We developed a technique to measure oil film pressure distribution in engine main bearings using thin-film pressure sensors. The sensor is 7\u03bcm 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 MoS 2 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.
| SAE International | |
|---|---|
| Product Category | Standards and Technical Documents |
| Product Number | 2008-01-0438 |
| Product Name | Measurement of Oil Film Pressure in the Main Bearings of an Operating Engine Using Thin-Film Sensors |
