Design and experimental development of a new electronically controlled cylinder lubrication system for the large two-stroke crosshead diesel engines

Yuhai He, Peilin Zhou, Liangtao Xie, Jiyun Zhang

Research output: Contribution to journalArticle

1 Citation (Scopus)
20 Downloads (Pure)

Abstract

Accurate, stable and reliable lubrication for the cylinders is very important to ensure the trouble-free operation of the marine diesel engines. A new electronically controlled cylinder lubrication system has been developed to remedy the defects of the conventional mechanical lubrication system. This new system’s design method, composition and implementation are described. The sensitivity tests are conducted on the test bench and the verification tests are also fulfilled on operating vessels. The main performance data are as follows: oil injection pressure about 3.0 MPa, oil injection timing precision 0.1 ms, oil injection duration 15 °CA or less. The oil injection concentrates onto the piston rings pack to ensure the good lubrication and neutralization, and the oil injection frequency is regulated according to engine load, the sulphur content in fuel, total base number of cylinder oil, cylinder liner running-in condition and so on. This results in the cylinder oil consumption rate falling approximately 25% compared with that of the conventional mechanical lubrication system. As a retrofit on vessels in service, the lubrication system has been fitted more than 120 main engines and has a payback period of less than 2 years.
Original languageEnglish
Pages (from-to)986-1000
Number of pages15
JournalInternational Journal of Engine Research
Volume20
Issue number8-9
Early online date8 Jan 2019
DOIs
Publication statusPublished - 1 Oct 2019

Keywords

  • cylinder lubrication
  • two-stroke diesel engine
  • cylinder lube oil
  • electronic control
  • oil-saving
  • emission reduction

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