A Study of the Correlation between In-Cylinder Air Motion and Combustion in Gasoline Engines
- 1 July 1989
- journal article
- research article
- Published by SAGE Publications in Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering
- Vol. 203 (3) , 185-192
- https://doi.org/10.1243/pime_proc_1989_203_165_02
Abstract
This paper describes an investigation into the effects of in-cylinder air motion at the spark plugs on gasoline engine performance. Measurements of combustion angles have been made in a single-cylinder four-stroke disc combustion chamber engine at part load and MBT ignition timing. Seventeen in-cylinder air motion regimes have been produced using masked valves. The air motion in each build has been evaluated by making laser Doppler anemometry (LDA) measurements of mean velocity and turbulence intensity at the spark plug position under motored conditions. It has been shown that there is a strong correlation between turbulence intensity and 10–90 per cent burn angle. It is demonstrated that for this combustion chamber geometry a tumbling air motion is a more effective means of generating turbulence at TDC than swirl.Keywords
This publication has 2 references indexed in Scilit:
- Experimental and Theoretical Investigation of Turbulent Burning Model for Internal Combustion EnginesSAE International Journal of Advances and Current Practices in Mobility, 1974
- Motion Pictures of Engine Flames Correlated with Pressure CardsSAE International Journal of Advances and Current Practices in Mobility, 1938