Abstract
In order to improve combustion in a rotary engine which has a chamber recess in each rotor face and two sparkplugs on the housing, it is necessary to understand the effect of squish flow on flame propagation, because the movement of the rotor generates strong squish in the direction of rotation.
To this end, the patterns of squish were visualized near TDC of compression stroke in a motordriven transparent engine, by using the spark tracing technique. The behavior of flame fronts was observed by means of high-speed camera and investigated by using a one-dimensional flame propagation model.
Based on the results, the relationship between squish flow and flame propagation was clarified.
