We developed a technique to measure oil film pressure distribution in engine main bearings using thin-film pressure sensors. The sensor is 7μm in thickness, and is processed on the surface of an aluminum alloy bearing. In order to increase the durability of the sensor, a layer of MoS2 and polyamide-imide was coated on thin-film sensors. This technique was applied to a 1.4L common-rail diesel engine operated at a maximum speed of 4,500r/min with a 100Nm full load, and the oil film pressure was monitored while the engine was operating. The measured pressure was compared with calculations based on hydrodynamic lubrication (HL) theory.


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    Title :

    Measurement of Oil Film Pressure in the Main Bearings of an Operating Engine Using Thin-Film Sensors


    Additional title:

    Sae Int. J. Engines


    Contributors:

    Conference:

    SAE World Congress & Exhibition ; 2008


    Published in:

    Publication date :

    2008-04-14


    Size :

    7 pages




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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