Abstract
This paper reviews the studies on lacquer formation in medium-speed and low-speed engines. Lacquer mainly forms in the cylinder liner and fuel injection pump. This causes increased oil consumption, sticking of the fuel injection pump, scuffing in the cylinder liner, and so on. The mechanisms and causes of lacquer formation that have been proposed so far are introduced, and an explanation is given on the physical and chemical properties of lacquer formation by various analytical methods, such as melting test by acids, surface roughness measurement, pull-off test, and visual inspection. Moreover, a comparison is made of several experimental methods suggested in previous studies related to lacquer formation. Methods to prevent or remove lacquer formation in medium and low speed engines are also presented. In addition, this paper describes fundamental ongoing research.
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Recommended by Associate Editor In-Ha Sung
Sung-Ho Hong received his Ph.D. in the Department of Mechanical Engineering at Korea Advanced Institute of Science and Technology. He has worked extensively on Tribology at Engine and Machinery Division in Hyundai Heavy Industries. His current research interests include Fuel injection pump and journal bearing in medium-speed diesel engine, machine condition monitoring system based on lubricant analysis, diagnostics and prognostics.
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Hong, SH. A literature review of lacquer formation in medium-speed and low-speed engines. J Mech Sci Technol 30, 5651–5657 (2016). https://doi.org/10.1007/s12206-016-1134-1
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DOI: https://doi.org/10.1007/s12206-016-1134-1