Browse > Article
http://dx.doi.org/10.5916/jkosme.2011.35.4.436

Estimation of Engine Output for Marine Diesel Engines  

Jung, Kyun-Sik (한국해양대학교 대학원)
Lee, Jin-Uk (한국해양대학교)
Jung, Jin-Ah (한국해양대학교)
Choi, Jae-Sung (한국해양대학교)
Publication Information
Journal of Advanced Marine Engineering and Technology / v.35, no.4, 2011 , pp. 436-442 More about this Journal
Abstract
To obtain the engine output correctly is basically very important factor for estimating a engine performance. But, it has been reported that the IHP measured from electronic indicator such as MIPS(Mean Indication Pressure System) has a deviation compared to mechanical indicator. It was reported by authors that the uncertainty of crank angle for TDC position could be one of the reasons. In this paper, the uncertainty of crank angle for TDC position and its influence to engine output were investigated respectively about M/E and G/E for marine diesel engines. For the purpose, two sampling methods of pressure in cylinder were considered which were 'angle base sampling' and 'time base sampling'. Angle base sampling is real crank angle acquired from angle encoder which is attached to crank shaft and time base sampling is crank angle calculated by detected revolution with Z-pluse of encoder. Time base sampling is same method of MIPS. This paper concluded that time base sampling method is not suitable for obtaining the output of marine diesel engine on board because of instantaneous speed variation and load fluctuation. Also it is verified that the variation of engine speed by load fluctuation should be one of reasons additionally in case of M/E.
Keywords
Marine diesel engine; Engine performance; Electronic indicator; Mechanical indicator; Engine output; TDC;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
1 Kazumasa lida, Katsuo Akishino, Kazuo Kido, "IMEP estimation from instantaneous crankshaft torque variation", SAE Paper No.900617, 1990.
2 배상수, 임인건, 김세웅, 김응서, "사이클 내 크랭크축 각속도의 변동 해석", 한국자동차공학회논문집, 제4권, 제2호, pp. 166-172, 1996.   과학기술학회마을
3 Se-Woog Kim, "Misfire Detection of the Automotive Engine by Analysis of the Crankshaft Speed", 서울대학교 공학박사 학위논문, 1996.
4 G.Rizzoni, "Diagnosis of Individual Cylinder Misfires by Signature Analysis of Crank shaft Speed Fluctuations", SAE Paper No.890884, 1989.
5 Lars karlsson and Jarl Sobel, "Strole by stroke measurement of diesel engine performance on board", CIMAC Congress Kyoto Paper no.23, 2004.
6 최재성, 이진욱, 이상득, 조권회 "저속박용디젤기관의 순간회전속도 변동에 관한 연구", 한국마린엔지니어링학회지. 제31권 제2호, pp. 138-144, 2007.   과학기술학회마을   DOI