火炎発光の分光学的計測によるメタノールATACエンジンの燃焼解析

抄録

To analyze the combustion mechanism of the so-called ATAC (active thermo-atmosphere combustion) in a two-stroke S.I. engine, the measuring system to get an image of radical luminescence in the combustion chamber was developed. The ATAC engine tested was equipped with a quartz window at the cylinder head. The instantaneous luminescence image from radical species was observed using an image intensifier with a band pass filter for both conventional combustion and ATAC operation conditions. Before starting heat release, emissions from OH radicals were observed, and after that, emissions from CH were observed. It was found that the ignition was initiated over the ennre area of the combustion chamber and that "bulk"-like and/or "non propagate" combustion occurred during ATAC engine operation.