Abstract: A piston for use with an internal combustion engine is disclosed in one embodiment of the present invention as including a crown having an exhaust valve area, an intake valve area, and means for moving exhaust toward the exhaust valve area. The exhaust moving means includes means for homogenizing the air/fuel mixture. The homogenizing means may also include means for creating eddies within the air/fuel mixture. In addition, the piston may include means for concentrating the air/fuel mixture toward the area of ignition. In one presently preferred embodiment, the structure used to accomplish the invention includes a raised portion formed on the crown of the piston. The raised portion increases in height from the center of the crown toward the perimeter of the crown. Moreover, the raised portion also has an arcuate shape declining in height along the arcuate shape. The presently preferred raised portion includes a plurality of dimples formed therein for creating eddies within the air/fuel mixture.