Gm Global Technolgoy Operations, Inc.

Michele Dematteis

Alberto Lorenzo Vassallo

Francesco Concetto Pesce

Fabio Numidi

Andrea Tripodi

A piston for an internal combustion engine includes a piston body having a generally planar crown and a sidewall extending from the crown. A stepped combustion bowl is recessed in the crown and includes an outer bowl recessed relative to the crown and defining a generally planar annular floor surface. The stepped combustion bowl further includes an inner bowl recessed relative to the outer bowl. The inner bowl includes a sidewall that slopes continually inwardly from the outer bowl to a floor surface of the inner bowl. A plurality of protruding lips extend from the sidewall toward a central axis of the piston body.

Growing community of inventors

Pinerolo, Italy

Michele Dematteis