Publication detail

Contribution to prediction of soft and hard failure occurrence in combustion engine using oil tribo data

VALIŠ, D. ŽÁK, L.

Original Title

Contribution to prediction of soft and hard failure occurrence in combustion engine using oil tribo data

Type

journal article in Web of Science

Language

English

Original Abstract

When assessing technical systems, we apply different condition indicators. If we take into account indirect diagnostic indicators, lubricant seems to be a very good source of different information. Where the oil is part of a system, it is possible to get the information about the oil condition as well as the system itself. In this article we focus on the system of piston combustion engine and tribodiagnostic data. The indirect diagnostic information is the concentration level of contaminating particles in the oil. We observe specific particles of oil contamination-soot which is formed in the operation as a by-product during fuel combustion. The soot contaminates the oil significantly and the soot concentration shows under what conditions the system was operated. It also indicates that the system condition gradually deteriorates. We have a statistically very interesting set of data from the operation of heavy off-road vehicles. The recorded soot operation data depend on a few operation values: kilometres [km], days [day] and moto-hours [Mh]. Modelling a soft and a hard failure which might occur the moment the concentration reaches its critical value is performed with selected stochastic diffusion processes, namely the Wiener process with drift and the Ornstein-Uhlnbeck process. The main aim and contribution of our article is to estimate and study the distribution of the first hitting time of a critical threshold and to determine the moment when the soft and hard failure occurs in a vehicle. We also try to estimate the engine useful residual life. We are aware, however, that there are numerous possibilities of using these results.

Keywords

Degradation; Diffusion processes; Engine failures; Failure analysis; Maintenance; Reliability analysis; Residual life

Authors

VALIŠ, D.; ŽÁK, L.

Released

1. 12. 2017

Publisher

PERGAMON-ELSEVIER SCIENCE LTD, THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND

Location

Spojené království Velké Británie a Severního Irska

ISBN

1350-6307

Periodical

ENGINEERING FAILURE ANALYSIS

Year of study

82

Number

1

State

United Kingdom of Great Britain and Northern Ireland

Pages from

583

Pages to

598

Pages count

16

URL

https://www.sciencedirect.com/science/article/pii/S0301679X1930132X

BibTex

@article{BUT163675,
  author="David {Vališ} and Libor {Žák}",
  title="Contribution to prediction of soft and hard failure occurrence in combustion engine using oil tribo data",
  journal="ENGINEERING FAILURE ANALYSIS",
  year="2017",
  volume="82",
  number="1",
  pages="583--598",
  doi="10.1016/j.engfailanal.2017.04.018",
  issn="1350-6307",
  url="https://www.sciencedirect.com/science/article/pii/S0301679X1930132X"
}