種別 国内論文 No. 24 年度 2007
論文名 低カロリーガス火花点火機関の性能と排気 (個別ガス成分の基本燃焼特性)
Performance and Emissions of a Spark-Ignition Engine Fuelled with Lower Calorific Gases (Basic Combustion Characteristics of Individual Gas Component)
著者名 Mikiya ARAKI Seiichi SHIGA
掲載誌名 日本機械学会誌
 H2、CO、CH4の3種の燃料ガスを用いた火花点火機関での基本的な燃焼特性について調べた。

 単気筒エンジンを、1500min-1のWOT(wide open throttle:スロットル全開)条件下で運転した。

 COガスはH2ガスとCH4ガスより低い熱効率を示した。H2ガスが引火上限点に影響していることがわかった。
This paper presents basic combustion characteristics of a spark-ignition engine fuelled with three kinds of gaseous fuels ; H2, CO, and CH4. A single-cylinder engine was operated under WOT at 1500 min−1 condition. CO gas gives lower thermal efficiency than H2 and CH4, since the energy of the fuel can not be transferred to the pressure or the work, although it gives higher combustion temperature which makes the higher exhaust gas temperature and much higher NOx emissions than those for CH4. H2 gives upper limit of flammability due to the occurrence of backfire and almost comparable thermal efficiency with that for CH4 at its stoichiometric condition.