Intake valve fairing for a cylinder head of an engine
AssigneeFord Global Technologies, LLC
InventorsJohn Christopher Riegger, Jeffrey D. Fluharty, Philip Damian Cierpial, Abhijyoth Vempati
Life of this patent
Estimating the term…
Abstract
An engine has a cylinder head defining an intake port with a roof defining first and second valve guide bores upstream of first and second siamesed intake valve seats for a cylinder. The head has first and second asymmetric fairings extending outwardly from the roof and positioned directly upstream of respective bores. Each fairing has an inner wall intersecting an outer wall along an upstream edge and an inclined planar roof wall extending between the inner and outer walls. A method of forming the cylinder head and engine is also provided by milling the fairings from a roof preform formed with the intake port of the head.
Claims18
An engine comprising:
- a head defining an intake port with a roof defining first and second valve guide bores upstream of first and second siamesed intake valve seats for a cylinder;
- and
- first and second fairings extending outwardly from the roof and positioned directly upstream of respective bores, each fairing with:
- an inner wall intersecting an outer wall along an upstream edge, a downstream guide wall intersecting the inner and outer walls and positioned upstream of the associated bore, and an inclined planar roof wall extending between the inner and outer walls and the guide wall, wherein the roof wall is inclined towards the associated inner wall of each respective fairing.
A cylinder head comprising:
- a member defining an intake port extending from an intake manifold mounting flange to first and second intake siamesed intake valve ports separated by a valve bridge, a roof of the intake port defining first and second v-shaped fairings upstream of and directly adjacent to first and second valve guide bores;
- wherein each fairing has a planar inner wall and a planar outer wall extending outwardly from an adjacent surface of the roof, the inner and outer walls intersecting along an upstream edge of each fairing, a length of the outer wall being greater than a length of the inner wall for each fairing, the inner walls of the first and second fairings facing one another;
- wherein each fairing has a downstream guide wall positioned upstream of the associated bore, extending outwardly from the adjacent roofsurface, and extending between and intersecting the inner and outer side walls, the guide wall shaped to be concentric with the associated bore;
- wherein each fairing has a planar roof wall extending between the inner and outer side walls and the guide wall, each roof wall inclined towards the upstream edge of the associated fairing, and each roof wall inclined towards the inner wall of the associated fairing;
- and
- wherein each fairing is asymmetric.
An engine comprising:
- a head defining first and second fairings extending outwardly from a roof of an intake port for a cylinder, the first and second fairings positioned entirely upstream of first and second valve guide bores associated with first and second siamesed intake valve seats, each fairing having a roof wall contained within an inclined plane and extending between inner and outer walls, the inner and outer walls intersecting along an upstream edge;
- wherein the roof wall of each respective fairing is inclined towards the associated upstream edge and towards the associated inner wall.
Dependencies are inferred from the claim text.