Patent ID: 6360709
Filing Date: 2002-03-26
Classification: F02B,F02F,Y02T

Abstract:
A piston and cylinder assembly for modifying the air/fuel mixture near a spark plug in an internal combustion engine, comprising:a cylinder block having a cylinder with a diameter defined by a cylinder bore wall; a cylinder head enclosing one end of the cylinder and mounting the spark plug; a piston disposed within the cylinder for reciprocation relative the cylinder head; a combustion chamber formed of the volume between the cylinder bore wall, the piston, and the cylinder head, the combustion chamber being divided into an intake side and an exhaust side by a longitudinal center axis through the piston and cylinder assembly; and a crown of the piston including a pair of slopes converging toward a generally rectanguler raised peak for creating a combustion motion, the raised peak disposed offset from the longitudinal center axis on the exhaust side of the piston, the combustion motion being directed toward the exhaust side of the combustion chamber.