단기통 가시화엔진의 제작 및 연소실험

A single-cylinder optical research engine for combustion visualization has been developed by modifying a 4-cylinder DOHC. spark-ignition engine. The design tips for the optical engine development are described and the visualized flame images are given. The optical engine has a piston-top window in the extended piston which allows optical access into the combustion chamber for flow and combustion research. The flame propagation at 800rpm was imaged by an ICCD camera for stoicheometric mixture under idling condition. Flame images imply that the initial flames are convected by the organized tumbling flow in the pent-roof combustion chamber.