EFFECTS OF AMBIENT CONDITIONS ON DUCTED SPRAYS WITH DIESEL AND GASOLINE
Source abstract
Abstract
The method of installing a duct in the front of the injector nozzle has been proved to be effective. This paper mainly studies the effects of fuel properties on ducted fuel injection (DFI). The gas-liquid two phases of spray under different working conditions are captured by using an optical testing system in a constant volume combustion chamber. According to the experimental results, it's found that increasing the back pressure has a promotion effect on the DFI spray, enhancing the spray penetration and spray area relative to the free spray for diesel and gasoline. Furthermore, increasing ambient temperature can promote the effect of DFI spray for gasoline by increasing the spray penetration and spray area. However, the boosting effect is weaker for diesel DFI spray. Whether it's gasoline or diesel, increasing the injection pressure can further enhance the DFI spray to increase the potential of the spray penetration and spray area. However, it should be mentioned that DFI boosts the spray dispersion under high back pressure conditions, but worsens the spray dispersion under low back pressure conditions, especially under flash boiling conditions for gasoline. To a large extent, DFI spray can improve spray characteristics and the fuel/air mixture compared to free spray.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Advanced Combustion Engine Technologies · Vehicle emissions and performance · Atmospheric chemistry and aerosols
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (27)
Show source-provided references
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