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US 2014/0190441 A1Published application
Valve seat insert
AssigneeFord Global Technologies, LLC
InventorsJim Chern, Chong Hsi Jack Chen, Minghui Chien, Scott Michael DeRaad
Life of this patent
Estimating the term…
Abstract
Embodiments may provide a valve seat insert including a valve seat face. A circumferential contact surface for contacting a cylinder head may be located radially outside and at least partially axially offset from the valve seat face. A discontinuity may be located radially between the valve seat face and the cylinder head and at least partially axially aligned with the valve seat face.
Claims20
A valve seat insert, comprising:
- a valve seat face;
- a circumferential contact surface shaped to contact a cylinder head located radially outside the valve seat face;
- and
- a gap radially between the valve seat face and the circumferential contact surface and at least partially axially aligned with the valve seat face, the gap centrally located along an annular outward surface that extends radially between the circumferential contact surface to the valve seat face.
1 more element
A valve seat insert, comprising:
- an annular-shaped body, the body having a peripheral side-wall and an annular outward surface, the outward surface having at least an inwardly angled inner surface, and an outer surface perpendicular to a central axis of the body, the outer surface including a gap that is spaced away and does not intersect the inwardly angled inner surface, and which is axially aligned with a valve seat face.
A valve seat insert, comprising:
- an outer surface having a substantially cylindrical portion configured to fit within and to make contact with a counterbore within a cylinder head and a frusto-conical portion configured to be spaced apart from the counterbore, the frusto-conical portion positioned between a gap and the outer surface.
(canceled)
A valve seat arrangement comprising:
- a counterbore in a cylinder head having an inner surface;
- a valve seat insert fitted into the counterbore having an outer surface, the outer surface including:
- a first portion contacting the counterbore inner surface, and
- a second portion spaced from the counterbore inner surface;
- and
- a valve seat face radially inside the valve seat insert outer surface, and axially at least partially aligned with the valve seat insert second portion;
- and
- a gap located along a surface extending from the valve seat face to the second portion spaced from the counterbore inner surface.
5 more elements
Dependencies are inferred from the claim text.