Fibre Optic Sensors for Long-Term Monitoring of Oil Film Pressure in Diesel Engine Main Bearing

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5 Citations (Scopus)

Abstract

The oil film pressure is one of the key parameters in journal bearings influencing the performance of the bearings. A fibre optic sensor was developed for online determination of actual oil film pressure under load without disturbing the actual tribological contact. Four optical sensors were integrated in a hydrodynamic journal bearing of a Wärtsilä Vasa 4R32 LN E medium-speed diesel engine with four cylinders, maximum power of 1,640 kW and rotating speed on 750 rpm. Online engine tests were carried out with different loads to study the sensor operation in real operating conditions. The engine tests were repeated six times over 4 years of operation reaching up to thousand hours of the engine use. The results showed differences in bearing pressure depending on the position of the sensor and on the operating cycle of the cylinders. The pressure peaks of all four cylinder work cycles could be identified in the measured pressure curves, and the pressure variations within the pressure curves fit well to the diesel engine's work cycle and mass forces. The sensors had good repeatability over the whole test period.
Original languageEnglish
Pages (from-to)47-54
Number of pages8
JournalTribology Letters
Volume56
Issue number1
DOIs
Publication statusPublished - 2014
MoE publication typeA1 Journal article-refereed

Fingerprint

Bearings (structural)
diesel engines
Fiber optic sensors
Diesel engines
fiber optics
Oils
oils
Monitoring
sensors
Engine cylinders
engine tests
journal bearings
Journal bearings
Engines
cycles
Sensors
Optical sensors
optical measuring instruments
curves
engines

Keywords

  • diesel engines
  • tribology
  • journal bearing
  • fibre optic sensors
  • oil film pressure

Cite this

@article{0115e3fa0d0845e5b34e3b5f4b259b2d,
title = "Fibre Optic Sensors for Long-Term Monitoring of Oil Film Pressure in Diesel Engine Main Bearing",
abstract = "The oil film pressure is one of the key parameters in journal bearings influencing the performance of the bearings. A fibre optic sensor was developed for online determination of actual oil film pressure under load without disturbing the actual tribological contact. Four optical sensors were integrated in a hydrodynamic journal bearing of a W{\"a}rtsil{\"a} Vasa 4R32 LN E medium-speed diesel engine with four cylinders, maximum power of 1,640 kW and rotating speed on 750 rpm. Online engine tests were carried out with different loads to study the sensor operation in real operating conditions. The engine tests were repeated six times over 4 years of operation reaching up to thousand hours of the engine use. The results showed differences in bearing pressure depending on the position of the sensor and on the operating cycle of the cylinders. The pressure peaks of all four cylinder work cycles could be identified in the measured pressure curves, and the pressure variations within the pressure curves fit well to the diesel engine's work cycle and mass forces. The sensors had good repeatability over the whole test period.",
keywords = "diesel engines, tribology, journal bearing, fibre optic sensors, oil film pressure",
author = "Markku Kapulainen and Helena Ronkainen and Ari Hokkanen and Ingmar Stuns and Simo Varjus and Sami Nyyss{\"o}nen and Raimo Turunen and Jari Halme",
year = "2014",
doi = "10.1007/s11249-014-0373-5",
language = "English",
volume = "56",
pages = "47--54",
journal = "Tribology Letters",
issn = "1023-8883",
publisher = "Springer",
number = "1",

}

TY - JOUR

T1 - Fibre Optic Sensors for Long-Term Monitoring of Oil Film Pressure in Diesel Engine Main Bearing

AU - Kapulainen, Markku

AU - Ronkainen, Helena

AU - Hokkanen, Ari

AU - Stuns, Ingmar

AU - Varjus, Simo

AU - Nyyssönen, Sami

AU - Turunen, Raimo

AU - Halme, Jari

PY - 2014

Y1 - 2014

N2 - The oil film pressure is one of the key parameters in journal bearings influencing the performance of the bearings. A fibre optic sensor was developed for online determination of actual oil film pressure under load without disturbing the actual tribological contact. Four optical sensors were integrated in a hydrodynamic journal bearing of a Wärtsilä Vasa 4R32 LN E medium-speed diesel engine with four cylinders, maximum power of 1,640 kW and rotating speed on 750 rpm. Online engine tests were carried out with different loads to study the sensor operation in real operating conditions. The engine tests were repeated six times over 4 years of operation reaching up to thousand hours of the engine use. The results showed differences in bearing pressure depending on the position of the sensor and on the operating cycle of the cylinders. The pressure peaks of all four cylinder work cycles could be identified in the measured pressure curves, and the pressure variations within the pressure curves fit well to the diesel engine's work cycle and mass forces. The sensors had good repeatability over the whole test period.

AB - The oil film pressure is one of the key parameters in journal bearings influencing the performance of the bearings. A fibre optic sensor was developed for online determination of actual oil film pressure under load without disturbing the actual tribological contact. Four optical sensors were integrated in a hydrodynamic journal bearing of a Wärtsilä Vasa 4R32 LN E medium-speed diesel engine with four cylinders, maximum power of 1,640 kW and rotating speed on 750 rpm. Online engine tests were carried out with different loads to study the sensor operation in real operating conditions. The engine tests were repeated six times over 4 years of operation reaching up to thousand hours of the engine use. The results showed differences in bearing pressure depending on the position of the sensor and on the operating cycle of the cylinders. The pressure peaks of all four cylinder work cycles could be identified in the measured pressure curves, and the pressure variations within the pressure curves fit well to the diesel engine's work cycle and mass forces. The sensors had good repeatability over the whole test period.

KW - diesel engines

KW - tribology

KW - journal bearing

KW - fibre optic sensors

KW - oil film pressure

U2 - 10.1007/s11249-014-0373-5

DO - 10.1007/s11249-014-0373-5

M3 - Article

VL - 56

SP - 47

EP - 54

JO - Tribology Letters

JF - Tribology Letters

SN - 1023-8883

IS - 1

ER -