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Proportional hazards analysis of diesel engine failure data
Author(s) -
Jardine A. K. S.,
Ralston P.,
Reid N.,
Stafford J.
Publication year - 1989
Publication title -
quality and reliability engineering international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.913
H-Index - 62
eISSN - 1099-1638
pISSN - 0748-8017
DOI - 10.1002/qre.4680050305
Subject(s) - diesel engine , oil analysis , diesel fuel , engineering , failure rate , automotive engineering , reliability engineering , operations management , forensic engineering , petroleum engineering
Canadian Pacific Rail's diesel engines undergo scheduled major overhaul at intervals of approximately four years. Between these overhauls the condition of an engine is monitored by a series of physical tests and spectroanalysis carried out on samples of lubricating oil. At present the results of these tests are interpreted by the combination of skilled oil‐analyst technicians and an expert system. The success rate of this is over 70 per cent, where success is defined to mean that the oil‐analyst/expert system recommends that the engine should be scheduled for maintenance and it does indeed subsequently show evidence of an imminent failure. The purpose of the paper is to report on an examination of the method of proportional hazards modelling to determine whether or not PHM could improve on the accuracy of the oil‐analyst/expert system in determining the risk of failure of a diesel engine.