Combustion chamber

Abstract

A combustion chamber assembly for use in a diesel engine includes a combustion chamber being defined in a crown of a piston, the combustion chamber having a center portion, the center portion being defined at least in part by a portion of a convex sphere to define a post, the sphere having a radius and an origin, the origin of the radius lying on a combustion chamber central axis and the combustion chamber further having an outwardly radially disposed bottom margin, the bottom margin being defined in part by a portion of a sphere, the sphere being concave and having an origin and a radius. The combustion chamber has more than two spherical surfaces having smooth annular transitions between adjacent spherical surfaces, the spherical surfaces including the spherical center portion and the spherical bottom margin. A piston and a method of forming a combustion chamber are further included.

Dependencies are inferred from the claim text.