High Durability Thin-Film Pressure Sensor Development for Engine Sliding Surface

抄録

In order to reduce CO2 emissions and fuel consumption, the reduction of mechanical friction loss is very important technologies. To reduce such friction loss, understanding the lubrication conditions of engine sliding surfaces are very important. In order to investigate their conditions and to validate the CAE (Computer aided engineering), the author has developed a thin-film pressure sensor for measuring oil-film pressure distributions in engine bearings, piston skirts, pinbosses. However, the lubrication condition of the engine has become strict year by year, and it became necessary to develop a high durability thin film pressure sensor. For deformation, we developed "Multi-layer type oil film pressure sensor". Also, with regard to durability, by optimizing DLC for thin film sensor, we have made it possible to accurately measure oil film pressure in the engine.