フレームトーチ・イグナイタの性能向上に関する研究

概要

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Studies on the performance-improvement of flame torch igniters were conducted for a fuel jet injected into a high speed air stream. In the torch used in this study, the combustion reaction of a impingement jet of hydrogen and oxygen proceeds in a channel, and the reacting mixture with abundant intermediate chemical species (radicals) is ejected from the outlet of the channel. It was observed that this impingement type igniter operates stably even when the channel length is decreased. The reduction of the length of the reaction channel results in a performance improvement of the igniter, and also an augmentation of the torch by a low-power electric discharge improves markedly the performance. Furthermore, it was shown, based on spectroscopic and temperature measurements, that the concentrations of OH or other radicals in the ejectd gas play an important role on the ignition performance, the thermal energy of the ejected gas is not important on the ignition of this type, and that in the case of electrically augmented torches, most of the electrical energy are used for the production of radicals rather than the dissipation into thermal energy.
東海大学の論文