Statistics show that about 30 to 50% of failures of different types of diesel engines occur in the fuel supply system, of which 50 to 70% are related to fuel purification.
The performance of the fuel filter system has a significant impact on the reliability and durability of the fuel supply device and the performance reliability of the internal combustion engine. As a result, the development of internal combustion engines has to put forward strict requirements for the fuel filtration system of the internal combustion engine, especially for modern Diesel engines and the filtration systems of modern automobile electronically controlled diesel engines put forward strict requirements.
The specific requirements are as follows:
(1) Impurities in the diesel engine that are harmful to the wear of the fuel injection pump and injection precision parts must be filtered out 100%. The absolute filtration accuracy of the filter is not greater than 3um.
(2) The filtration system must have the function of filtering free water in diesel fuel. The efficiency of filtering free water is not less than 95%.
(3) During the service life of the filter on the diesel engine, its diesel passing capacity (flow rate and resistance) must meet the requirements of the matching diesel engine.
(4) The filter must be resistant to vibration and hydraulic pulses during its service life on the diesel engine, and should be able to be used reliably under normal operating conditions.
(5) Measures must be taken to eliminate the air inside the filtration system (preferably with automatic exhaust measures) to prevent air blockage from occurring and affecting the normal operation of the diesel engine.
The market price of diesel filters ranges from several hundred to several thousand, and the quality varies greatly. There are also some fake and shoddy products. If you buy inferior products for cheap, the final price you pay may be a complete set of fuel injectors or even an engine replacement. , so everyone must find a regular manufacturer when purchasing an oil-water separator.
