Technical Paper
A Study of the Cycle-to-Cycle Variation of In-Cylinder Flow in a Motored Engine Through Digital Image Processing of Visualized Images
1995-02-01
950727
An experimental study investigating the cyclic variation of the internal air motion has been made in a motored engine having a cup-in-piston combustion chamber. The engine used for this study has a transparent quartz liner and a transparent plastic (acrylic resin) piston. The light source used to produce sheet was a 4 watt argon ion laser with continuous wave beam. The brightness irregularity patterns of particle groups were recorded photographically by a NAC E-10 high speed camera and the bulk flow fields inside of the combustion chamber have been measured at both planes parallel and vertical to the piston crown by means of image processing technique. This paper for the first time reveals the continuous cycle-resolved two-dimensional bulk flow fields inside of the combustion chamber around the compression TDC.
