the crankshaft, connecting rod, camshaft, supercharger, piston ring and other motion pairs to play a role of lubrication, cooling and cleaning. Extend the life of these components.

3. The air cleaner is located in the engine air intake system. It is an assembly of one or more clean air filter components. Its main role is to filter out harmful impurities in the air that will enter the cylinder to reduce the early wear of cylinders, pistons, piston rings, valves and valve seats.