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

The Korean Society of Mechanical Engineers (대한기계학회)
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The Effect of the Intake Flow on the Spray Structure of a High Pressure 11-Hole Fuel Injector in a DISI Engine

직접분사식 가솔린 기관에서 흡입유동이 고압 11공 연료분사기의 분무형상에 미치는 영향

  • 김성수 (신라대학교 공과대학 자동차기계공학과)
  • Published : 2009.09.01
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Abstract

The effect of the intake flow on the spray structure of a high pressure 11-hole fuel injector were examined in a single cylinder optical direct injection spark ignition (DISI) engine. The effects of injection timing and in-cylinder charge motion were investigated using the 2-dimensional Mie scattering technique. It was confirmed that in the homogeneous charge mode, the in-cylinder swirl charge motion played a major role in the fuel spray distribution during the induction stroke rather than the tumble flow. But, in the stratified charge mode, the effect of the in-cylinder charge was not so large that the injected spray pattern was nearly maintained and the increase of in-cylinder pressure by the upward moving piston reduced the fuel spray penetration.

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References

  1. Nouri, J. M. and Whitelaw, J. H., 2002, 'Effect of Chamber Pressure on the Spray Structure from a Swirl Pressure Atomiser for Direct Injection Gasoline Engines,' Proc. of the 1st Int. Conference on Optical Diagnostics, ICOLAD, 1, pp. 121-129
  2. Wirth, M., Piock, W. F., Fraidl, G. K. K., Schoeggi, P. and Winklhofer, E., 1998, 'Gasoline DI Engines: the Complete System Approach by Interaction of Advanced Development Tools,' SAE 980492
  3. Fraidl, G. K., Piock, W. F. and Wirth, M., 1996, 'Gasoline Direct Injection: Actual Trends and Future Strategies for Injection and Combustion Systems,' SAE 960465
  4. Wirth, M., Zimmermann, D., Friedfeldt, R., Caine, J., Schamel, A., Davies, M., Peirce, G., Storch, A., Ries-Mueller, K., Gansert, K.P., Pilgram, G., Ortmann, R., Wuerfel, G. and Gerhardt, J., 2004, 'A Cost Optimised Gasoline Spray Guided Direct Injection System for Improved Fuel Economy,' Seminar on Fuel Economy and Engine Downsizing, Institution of Mechanical Engineers, One Birdcage Walk, London
  5. Nouri, J. M. and Whitelaw, J. H., 2006, 'Impingement of Gasoline Sprays on Angled Plates,' Int. Journal of Atomization and Sprays, Vol. 16, No. 6, pp. 705-726 https://doi.org/10.1615/AtomizSpr.v16.i6.70
  6. Li, T, Nishida, K. and Hiroyasu, H., 2004, 'Characterization of Initial Spray from a D.I. Gasoline Injector by Holography and Laser Diffraction Method,' Int. Journal of Atomization and Sprays, Vol. 14, pp. 477-494 https://doi.org/10.1615/AtomizSpr.v14.i5.40
  7. Mitroglou, N., 2005, 'Multi-Hole Injectors for Direct-Injection Gasoline Engines,' PhD Thesis, The City University
  8. Oh, H. C., Wang, H., Park, J. S. and Bae, C. S., 2009, 'Effect of Injection Signal on Spray Characteristic of Piezo Actuated Outward-Opening Injector,' KSAE09-B0023
  9. Kim, S. S., 2008, 'Experimental Study on Spray Structure of a High Pressure 6-Hole Injector by Mie Scattering Technique,' KSME-B, Vol. 32, No. 3, pp. 216-223 https://doi.org/10.3795/KSME-B.2008.32.11.878