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

    Research output: Contribution to journalArticleScientificpeer-review

    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 -