Abstract
| Original language | English |
|---|---|
| Pages (from-to) | 47-54 |
| Number of pages | 8 |
| Journal | Tribology Letters |
| Volume | 56 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 2014 |
| MoE publication type | A1 Journal article-refereed |
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Keywords
- diesel engines
- tribology
- journal bearing
- fibre optic sensors
- oil film pressure
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Fibre Optic Sensors for Long-Term Monitoring of Oil Film Pressure in Diesel Engine Main Bearing. / Kapulainen, Markku (Corresponding Author); Ronkainen, Helena; Hokkanen, Ari; Stuns, Ingmar; Varjus, Simo; Nyyssönen, Sami; Turunen, Raimo; Halme, Jari.
In: Tribology Letters, Vol. 56, No. 1, 2014, p. 47-54.Research output: Contribution to journal › Article › Scientific › peer-review
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 -