Journal of Mechanical Science and Technology

  • 제14권12호
  • /
  • Pages.1376-1385
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  • 2000
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  • 1738-494X(pISSN)
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  • 1976-3824(eISSN)
대한기계학회 (The Korean Society of Mechanical Engineers)
권호 표지

Gasoline Spray Characteristics Impinging onto the Wall Surface in Suction Air Flow

  • Kim, Woo-Tae (Graduate School of Precision Mechanical Engineering, Chonbuk National University) ;
  • Kang, Shin-Jae (Faculty of Mechanical Engineering, Chongbuk National University) ;
  • Park, Byung-Joon (Faculty of Mechanical Engineering, Chongbuk National University)
  • 발행 : 2000.12.01
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초록

This study investigates spray characteristics before and after wall impingingment of gasoline spray in suction air flow. For this study, a rectangular model intake port was made of acrylic glass, and suction air was generated by using the forced air blower contrariwise. The injector for this study was a pintle-type port gasoline injector in which an air-assist adaptor is installed to supply assisted air. A PDPA system was employed to simultaneously measure the size and velocity of droplets near the wall. Measured droplets are divided into "pre-impinging droplets"with positive normal velocity and "post-impinging droplets"were negative normal velocity for the suction flow. The velocities, size distributions and Sauter mean diameter(SMD) of pre-and post-impinging droplets for varions injection angles and air-assists are comparatively analyzed.

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참고문헌

  1. Arcoumanis, C., Whitelaw, D. S. and Whitelaw, J. H., 1997, 'Gasoline Injection against Surface and Films,' Atomization and Sprays, Vol. 5, pp. 417-433
  2. Brenn, G., Domnick, J., Dorfner, V., Durst, F. and Tremel, P., 1995, 'Unsteady Gasoline Injection Experiments: Comparison of Measurements in Quiescent Air and in a Model Intake Port,' SAE 950512, p. 1-11
  3. Das, S. and Dent, J. C., 1994, 'A Study of Air assisted Fuel Injection into a Cylinder,' SAE 941876, pp. 1908-1917
  4. Fox, J. W., Min, K. D., Cheng, W. K., and Heywood, J. B. 1992, 'Mixture Preparation in a SI Engine with Port Fuel Injection During Starting and Warm-up,' SAE 922170, pp. 1088-1099
  5. Furuyama, M. and Minowa, E. 1994, 'Visualization of Intake Port Wall Flow of 4-valve Engines,' JSAE 9432075, Vol, 25, No. 2, pp. 5-10
  6. Iwano, H., Jaitoh, M., Sawamoto, K., and Nagaishi, H., 1991, 'An Analysis of Introduction Port Fuel Behavior,' SAE 912348, pp. 1777-1786
  7. Kelly-Zion, P. L., Deyoung, C.A., Peters, J. E., and White, R. A., 995, 'In-Cylinder Fuel Drop Size and Wall Impingement Measurements,' SAE 952480. pp. 1-12
  8. Kihm, K. D., Lyn , G. M. and Son, W. Y., 1995, 'Atomization of Cross-injecting Sprays into Convective Air Stream,' Atomization and Sprays, Vol, 5, pp. 417-433
  9. Kim, W. T. Rho, B. J. and Kang, S. J., 1998, 'On the Intermittent Spray Characteristics,' KSME International Journal, Vol, 12, No. 5, pp. 907-913
  10. Lee, S. G., Kim, W. T., Rho, B. J., and Kang, S. J., 1998, 'Fuel spray Characteristics Impinging onto the Wall Surface,' Proc.of 4th KSME-JEME Fluids Eng.Conf. pp. 557-560
  11. Nagaoka, M., Kawazoe, H., and Namura, N., 1994, 'Modeling Fuel Spray Impingement on a Hot Wall for Gasoline Engines,' SAE 940525, pp. 878-896
  12. Nemecek, L. M., Wagner, R. M., and Drallmeier, A., 1995, 'Fuel Droplet Entrainment Studies for Minimization of Cold-Start Wall-Wetting,' SAE 950908, pp. 1-11
  13. Rho, B.J., Kang, S. J., and Kim, W.T., 1999, 'A Study on the Spray Behavior of Air-Assist Type Gasoline Fuel Injector in Intake Port,' Transactions of the KSME, Vol, 23, No. 1, pp. 92-103
  14. Wagner, R.,M., Nemecek, L. M., and Drallmeier, J. A., 1997, 'Fuel Delivery in a Port Fuel Injected Spark Ignition Engine,' Atomization and Sprays, Vol, 7, pp. 629-648