선박엔진 부품의 성능 향상을 위한 초기 마모 및 윤활 해석 연구
Simulation of the Initial Wear and Lubrication Performance of Marine Engine Components
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Recently, the demand for improving energy efficiency has rapidly increased because of the growing concerns over environmental issues. In this work, the tribo-test and simulation for the initial wear and lubrication performance were performed for the piston pin in the small end system of the connecting rod of a marine engine, to obtain useful data for improving the efficiency of marine engine systems. In addition, a diamond-like carbon (DLC) coating was applied to the piston pin to explore feasibility of eliminating the bush used in the system. The initial wear and lubrication characteristics between the uncoated piston pin and bush were compared with that between the DLC-coated piston pin and connecting rod in the tribo-test. The simulation for the wear and lubrication performance according to the wear progression was conducted based on the data obtained from the test. The wear characteristics were quantitatively assessed by the wear depth and wear volume, and the lubrication performance was characterized with the change of pressure and minimum oil film thickness with respect to the crank angle. It was found that the DLC-coated piston pin may provide better initial wear characteristics and lubrication performance. The results of this work may provide fundamental information for marine engines with improved efficiency.
Abstract
Recently, the demand for improving energy efficiency has rapidly increased because of the growing concerns over environmental issues. In this work, the tribo-test and simulation for the initial wear and lubrication performance were performed for the piston pin in the small end system of the connecting rod of a marine engine, to obtain useful data for improving the efficiency of marine engine systems. In addition, a diamond-like carbon (DLC) coating was applied to the piston pin to explore feasibility of eliminating the bush used in the system. The initial wear and lubrication characteristics between the uncoated piston pin and bush were compared with that between the DLC-coated piston pin and connecting rod in the tribo-test. The simulation for the wear and lubrication performance according to the wear progression was conducted based on the data obtained from the test. The wear characteristics were quantitatively assessed by the wear depth and wear volume, and the lubrication performance was characterized with the change of pressure and minimum oil film thickness with respect to the crank angle. It was found that the DLC-coated piston pin may provide better initial wear characteristics and lubrication performance. The results of this work may provide fundamental information for marine engines with improved efficiency.
참고문헌 (9)
- 안성찬, "박용엔진 피스톤 스커트 프로파일 변경에 의한마찰손실(FMEP) 저감 연구", 한국트라이볼로지학회지, 32(4), pp.132~139 (2016), 한국트라이볼로지학회[DOI]
- 김진열, "디젤엔진용 실린더 라이너 소재의 고온 마모특성", 대한기계학회논문집 A, 39(11), pp.1131~1136 (2015), 대한기계학회
- 손정호, "Fretting damage prediction of connecting rod of marine diesel engine", Journal of Mechanical Science and Technology, 25(2), pp.441~447 (2011), 대한기계학회
- 오윤석, "증착방법에 따른 DLC 막의 마찰-마모 특성평가", 한국세라믹학회지, 46(5), pp.497~504 (2009), 한국세라믹학회
- Al Mahmud, K. A. H, "An updated overview of diamond-like carbon coating intribology", Critical reviews in solid state and materials sciences, 40(2), pp.90~118 (2015)
- 안성찬, "탄성유체윤활해석에 의한 연료 펌프 저널베어링 최적간극 선정 연구", 한국트라이볼로지학회지, 33(1), pp.23~30 (2017), 한국트라이볼로지학회[DOI]
- N. Patir, "An average flow model for determining effects of three-dimensional roughness on partial hydrodynamic lubrication", J. of Lubrication Tech, 100, pp.12~17 (1978)
- N. Patir, "Application of average flow model to lubrication between rough sliding surfaces", J. of Lubrication Tech, 101, pp.220~229 (1979)
- Greenwood, James A., "The contact of two nominally flat rough surfaces", Proceedings of the institution of mechanical engineers, 185(1), pp.625~633 (1970)