Transactions of the Korean Society of Mechanical Engineers B (대한기계학회논문집B)

The Korean Society of Mechanical Engineers (대한기계학회)
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The Flow Characteristics of Fuel Droplets between the Twin Spray for 4-hole Gasoline Injectors

4공 가솔린 분사기의 2중 분무 사이에서 연료 액적들의 유동특성

  • 김원태 (전북대학교 기계항공시스템공학부) ;
  • 강신재 (전북대학교 기계항공시스템공학부, 공업기술연구센터) ;
  • 노병준 (전북대학교 기계항공시스템공학부, 자동차신기술연구센터)
  • Published : 2003.04.01
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Abstract

This study investigates the flow characteristics of fuel droplets between twin spray for the 4-hole injector used a 4-valve gasoline engine. The injectors for this study were the three types of 4-hole gasoline injector in which orifice diameter was 0.24mm. The spray behavior of twin spray was investigated by means of visualization employed stroboscope. A PDPA system was employed to simultaneously measure the size and velocity of fuel droplets. The 3 dimensional mean velocities. droplet size distributions, SMD and joint probability density function of velocity and droplet size are analyzed at the center of the spray and the center region of twin spray. As a result, the configurations of injector exit such as orifice interval and length of outlet, are very important factors that affect the flow characteristics of fuel droplets at the center region of twin spray.

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References

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