Browse > Article

A Study on Feed Rate Characteristics of Motor-driven Cylinder Lubricator with Electronic Control Quill in a Large Two-stroke Diesel Engine  

Bae, Myung-Whan (Engineering Research Institute, School of Mechanical and Aerospace Engineering, Gyeongsang National University)
Jung, Hwa (Jinju Campus of Korea Polytechnic VII Colleges)
Jung, Yeun-Hak (Graduate School, Gyeongsang National University)
Kim, In-Deok (Graduate School, Gyeongsang National University)
Kang, Chang-Ho (Engineering Research Institute, Gyeongsang National University)
Publication Information
Transactions of the Korean Society of Automotive Engineers / v.15, no.6, 2007 , pp. 1-8 More about this Journal
Abstract
Minimizing the cylinder wear and the consumption rate of cylinder oil in a large two-stroke marine diesel engine is of great economic importance. In Korea, authors first developed a motor-driven cylinder lubricator for a Wartsila Switzerland large two-stroke diesel engine. The characteristic of the developed product is that can control automatically the oil feed rate with a load fluctuation by the motor drive and the offset cam. For manufacturing the reliable and useful products, however, it is necessary to investigate further characteristics and to improve performances as a cylinder lubricator. In this study, the effects of pump motor speed, plunger stroke and cylinder back pressure on oil feed rate, maximum discharge and delivery pressures are experimentally investigated by using the electronically controlled quill injection system and distributer in the developed cylinder lubricator. It is found that the oil feed rates of electronic control and mechanical type quills with the in-cylinder back pressure are differently characterized by the role of accumulator, the viscous resistance of contact area, etc. It can be also shown that the maximum discharge pressure of the electronic control quill is lower than the mechanical type one but the maximum discharge pressure difference of two types decreased as plunger stroke is small, and the maximum delivery pressures of two types increased as plunger stroke, motor speed and back pressure are elevated but the maximum delivery pressure of mechanical type is higher than the one of electronic control type.
Keywords
Cylinder lubricator; Large two-stroke diesel engine; Oil feed rate; Electronic control quill; Distributer; Maximum discharge and delivery pressures; Plunger stroke;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 M. W. Bae, 'The Development of Cylinder Lubricator for Large Two-Stroke Marine Diesel Engine,' Proposal of Region-Specific Technology Development Project, pp.1-42, 2002
2 M. W. Bae, H. Jung and H. J. Ok, 'A Study on Effect of Cylinder Back Pressure upon Feed Rate and Delivery Characteristics of Motor- Driven Lubricator in a Large Two-Stroke Diesel Engine,' Transactions of KSAE, Vol.13, No.5, pp.19- 28, 2005   과학기술학회마을
3 M. Tanaka, 'Improved Cylinder Lubricator,' Journal of the Japan Institution of Marine Engineering, Vol.37, No.2, pp.32-40, 2002
4 K. Sakaguchi and T. Yamamoto, 'Latest Developments in Cylinder Lubricating Systems,' Journal of the Japan Institution of Marine Engineering, Vol.40, No.2, pp.72-77, 2005
5 M. W. Bae, H. Jung, M. H. Ahn, K. H. Kyung, Y. K. Kim and Y. Mochimaru, 'Feed Rate Characteristics of Cylinder Lubricator Driven by Motor in a Large Two-Stroke Marine Diesel Engine,' Proceedings of the Korea Conference on Liquid Atomization and Spray Systems 2003, pp.102-111, 2003
6 M. W. Bae, 'Present Development Situation of Cylinder Lubricator in a Large Two-Stroke Marine Diesel Engine,' Ship's Machinery 2004, pp.45-62, 2004
7 H. Yamada, M. Haneda, H. Sugawara and Y. Nagai, 'Condition Monitoring of Diesel Engine by Cylinder Oil Drain Analysis,' Journal of the Marine Engineering Society in Japan, Vol.35, No.7, pp.472-476, 2000   DOI
8 M. W. Bae, H. Jung, H. J. Ok and Y. Mochimaru, 'The Effect of Back Pressure on Performance of Motor-driven Cylinder Lubricator in a Large Two-stroke Marine Diesel Engine,' Proceedings of the 7th International Symposium on Marine Engineering ISME TOKYO 2005 (ISME2005-32-4), pp.1-7(CD), 2005
9 T. Jensen, 'Swirl Injection Lubrication Low Cylin- der Oil Consumption without Sacrificing Wear Rates,' Journal of the Japan Institution of Marine Engineering, Vol.37, No.2, pp.41-50, 2002
10 M. W. Bae, H. Jung, H. J. Ok, I. D. Kim and Y. Mochimaru, 'Effect of Quill Accumulator upon Performance of Motor-driven Cylinder Lubricator in a Large Two-stroke Diesel Engine,' Proceedings of the 18th Internal Combustion Engine International Symposium, JSAE, pp.1- 6(CD), 2005