AIR FLOW VISUALIZATION IN THE CYLINDER OF TWO STROKE ENGINE

Abstract

The performance of small two stroke,. crankcase scavenged, spark ignition engine depends very largly on the effectiveness of scavenging the cylinder and on the amount of fresh charge retained during the scavenging process. This thesis discusses various techniques for study of air flow in the cylinder of a two stroke engine and analysis of different features of scavenging flow. A technique was developed for visualization of air flow in the two-stroke engine cylinder. Video Camera has been used to record the air flow pattern. Aluminium foil tracer particles were introduced in a transparent engine cylinder in which dynamic.scavenging process is simulated. The effect of piston crown shape and crankcase pressure has been studied on flow pattern.