Patent ID: 9638131
Date: 2017-05-02
CPC Classifications: F02B,F02F,F02M,Y02T

Claim:
1. An internal combustion engine, comprising: a cylinder case forming a cylinder bore, the cylinder bore having a centerline and an inner bore surface that at least partially defines a variable volume; a piston slidably and sealably disposed within the cylinder bore, the piston forming a crown surface and having a topmost ring seal groove; wherein a region having a generally hollow cylindrical shape is defined between the piston and the cylinder bore in a radial direction with respect to the centerline, the region having a mouth opening with an annular shape that surrounds the crown surface and is defined between the piston and the cylinder bore; a cylinder head disposed to cover an open end of the cylinder bore such that the variable volume is defined within the cylinder bore between the cylinder head and the piston, the cylinder head forming a flame deck in fluid contact with the variable volume; a deflector structure disposed along a portion of the inner bore surface adjacent the flame deck, the deflector structure disposed between the topmost ring seal groove and the flame deck in an axial direction with respect to the centerline when the piston is disposed at a top dead center (TDC) position within the cylinder bore in the axial direction; wherein the deflector structure includes a concave depression formed in a body portion of the deflector structure, the concave depression defining a space disposed outwardly in the radial direction with respect to the mouth opening; wherein the deflector structure extends partially around a periphery of the cylinder bore along one or more depressed segments; and wherein the deflector structure comprises a plurality of segments, each of the plurality of segments being angularly aligned with a fuel spray provided in the variable volume by an injector having a spray orifice.