The oil filter is located in the engine lubrication system. Its upstream is the oil pump, and downstream is the parts of the engine that need lubrication. The function is to filter harmful impurities in the oil from the oil sump, and supply the lubricating oil to the motion pair such as the crankshaft, the connecting rod, the camshaft, the supercharger and the piston ring to play the role of lubrication, cooling and cleaning. Extend the life of these components.
According to different filtering functions, it is divided into: oil filter, fuel filter (gasoline filter, diesel filter, oil water separator, hydraulic filter), air filter, air conditioner filter, etc. The engine has three kinds of filters: air, oil and fuel. It is generally called "three filters", plus air conditioner filters, commonly known as four filters. Separate the lubrication system, the medium in the combustion system, the engine intake system, and the cabin air circulation system.
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