What are the fuel requirements for automotive components (high-pressure common rail components)
The high-pressure common rail components of automobiles have strict requirements for fuel, as follows:
1. High fuel cleanliness requirements: The parts of the high-pressure common rail system have extremely precise dimensions, with gaps usually only 2 to 10 microns. This requires that diesel entering the high-pressure pipeline must not have particles larger than 6 microns, and particles larger th
The high-pressure common rail components of automobiles have strict requirements for fuel, as follows:
1. High fuel cleanliness requirements: The parts of the high-pressure common rail system have extremely precise dimensions, with gaps usually only 2 to 10 microns. This requires that diesel entering the high-pressure pipeline must not have particles larger than 6 microns, and particles larger than 4 microns must not exceed 160 particles per milliliter. If the fuel cleanliness is not up to standard, impurities can cause premature wear and blockage of precision components such as high-pressure pumps and injectors, leading to engine black smoke, weakness, and difficulty starting.
2. There are strict limits on the water content of fuel: The high-pressure common rail system also has strict requirements for the water content of diesel entering the low-pressure and high-pressure pipelines, with free water generally not exceeding 10PPM. Excessive water content in diesel can cause rusting of the fuel pump, sticking and rusting of the fuel injector, resulting in engine weakness, black smoke emission, and even difficulty starting.
3. The fuel grade should be appropriate: Different grades of fuel have different physical and chemical properties, such as cetane number. High pressure common rail engines require the use of appropriately labeled fuel according to their design requirements to ensure good combustion of fuel within the engine, achieving efficient power output and lower emissions. If the fuel grade is not appropriate, it may cause problems such as insufficient combustion, decreased power, and increased fuel consumption in the engine.
4. Good stability of fuel: Fuel should have good chemical stability and be less prone to oxidation, deterioration, and other issues during storage and use. Otherwise, oxides and impurities in the fuel may clog the fuel filter and injectors, affecting the normal operation of the high-pressure common rail system.
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