2314 超急速圧縮装置による予混合気の自発点火特性評価(S27-1 エンジンの点火・燃焼の新展開(1),21世紀地球環境革命の機械工学:人・マイクロナノ・エネルギー・環境)

概要

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Improvement on thermal efficiency in spark ignition engines requires high compression ratio, lean burn, reduction of cooling loss and soon. High compression ratio is the most promising way to improve the thermal efficiency, while engine knock becomes critical problem. High-speed Knocking is difficult to test since it gives mechanical damages to the engines. Therefore, generation mechanism and the method of knocking suppression have not been well clarified. To research the mechanism at the high compression ratios and the high engine speeds, a Super Rapid Compression Machine (SRCM) was developed. By this SRCM, a sudden expansion of end-gas was detected at the beginning of the high-speed knocking occurrence, that indicates a certain heat release before hot flame appearance.
社団法人日本機械学会の論文
2008-08-02