International Journal of Naval Architecture and Ocean Engineering

The Society of Naval Architects of Korea (대한조선학회)
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Effective test of lacquer in marine diesel engines

  • Hong, Sung-Ho (Engine & Machinery Division, Hyundai Heavy Industries) ;
  • Ju, Seung-Hwan (Engine & Machinery Division, Hyundai Heavy Industries)
  • Received : 2016.05.18
  • Accepted : 2016.10.15
  • Published : 2017.03.31
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Abstract

We perform an experiment on lacquer formation with simple test device. The anti-lacquer is one of important issues to increase durability, and to improve performance in the engines because the lacquer formation cause sticking of fuel injection pump, scuffing of cylinder liners, and increase of lubricant oil consumption in the marine diesel engines. We suggest this simple test in order to save enormous experimental cost in marine diesel engines, and in order to have ease in performing the various tests. The influences of the Base Number (BN) of lubricant oils and the sulfur content of fuel oils in the formation of lacquer are investigated. In order to investigate physical and chemical properties of lacquer, we perform a variety of tests such as, visual inspection, EDS. In addition, we investigate adhesion of lacquer by pull-off test quantitatively, and perform dissolution test with dilute sulfuric acid.

Keywords

References

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