Patent ID: 11319867

Abstract:
A piston crown for a piston of an internal combustion engine, the piston crown comprising an annular surface at a first end of the piston crown; and a recessed piston bowl. The piston bowl comprises: a raised floor in the center of the piston bowl; an arcuate surface located radially outward relative to the raised floor; and a lip chamfer surface extending from the arcuate surface to the annular surface. A radially inmost portion of the lip chamfer surface is radially inside the outermost portion of the arcuate surface. The radial distance between the center axis and the innermost edge of the annular surface is between 2.3 and 3.2 time the bowl height. The acute angle between a line extending in the radial direction and a line tangent to the arcuate surface closest to the first end of the piston crown is between 40 and 80 degrees.