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Measurement of Oil-Film Pressure in Piston Skirt Using Multi-Layered Thin-Film Pressure Sensor
Published October 03, 2012 by Society of Automotive Engineers of Japan in Japan
In order to reduce mechanical friction loss, new technologies such as coating and surface texturing has been introduced. Generally, theoretical analysis are carried out at the engine development, however to improve theoretical calculation accuracy, properly modeling, appropriate calculation conditions and also the verification of the calculation results by the precise measuring method have been required. However, calculated results in sliding surface with deformation in engine operating condition have not yet been confirmed experimentally. In this study, measurement of oil-film pressure distribution using a thin-film sensor with multi-layer structure to measure just the oil-film pressure without deformation of the piston skirt and comparative verification of the theoretical calculations and experimental results were carried out.