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

The Korean Society of Mechanical Engineers (대한기계학회)
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Effect of Injection Pressure on Atomization Characteristics of Fuel Spray in High-Pressure Gasoline Injector

가솔린 인젝터의 연료 분무 미립화 특성에 미치는 분사 압력의 영향

  • 이창식 (한양대학교 기계공학부) ;
  • 최수천 (동서울대학 기계과) ;
  • 김민규 (한양대학교 대학원 기계공학과) ;
  • 권상일 (한양대학교 대학원 기계공학과)
  • Published : 2000.04.01
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Abstract

This paper describes the macroscopic behavior and atomization characteristics of the high-pressure gasoline injector in direct-injection gasoline engine. The global spray behavior of fuel injector was visualized by shadowgraph technique. The atomization characteristics of gasoline spray such as mean diameter and mean velocity of droplet were measured by the phase Doppler particle analyzer system. In order to obtain the influence of fuel injection pressure, the macroscopic visualization and experiment of particle measurement on the fuel spray were investigated at 3,5 and 7 MPa of injection pressure under different surrounding pressure in the spray chamber. The results of this work show that the fuel injection pressure of gasoline injector in GDl engine has influence upon the mean droplet diameter, mean velocity of spray droplet, the spray tip penetration, and spray width under the elevated ambient pressure.

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References

  1. Zhao, F. Q., Lai, M. C., and Harrington, D. L., 1995, ' The Spray Characteristics of Automotive Port Fuel Injection-A Critical Review,' SAE Paper 950506
  2. Zhao, F. Q., Lai M. C, and Harrington, D. L., 1997, ' A Review of Mixture Preparation and Combustion Control Strategies for Spark-Ignited Direct-Injection Gasoline Engines ,' SAE Paper 970627
  3. Lee, C. S., Lee, K. H., Chon, M. S., Kim, Y. H., Park, J. S., and Cho, N. H., 1998, 'A Study on the Spray Structure of High Pressure Gasoline Injection,' The 3th Conference of ILASS-Asia, pp.37 -42
  4. Iwamoto, Y, Noma, K., Nakayama, O., Yamaguchi, T., and Ando, H., 1997, 'Development of Gasoline direct. Injection Engine,' SAE paper 970514
  5. Dodge, L. G., 1996, 'Fuel Preparation requirements for direct-injection spark ignition Engine,' SAE paper No. 962015
  6. Lee, C F., and Bracco, F. V: 1994, 'Initial comparisons of Computed and Measured Hollow-cone Sprays in an Engine,' SAE paper, 940398
  7. Zhao, F. Q., Yoo, J. H., Liu, Y, and Lai, M. C., 1996, 'Spray Dynamics of High Pressure Fuel Injectors for DI Gasoline Engines,' SAE Paper 961925
  8. Lee, C. S., Lee, K. H., Chon, M. S., and Kim, Y H., 1999, 'A Study on Spray Structure of Gasoline Fuel Injector,' IPC-10 Proceedings, No. 99049, pp. 309-310