|Title||백철우, 윤현숙, 염기태, 장진영, 배충식, “DME 예혼합 압축착화엔진에서 수소의 영향”, 한국자동차공학회 논문집, vol. 15, No. 2, pp15-21, 2007. 3.|
백철우, 윤현숙, 염기태, 장진영, 배충식, “DME 예혼합 압축착화엔진에서 수소의 영향”, 한국자동차공학회 논문집, vol. 15, No. 2, pp15-21, 2007. 3.
The aim of this paper is controlling ignition timing and load in homogeneous charge compression ignition (HCCI) combustion with low cetane number fuel, hydrogen. Homogeneous charge compression ignition (HCCI) combustion is an advanced combustion technology that achieves higher thermal efficiency and lower NOx emissions than that of conventional combustion system. Dimethyl ether (DME), which has been researched widely as the most attractive alternative fuel of diesel, is attractive for HCCI combustion because of the easy evaporation. In this study, the single cylinder DME engine operated with a direct injection system has been used to investigate combustion processes and emissions of DME HCCI with a premixed hydrogen supply. The experiment was carried out under various engine speed and fraction rates of hydrogen. As a result, the increase of fraction rates of hydrogen retard the DME ignition timing and eliminated the knocking during high engine speed condition. IMEP was increased with increase of fraction rates of hydrogen by 30%. 40% of the fraction rates of hydrogen resulted in misfiring. The NOx emission was reduced by increasing the fraction rates of hydrogen, but HC emission was increased.
|Previous||국상훈, 공장식, 박세익, 배충식, 김장헌, “분사각 및 분공 직경이 예혼합 압축착화 엔진 연소에 미치는 영향”, 한국자동차공학회 논문집, vol. 15, No. 2, pp1-7, 2007. 3.|
|Next||문석수, 최재준, 배충식, “경사노즐 선회분사기의 가솔린 미립화 및 분무 내부 압력 분포”, 대한기계학회 논문집, vol. 31, No. 3, pp283-291, 2007. 3.|