Abstract
Internal combustion engines have been required for further improvement of thermal efficiency, i.e. reduction of fuel consumption. While downsizing turbo engines are often mentioned as the trend in recent years, cylinder pressure has been increasing and engines are becoming compact and light weight. Because of this, the engine components have become narrower and thinner-walled, and local lubrication performance in sliding parts is continuously increasing due to high pressure and partial contact. 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. The optimization of the multi-layer form a film of the sensor shape and sensor film was performed in order to reduce the temperature sensitivity and the strain sensitivity is a measurement error of the oil film pressure.
