융합정보논문지 (Journal of Convergence for Information Technology)

중소기업융합학회 (Convergence Society for SMB)
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예연소실 점화 플러그의 화염 분출구 직경에 따른 매립지가스의 연소 특성

Combustion Characteristics of Land Fill Gas according to the Diameter of the Flame outlet of the Pre-chamber Spark Plug

  • 김권세 (아주자동차대학 친환경자동차공학과) ;
  • 전영철 (공주대학교 기계자동차공학부) ;
  • 최두석 (공주대학교 미래자동차공학과)
  • Kim, Kwonse (Department of Eco-friendly Car Engineering, Ajou Motor College) ;
  • Jeon, Yeong-Cheol (Division of Mechanical & automotive Engineering, Kongju National University) ;
  • Choi, Doo-Seuk (Dept. of Future automotive Engineering, Kongju National University)
  • 투고 : 2021.05.30
  • 심사 : 2021.07.20
  • 발행 : 2021.07.28
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초록

본 연구는 LFG(Land Fill Gas)의 주성분인 메탄(CH4) 60%와 이산화탄소(CO2) 40%로 구성된 매립지가스를 활용하여 정적연소 환경에서 연소의 초기 불안정성을 해결할 수 있는 실험적인 연구결과를 제안하는 것이다. 실험조건은 공기과잉율 0.9~1.6, 초기연소를 위한 압축압력 3bar, 실험주변온도 25℃, 실험용 연료가스 메탄, 예연소실 화염 분출구 직경 2.5, 3.0, 3.5, 4.0, 4.5mm로 설정하였다. 실험결과 M3.0 모델에서 초기화염의 확산성이 매우 증가된 특성을 확인할 수 있으며, 이와 같은 증가의 특성은 공기 과잉률이 0.9, 1.0, 1.2에서 오리피스의 효과가 극도로 향상하게 되었다는 점을 알 수 있었다. 결과적으로, 본 실험을 통하여 M3.0으로 설계된 예연소실 화염 분출구 치수를 LFG에 적용할 경우 기존의 점화 플러그 특성 보다 부분적인 연소의 성능을 높일 수 있다는 점을 확인할 수 있었다.

This research work is to suggest the experimental results capable of solving an initial unsuitability of combustion and environment in a constant volume combustion chamber by using LFG(Land Fill Gas) which consists of 40% CO2 and 60% CH4. The experimental condition is set as 0.9~1.6 of air-fuel ratio, 3bar of combustion pressure, 25℃ of room temperature, methane for using gas, and 2.5~4.5 of Pre-chamber hole sizes. As a result, it can be seen that diffusion of initial flame is significantly increased by M3.0 model comparing with other one. The reason for the characteristics is that orifice effect is extremely improved by 0.9, 1.0, and 1.2 of air-fuel ratio comparing with other one. Consequently, this experiment is shown that M3.0 model is partially capable of improving combustion performance than a conventional ignition plug in case of applying to LFG with Pre-chamber design.

키워드

과제정보

This Research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education(No. 2020R1F1A1076408)

참고문헌

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