수소첨가 LPG기관의 성능 및 배출가스 특성에 관한 실험적 연구

다국어 초록 (Multilingual Abstract)

Recent research has focused on alternative fuel to improve engine performance and to comply with emission regulation. Finding an alternative fuel and reducing environment pollution are the main goals for future internal combustion engines. The purpose of this study is to obtain low-emission and high-efficiency by hydrogen enriched LPG fuel in LPG engine and is to clarify the effects of hydrogen enrichment in LPG fuelled engine on exhaust emission and performance. An experimental study was carried out to obtain fundamental data for performance and emission characteristics of hydrogen enrichment in LPG engine.
The experiment was conducted at 2000rpm, bmep 2bar, 4bar conditions while changing 0, 5, 10, 20% hydrogen substitutions. The results mentioned that the combustion duration was shortened due to rapid flame propagation velocity of hydrogen. These phenomena were attributed to the burning velocity which increased exponentially with the increased hydrogen fraction in the hydrogen-LPG fuel blend. Hydrogen has much wider flammable limit than methane, propane or gasoline and the minimum ignition energy is about an order of magnitude lower than for other combustion. By adding hydrogen, CO₂ and HC were reduced. However, NOX was increased due to high rate of heat release for hydrogen substitutions.

목차 (Table of Contents)

• Abstract
• 1. 서론
• 2. 실험 장치 및 실험 방법
• 3. 실험 결과 및 고찰
• 4. 결론
• Reference