副室付火花点火機関における火炎伝播の画像処理

概要

論文の詳細を見る
To obtain a better understanding of the combustion process in a spark ignition engine with an unscavenged horizontal prechamber, the flame propagations in both the pre-and main chambers are simultaneously visualized with a high speed camera, while keeping the volumetric efficiency and air-fuel ratio constant. By using a CCD video camera and a A/D converter, the flame photographs are converted into digital image data (512×512,pixels) and are image-processed with a personal computer to make more clear the flame front. Consequently, the images of flame front for each crank angle enhanced by thresholding and edge-detecting techniques are used to make flame propagation maps, which contribute to examine in detail the combustion process. In addition, the brightness distributions of burnt gas obtained from the flame image data in the main chamber show a reasonable agreement with the gas temperature diagrams measured by an infrared pyrometer.
東海大学の論文