지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 연구보고서
- 저자정보
- 발행연도
- 1998.11
- 수록면
- 65 - 78 (14page)
이용수
초록· 키워드
오류제보하기
The residual gas and mixture preparation is a key contributor to both the combustion and emissions of automotive gasoline engine. Residual gas fraction and air-fuel ratio near spark plug may have an effect on combustion characteristics especially at low load since it is related to early flame development. Therefore, measurements of residual gas fraction and cycle resolved equivalence ratio near spark plug is particularly important for better understanding of their contribution on combustion and emissions.
This paper describes how we measured residual gas fraction and how we determined in-cylinder equivalence ratio from the measured hydrocarbon concentrations near spark plug using a Fast Response Flame Ionization Detector (FRFID). Residual gas fraction was measured over wide range of engine operating conditions. Effect of valve timing and overlap on residual gas fraction was also investigated. The procedures established were then applied to a limited engine operating conditions, and the cycle resolved equivalence ratio near spark plug was determined from the measured HC concentration. The results showed that with premixed propane fuel cyclic variation of equivalence ratio near spark plug was quite small and correspond with overall equivalence ratio from the exhaust UEGO signal. But on the contrary, with gasoline fuel the equivalence ratio near spark plug varied by up to 10% and did not coincide with the UEGO sensor signal on a cyclic basis. The variation of equivalence ratio near the spark plug affected the heat release rate, which was then reflected on the indicated mean effective pressure. It was also observed that cyclic variation of the equivalence ratio near spark plug might e one origin of cycle by cycle variation.
This paper describes how we measured residual gas fraction and how we determined in-cylinder equivalence ratio from the measured hydrocarbon concentrations near spark plug using a Fast Response Flame Ionization Detector (FRFID). Residual gas fraction was measured over wide range of engine operating conditions. Effect of valve timing and overlap on residual gas fraction was also investigated. The procedures established were then applied to a limited engine operating conditions, and the cycle resolved equivalence ratio near spark plug was determined from the measured HC concentration. The results showed that with premixed propane fuel cyclic variation of equivalence ratio near spark plug was quite small and correspond with overall equivalence ratio from the exhaust UEGO signal. But on the contrary, with gasoline fuel the equivalence ratio near spark plug varied by up to 10% and did not coincide with the UEGO sensor signal on a cyclic basis. The variation of equivalence ratio near the spark plug affected the heat release rate, which was then reflected on the indicated mean effective pressure. It was also observed that cyclic variation of the equivalence ratio near spark plug might e one origin of cycle by cycle variation.
목차
ABSTRACT
INTRODUCTION
EXPERIMENTAL APPARATUS AND CONDITION
FRFID CALIBRATION
RESIDUAL GAS FRACTION MEASUREMENT
EFFECT OF ENGINE OPERATING PARAMETERS ON RGF
DETERMINATION OF EQUIVALENCE RATIO
CYCLE RESOLVED EQUIVALENCE RATIO NEAR THE SPARK PLUG
CYCLE RESOLVED EQUIVALENCE RATIO NEAR THE SPARK PLUG AND ITS EFFECTS ON COMBUSTION
CONCLUSIONS
NOMENCLATURE
REFERENCES
참고문헌 (0)
참고문헌 신청함께 읽어보면 좋을 논문
논문 유사도에 따라 DBpia 가 추천하는 논문입니다. 함께 보면 좋을 연관 논문을 확인해보세요!
-
가솔린 엔진의 밸브타이밍 변화가 부분부하 조건에서 잔류가스량 및 연소특성에 미치는 영향
한국자동차공학회논문집
2000 .07
-
가솔린 엔진의 밸브타이밍 변화가 부분부하 조건에서 잔류가스량 및 연소특성에 미치는 영향
한국자동차공학회 춘 추계 학술대회 논문집
1998 .11
-
전기점화기관에서 실린더내 잔류가스량 측정방법에 관한 연구
한국자동차공학회 춘 추계 학술대회 논문집
1996 .11
-
예연소실 점화플러그의 화염가시화와 화염전파특성
한국가시화정보학회지
2016 .12
-
예연소실 점화플러그의 화염가시화와 화염전파특성
한국자동차공학회 춘계학술대회
2009 .04
-
점화플러그 삽입 위치에 따른 SI 엔진의 연소특성에 관한 연구
대한기계학회 논문집 B권
2004 .10
-
예 연소실을 갖는 점화플러그의 연소 특성에 관한 연구
대한기계학회 춘추학술대회
2005 .11
-
엔진속도 변화에 따른 연소실내 Spark Plug 주위의 유동특성 고찰 ( Characteristics of In - Cylinder Flow Near the Spark - Plug for Different Engine Speeds )
대한기계학회 논문집 B권
1996 .07
-
예연소실을 갖는 점화플러그의 공연비 변화에 따른 연소 및 화염전파 특성
대한기계학회 논문집 B권
2008 .02
-
스파크 플러그를 이용한 공연비 측정
한국자동차공학회 춘 추계 학술대회 논문집
1998 .11
-
점화시스템이 희박연소기관의 성능에 미치는 영향 (Ⅲ) (형상 및 설계)
한국자동차공학회 춘 추계 학술대회 논문집
1998 .11
-
예연소실을 갖는 점화플러그의 연소 특성에 관한 연구
대한기계학회 논문집 B권
2007 .08
-
스파크 플러그를 이용한 혼합기 농도 측정
한국자동차공학회논문집
2000 .07
-
THE ANALYSIS OF SPARK PLUG VOLTAGE IN KNOCK DETECTING
한국자동차공학회 춘 추계 학술대회 논문집
1996 .11
-
점화플러그 위치에 따른 SI 단기통 엔진의 배출가스특성에 관한 연구
대한기계학회 춘추학술대회
2004 .04
-
Flow Direction Characteristics in the Vicinity of the Spark Plug in an S. I. Engine
KSME International Journal
2000 .08
-
COMBUSTION CHARACTERISTICS OF A SMALL DIESEL ENGINE CONVERTED TO SPARK IGNITION OPERATION AND FUELLED WITH NATURAL GAS
한국자동차공학회 춘 추계 학술대회 논문집
1995 .06
-
스파크점화 기관에서 고속응답 FID를 이용한 실린더내 잔류가스량 측정에 관한 연구
한국자동차공학회논문집
1998 .01
-
스파크플러그를 이용한 실린더내의 이상폭발검출에 관한 연구
한국자동차공학회 춘 추계 학술대회 논문집
1998 .05
-
스파크 점화 기관에서 밸브오버랩이 잔류가스율 변화에 미치는 영향
한국자동차공학회논문집
2002 .11
이 논문의 저자 정보
최근 본 자료
댓글(0)
0
UCI(KEPA) : I410-ECN-0101-2009-556-014129897