Comparison of steady and unsteady two-phase flow at engine intake valves

D. M. Ellerman; Brian E. Milton; Masud Behnia

doi:10.1117/12.516794

1 August 2003 Comparison of steady and unsteady two-phase flow at engine intake valves

D. M. Ellerman, Brian E. Milton, Masud Behnia

Proceedings Volume 4948, 25th International Congress on High-Speed Photography and Photonics; (2003) https://doi.org/10.1117/12.516794
Event: 25th international Congress on High-Speed photography and Photonics, 2002, Beaune, France

Abstract

A comparison between the steady and unsteady two-phase air/fuel flow through an internal combustion engine intake valve has been studied experimentally in a specially designed rig. The atomization of liquid fuel film flows aroud the valve gap and its subsequent impingement onto the neighboring walls can readily be seen. Similarities in the flow patterns between steady and unsteady modes of valve and injector operation are also apparent. The effects of altering the injection timing for the unsteady case shows that injection prior to valve opening yields a considerable increase of fuel impingement within the chamber beneath the valve. A brief description of the base airflow is also given alongside the two-phase data.

Citation Download Citation

D. M. Ellerman, Brian E. Milton, and Masud Behnia "Comparison of steady and unsteady two-phase flow at engine intake valves", Proc. SPIE 4948, 25th International Congress on High-Speed Photography and Photonics, (1 August 2003); https://doi.org/10.1117/12.516794

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