PISTON FOR ENGINE

摘要

An engine piston is disclosed. The disclosed engine piston has a polyamide-imide resin formed on the surface of a crown unit of the upper surface and has an aerogel dispersed in the polyamide-imide resin and has an insulation coating layer having 0.60 W/m of thermal conductivity. According to embodiments of the present invention, the insulation coating layer is applied to the upper surface (crown unit) in order to reduce thermal energy discharged to the outside to improve efficiency of an internal combustion engine and fuel efficiency of a vehicle.