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

Claim 15:
16. An engine valve comprising:
a body of revolution, defining an axis of revolution, a radial direction perpendicular to the axis of revolution, and a circumferential direction about the axis of revolution,
the body of revolution including a stem, a head comprising an outer lip surface, a seating surface extending radially and axially inwardly from the outer lip surface toward the stem, and a combustion surface extending from the outer lip surface on the opposite side of the head as compared to the seating surface; and
wherein the combustion surface includes a first concave arcuate surface centered on the axis of revolution at a trough point, the first concave arcuate surface extending circumferentially about the axis of revolution, at least partially forming a dimple, a conical surface or a planar surface extending radially away from the first concave arcuate surface, and a convex transitional surface connecting the conical surface or the planar surface to the first concave arcuate surface, and the combustion surface includes a first convex arcuate surface defining at least partially an axial extremity of the body of revolution.