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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
- 학술저널
- 저자정보
- 발행연도
- 2004.3
- 수록면
- 551 - 558 (8page)
이용수
초록· 키워드
오류제보하기
Recently, fuel prices have been continually raised in diesel engine. Such a change in the fuel price influences enormously the development trend of marine diesel engines for slow speed. In other words, the focus was shifted from large diameter and high speed to low fuel consumption. Accordingly, more efforts are being made for engine manufacturing and development to develop highly efficient engines.
In this study, a single cylinder 4 stroke cycle DI slow speed diesel engine was designed and manufactured a 4 stroke cycle was configured and basic performances were evaluated. The results are as follows.
The optimal fuel injection timing had the lowest value when specific fuel consumption was in BTDC 8~10˚, a little more delayed compared to high speed diesel engines. Cycle variation of engines showed about 5% difference at full loads. This is a significantly small value compared to the cycle variation in which stable operation is possible, showing the high stability of engine operation is good. The torque and brake thermal efficiency of engine increased with an increase of engine 250~450 rpm, but fuel consumption ratio increased from the 450 rpm zone and thermal efficiency abruptly decreased. Mechanical efficiency was maximally 70% at a 400 rpm that was lower than normal engines according to the increase of mechanical frictional loss for cross head part. The purpose of this study was to get more practical engines by comparing the above results with those of slow speed 2 stroke cycle diesel engines.
In this study, a single cylinder 4 stroke cycle DI slow speed diesel engine was designed and manufactured a 4 stroke cycle was configured and basic performances were evaluated. The results are as follows.
The optimal fuel injection timing had the lowest value when specific fuel consumption was in BTDC 8~10˚, a little more delayed compared to high speed diesel engines. Cycle variation of engines showed about 5% difference at full loads. This is a significantly small value compared to the cycle variation in which stable operation is possible, showing the high stability of engine operation is good. The torque and brake thermal efficiency of engine increased with an increase of engine 250~450 rpm, but fuel consumption ratio increased from the 450 rpm zone and thermal efficiency abruptly decreased. Mechanical efficiency was maximally 70% at a 400 rpm that was lower than normal engines according to the increase of mechanical frictional loss for cross head part. The purpose of this study was to get more practical engines by comparing the above results with those of slow speed 2 stroke cycle diesel engines.
목차
1. 서론
2. 저속 디젤기관의 구성 및 특징
3. 실험 장치 및 방법
4. 운전 최적화 및 성능평가
5. 결론
Reference
참고문헌 (8)
참고문헌 신청
[학술지(정기간행물)] - / 2002 / 선박용 롱 스트로크 디젤기관의 아트킨슨 사이클화에 의한 열효율 향상 : 1 ~ 9
[학술지(정기간행물)] - / 2002. / 저속 2행정 디젤엔진의 진동특성과 방진대책 27 (2) : 174 ~ 180
[학술지(정기간행물)] - / 2002 / MAN B＆W 저속 2행정 디젤기관의 최근동향 26 (5) : 512 ~ 525
[학술지(정기간행물)] - / 1980. / HITACHI-B&W and Sulzer Economical Slow Speed Diesel Engine 235
[학술지(정기간행물)] - / 2002 / A Study on the Development of Automotive Hydrogen Fueled Engine with High Power and High Efficiency : 39 ~ 42
[학술지(정기간행물)] - / 2002. / 저속 2행정 디젤엔진의 진동특성과 방진대책 27 (2) : 174 ~ 180
[학술지(정기간행물)] - / 2002 / MAN B＆W 저속 2행정 디젤기관의 최근동향 26 (5) : 512 ~ 525
[학술지(정기간행물)] - / 1980. / HITACHI-B&W and Sulzer Economical Slow Speed Diesel Engine 235
[학술지(정기간행물)] - / 2002 / A Study on the Development of Automotive Hydrogen Fueled Engine with High Power and High Efficiency : 39 ~ 42
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