A Study on the Performance Improvement of Diesel Automobile Engine with Ultrasonic Fuel Feeding System(II)-On the Spray Characteristics and Engine Performance-

초음파 연료분사장치용 디젤자동차의 성능향상에 관한 연구(II)-분무특성과 기관성능에 대하여-

This is an experimental study on the performance characteristics of Diesel Automobile with ultrasonic fuel feeding system. For this purpose, ultrasonic fuel feeding system was made and atomization characteristics was measured. Base on this result, carried out engine dynamometer test to investigate the performance characteristics of diesel automobile with ultrasonic fuel feeding system in comparison with conventional diesel fuel injector. The results are as follows. 1) In the spray characteristics test, fuel particle sizes were decreased about 11%~21%. 2) In engine dynamometer test, -The power was increased about 5%~11%. -The thermal efficiency was improved about 6%~11%. -The specific fuel consumption was improved about 6%~19%. -The smoke concentration was decreased about 11%~50%.