B101 異なる燃料に対する点火方式の影響調査(OS3 バイオマス・新燃料・環境技術(1))

抄録

Due to the environmental problems such as global warming and shortage of fossil fuel resources, natural gas and biomass ethanol have been used as alternative fuels of conventional gasoline Also high thermal efficiently combustion technology that can save fuel is strongly demanded Lean burn and EGR (Exhaust Gas Recirculation) dilution technology have been well known as high efficient combustion strategy However, dilution of mixture by air or EGR reduces ignitability and deteriorates ignition stability, Leading to slow burning velocity Recently, an ignition system which uses low-temperature plasma discharge has been proposed as a new device to improve ignition performance In this study, a performance of the newly developed repetitive pulse low temperature discharge ignition system was experimentally investigated The experiments were conducted using a small 4-stroke single cylinder engine Three fuels (gasoline, city gas, and ethanol) which have different ignitability were used As a result, the lean limit for stable ignition successfully was extended using the proposed low-temperature plasma discharge ignition system