Abstract
Keywords:
Oil Jet, Check valve, Nozzle, CFD(Computational Fluid Dynamics)
Abstract
The internal environment of an automotive engine is very severe. A piston is exposed to combustion gas of over 2000 and is shocked by high pressure at the time of explosion. Furthermore strong friction occurs by high speed motion. A study cooling the piston of an engine is needed because the cooling and lubrication of the piston has an effect on the life and efficiency of engine directly. The previous oil jet system cooled only the bottom of the piston. In order to improve the cooling efficiency, the oil gallery is made in the piston, and oil flows into the gallery. The value of oil flow rate into the gallery is important. Consequently, the purpose of this study is the investigation of fluid flow characteristics of oil jet and flow rate into the oil gallery.