简介:The transient behaviour of the fuel spray from an air-assisted fuel
injector in a constant volume chamber has been investigated
experimentally. The relative Sauter mean diameter (SMD) of the
spray droplets was determi简介:The transient behaviour of the fuel spray from an air-assisted fuel
injector in a constant volume chamber has been investigated
experimentally. The relative Sauter mean diameter (SMD) of the
spray droplets was determined using planar laser induced
fluorescence (PLIF) and planar Mie scattering. Planar images of
the ensemble averaged relative SMD with various injection
conditions were obtained by calculating the ratio between the two
laser light intensities at a given point. The penetration length and
the spray shape factor were also obtained. The ensemble
averaged results suggest the existence of vortices that are shed
from the injector tip, and which entrain the smaller droplets.
Results also show that the characteristics of the injector vary
weakly with several particular injection parameters, notably the
fuel injection pressure and the delay between fuel and air
injection.详细>