A Study on the Performance of Diesel Automobile of Ultrasonic Fuel Supply System(I) -About the Droplet Size Distribution of Ultrasonic Fuel Supply System -

초음파(超音波) 연료공급장치용(燃料供給裝置用) 디젤자동차(自動車)의 성능(性能) 향상(向上) 관한 연구(I) -초음파 연료공급장치를 통과한 연료의 분무특성에 대하여-

This study carried out to investigate the spray characteristics of diesel oil through out ultrasonic fuel supply system in comparison with conventional. Size of the droplets comprising diesel spray was measured by immersed liquid method at different positions along the spray axis. Droplets distribution diagram was ploted and Sauter Mean Diameter(SMD) was also calculated. The effects of the ultrasonic vibration and injection pressure on the droplet size distribution and SMD were investigated. As the ultrasonic vibration supply SMD decreases on the same injection pressure conditions with conventional injector's. But the effect of ultrasonic vibration decreases with injection pressure increasing.