Patent ID: 11885246
Assignee: CATERPILLAR INC.
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F  B | IPC B  F

Claim 0:
1. An engine head assembly for an internal combustion engine comprising:
an engine head having a fluid conduit formed therein; and
an engine valve including a stem, a head comprising an outer lip surface, a seating surface interposed between the stem and the outer lip surface, and a combustion surface extending from the outer lip surface on the opposite side of the head as compared to the seating surface;
wherein the combustion surface includes a first convex arcuate surface spaced away from the outer lip surface, at least partially forming a raised ring, and a first concave arcuate surface spaced away from the outer lip surface, at least partially forming a dimple, and the engine valve includes a body of revolution, defining an axis of revolution, and wherein the raised ring defines a lower axial extremity of the engine valve and the dimple defines an upper axial extremity of the combustion surface.