Intake system for an internal combustion engine
AssigneeFord Global Technologies, LLC
InventorsTed Vincent Mull, Jr., Brian David Knotts
Life of this patent
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Abstract
An engine includes a cylinder head having a first face defining an entrance to an intake port, and an intake manifold having a second face defining an outlet from a runner. The first and second faces mate to fluidly connect the entrance and the outlet, and an area mismatch or offset exists between the entrance and the outlet. A tongue is positioned into the intake port to extend over a floor of the intake port and has an area substantially equal to a difference between the entrance area and the outlet area. The tongue maintains in-charge motion and mixing of intake gases in-cylinder in the engine.
Claims19
An engine comprising:
- a cylinder head having a first face defining an entrance to an intake port;
- an intake manifold having a second face defining a runner outlet, the first and second faces mating to fluidly connect the entrance and outlet;
- and
- a tongue extending over a floor of the port from the second face to a tapered distal end and having an area substantially equal to an area difference between the entrance and outlet.
A method comprising:
- providing a cylinder head having a first face defining an entrance to an intake port;
- forming an intake manifold having a second face defining a runner outlet, the entrance area larger than the outlet area;
- and
- inserting a tongue along a floor of the intake port while connecting the first and second faces to fluidly connect the outlet with the entrance, the tongue sized to fill an offset created by an area mismatch between the outlet and the entrance.
An engine comprising:
- an intake manifold having a first face defining a runner outlet;
- a cylinder head having a second face defining an entrance to an intake port, the first and second faces mating to fluidly connect the entrance and outlet, the entrance area being 110-125% of the outlet area;
- and
- a tongue extending over a floor of the port and having an area substantially equal to an area difference between the entrance and outlet.
Dependencies are inferred from the claim text.