The measurement system of atomization field was built on a centrifugal fuel slinger test bench. A suction hood with multi-well plate was used to prevent the oil mist spill

and its flow field was calculated by simulation. Performance parameters such as fuel droplet space distribution

size distribution and atomization cone angle were measured by pulsed digital holography under different rotary speeds. Results indicated that the radial velocity of suction hood was uniform

the velocity field near the fuel slinger was an order of magnitude lower than the droplet velocity

so its influence on the atomization field was small. The 20 μm peak droplet size of atomization field accounted for 20%-30%. With increase of the rotary speed

droplet size Sauter mean diameter (SMD) gradually decreased

atomization field was centralized to axial direction and atomization cone angle was reduced. At the same rotary speed

with the increasing distance away from the nozzle outlet

the droplet size SMD rose

and when the speed increased

the amplitude diminished.