Journal of Mechanical Science and Technology

The Korean Society of Mechanical Engineers (대한기계학회)
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A Numerical Study of the Effects of Piston Head Configurations on Stratified Mixture Formation in Gasoline Direct-injection Engines

  • Cha, Kyung-Se (Department of Mechanical Engineering, Chonnam National University) ;
  • Park, Chan-Guk (Department of Mechanical Engineering, Chonnam National University) ;
  • Tomoyuki Wakisaka (Department of Mechanical Engineering, Osaka City University)
  • Published : 2002.04.01
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Abstract

In this paper, the characteristics of flow and spray motions affected by from piston head configurations were investigated numerically. Calculations were carried out from intake process to the end of compression. GTT (Generalized Tank and Tube method) code, which includes a third order upwind Chakravarthy-Osher TVD scheme and k-$\varepsilon$ turbulence model with fuel spray analysis was used for the calculations. As a results, piston heads with smaller radii of curvature were found to give stronger reverse tumble than those with larger radii of curvature. Similar results are shown in the convection and diffusion of fuel sprays.

Keywords

References

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