| 제목 |
최대 부하 조건에서 수소 예혼합 방식 로터리 엔진의 연소 특성에 대한 수치 해석 연구
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| 분야 |
엔진 및 연소 |
| 언어 |
Korean |
| 저자 |
김홍석(한국기계연구원), 오승묵(한국기계연구원), 박현욱(한국기계연구원), 이준순(한국기계연구원), 김성수(중앙대학교), 김정환(중앙대학교) |
| Key Words |
Port injection(포트분사), Hydrogen combustion(수소연소), CFD(전산유체해석), Rotary engine(로터리 엔진), Spark ignition(불꽃점화) |
| 초록 |
This study presents a numerical investigation on the combustion characteristics of a hydrogen premixed rotary engine under maximum load conditions. By utilizing a two-stroke Wankel engine model, the research explored the combustion process, focusing on the intake, compression, and combustion phases at 3,000 RPM. The intake mixture of hydrogen and fresh air was set at stoichiometry under the intake pressure of 101 kPa, which corresponded to the maximum torque operation of a naturally aspired engine. The findings highlighted the advantages of hydrogen as a fuel, including its high flame propagation speed and superior knocking suppression characteristics. A short ignition delay of -7 CA achieved the increase in peak pressure at just 2 CA after the start of combustion. Knocking was not observed despite the advanced start of combustion. The study also examined the impact of turbulence on combustion efficiency. The results demonstrated that hydrogen rotary engines could achieve significant performance improvements, making them a promising solution for carbon-neutral internal combustion engines. |
| 원문(PDF) |
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