Piston for a thermal regenerated engine

An internal combustion engine having a piston assembly reciprocally moveable within a combustion cylinder, said internal combustion engine having a predefined cycle including a combustion stroke creating a heat and an intake stroke being operatively positioned before said combustion stroke, said piston assembly having a piston head defining a top surface having an outer wall extending therefrom and an underside surface being spaced from said top surface, said internal combustion engine comprising:

• a recessed portion being positioned in said piston head and forming a bottom surface being interposed said top surface and said underside surface;
• a regeneration member being attached in said recessed portion, said regeneration member having a porous structure being adapted to absorb said heat from said combustion stroke and to release said heat during said intake stroke, prior to another combustion stroke of said internal combustion engine;
• and
• a cavity being formed between said regeneration member and said bottom surface of said recessed portion.

A method for operating an internal combustion engine, said internal combustion engine having a combustion cylinder, a predefined cycle including, an intake stroke and combustion stroke, comprising the steps of:

• providing a regeneration member within a piston assembly;
• forming a cavity within said piston assembly;
• providing an intake air to said combustion cylinder during said intake stroke;
• pushing said intake air through said regeneration member into said cavity;
• introducing a fuel into said cavity;
• mixing said fuel and said intake air within said cavity;
• igniting said mixed fuel and intake air;
• creating a heat during said combustion stroke;
• and
• absorbing said heat with said regeneration member.