PISTON FOR INTERNAL COMBUSTION ENGINE

摘要

PURPOSE: A piston for an internal combustion engine is provided to improve engine performance by increasing a combustion speed with improving mixing characteristic of air and fuels. CONSTITUTION: A piston for an internal combustion engine comprises a bowl(20) formed in the center of a piston head. The bowl comprises at least three projected portions(21) and connecting parts(22). The connecting parts connect neighboring projected portions. The bowl comprises three to five projected portions and the projected portions are placed with facing each other. The upper and lower diameters of the bowl are same, and the bowl comprises a vertical wall inside.