双成像高速摄影技术及其在柴油机燃烧研究中的应用

本文介绍了用于柴油机燃烧过程研究的同步双成像高速摄影技术。这种摄影技术是将激光焦点光阑阴影光路和直接摄影光路耦合成一个高速摄影系统，在同一幅底片的各１／２幅面上，同时清晰地记录柴油机在同一个燃烧过程中的喷雾、着火和火焰扩展过程，从而把喷雾过程与燃烧过程的研究更紧密地联系在一起，为深入研究柴油机燃油喷雾、混合和燃烧过程提供有效的研究手段

A Study on Combustion Process in Diesel Engines by Two Image Simultaneous High Speed Photography

In this thesis, the technique of two image simultaneous high speed photography for studying the combustion process in a D.I. diesel engine is presented. By using this optical photographing device, the high speed focus shadow photograph and the high speed direct photograph of the combustion process are taken simultaneously in the same picture, which reveals the internal relations among fuel spray characteristics, ignition and combustion flame development. Therefore, this system can be used for better understanding of the combustion mechanism of diesel engines.