Trend analysis, though not a new concept, has only recently been applied methodically. The Author explains the concept and its advantages over preventive maintenance, and describes how it can be applied to main and auxiliary Diesel engines. The method described is "manual", but the same principles can be applied in a computerised and automated system. The various pressures, temperatures, consumptions and other data that have to be recorded for the trend analysis of these engines are listed, and the construction of simple but effective graphs in which the data are plotted against operating hours is described. The principles used in the interpretation of such graphs are explained under the headings:- Performance of Cylinder Unit; Bearing Wear; State of Combustion; Load Balance between Cylinders; Lube Oil Pressure; Firing Pressure. It is mentioned that a good practical and theoretical knowledge of Diesel engines is essential in order to understand and diagnose the anomalies that arise. Time and effort spent in trend analysis will be well repaid, and the concept can be used to optimise the performance as well as the maintenance of machinery. Examples of its applications in a trouble-shooting role, to a distilling plant and an air- conditioning plant are also described.

  • Supplemental Notes:
    • Mar. Eng. Rev., 1983, p. 5 (Feb.) (3 pp., 3 graphs)
  • Authors:
    • Sair, K F
  • Publication Date: 1983


  • English

Subject/Index Terms

  • Subject Areas: Marine Transportation;

Filing Info

  • Accession Number: 00684478
  • Record Type: Publication
  • Source Agency: British Maritime Technology
  • Files: TRIS
  • Created Date: Aug 14 1995 12:00AM