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The Main Function of the Fuel Filter

Ⅰ. The main function of the fuel filter


The main function of the fuel filter is to filter out impurities in gasoline.


1. The petrol fuel filter belongs to a fuel filter. The fuel filter includes both the petrol fuel filter and the diesel filter. So for gasoline vehicles, the fuel filter is the petrol fuel filter.


2. Filter out harmful particles and moisture in the fuel system of the engine. A fuel filter can protect the oil pump and nozzle, cylinder liner and piston ring to reduce wear and avoid blockage.


3. A fuel filter removes iron oxide, dust and other solid impurities contained in the fuel to prevent the fuel system from clogging. It reduces mechanical wear, ensures stable engine operation and improves reliability.


Ⅱ. The structure of a fuel filter


A fuel filter is connected in series on the pipeline between the fuel pump and the throttle body inlet. The function of the fuel filter is to remove solid impurities such as iron oxide and dust contained in the fuel to prevent the fuel system from being blocked. It reduces mechanical wear, ensures stable engine operation and improves reliability.


A fuel filter consists of an aluminum housing and a bracket with stainless steel inside. A high-efficiency filter paper is installed on the holder, which is in the shape of a chrysanthemum to increase the flow area. Since the EFI filter often bears the fuel pressure of 200-300KPA, the compressive strength of the filter is generally required to reach more than 500KPA. The carburetor filter does not need to reach such a high pressure. The recommended replacement cycle of the fuel filter should vary according to its own structure, performance and use, and they cannot be generalized.

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