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.
Measurement of Oil Film Pressure in the Main Bearings of an Operating Engine Using Thin-Film Sensors
Sae Int. J. Engines
SAE World Congress & Exhibition ; 2008
Sae International Journal of Engines ; 1 , 1 ; 352-358
14.04.2008
7 pages
Aufsatz (Konferenz)
Englisch
Measurement of Oil Film Pressure in the Main Bearings of an Operating Engine Using Thin-Film Sensors
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