Vaned valve for exhaust gas recirculation line
AssigneeVolvo Truck Corporation
InventorsJian Li, John Lowe
Life of this patent
Estimating the term…
Abstract
A valve for m exhaust gas recirculation Mae in an engine includes a first barrel connectable to a first group of cylinders, a second barrel connectable to a second group of cylinders, and a center barrel between the first and second barrels and connectable to an intake of the engine, A poppet valve with two valve heads mounted on a valve stem is provided to open and close openings between the first and second barrels, with one of the valve beads of the poppet valve opening into the center barrel Vanes are provided in the center barrel to direct flow from the opening by the valve bead that opens into the center barrel toward the outlet opening.
Claims20
A valve for an exhaust gas recirculation line in an engine, comprising:
- a first barrel having an inlet end for receiving exhaust from a first group of one or more cylinders;
- a second barrel having an inlet end for receiving exhaust from a second group of one or more cylinders;
- a center barrel disposed between the first barrel and the second barrel and having an outlet opening for directing exhaust gas toward an intake of the engine, the first barrel and the center barrel being adapted to be in fluid communication through a first inlet opening, and the second barrel and the center barrel being adapted to be in fluid communication through a second inlet opening;
- and
- a poppet valve comprising a stem and a first valve head and a second valve head mounted on the stem, a first valve seat against which the first valve head is arranged to be seated in the first barrel around the first inlet opening, and a second valve seat against which the second valve head is arranged to be seated in the center barrel around the second inlet opening, the poppet valve being movable between a closed position in which the first valve head is seated against the first valve seat and the second valve head is seated against the second valve seat and an open position in which the first valve head is moved in the first barrel away from the first valve seat and the second valve head is moved in the center barrel away from the second valve seat,
- wherein the center barrel includes one or more vanes arranged to direct flow from the second inlet opening toward the outlet opening.
A valve, comprising:
- a valve barrel having an outlet opening for directing fluid out of the valve barrel, a first inlet opening in a first wall of the valve barrel and a second inlet opening in a second wall of the valve barrel, central axes of the first inlet opening and the second inlet opening being substantially perpendicular to a central axis of the outlet opening;
- and
- a poppet valve comprising a stem and a first valve head and a second valve head mounted on the stem, a first valve seat against which the first valve head is arranged to be seated outside the valve barrel around the first inlet opening, and a second valve seat against which the second valve head is arranged to be seated in the valve barrel around the second inlet opening, the poppet valve being movable between a closed position in which the first valve head is seated against the first valve seat and the second valve head is sealed against the second valve seat and an open position in which the first valve head is moved outside of the valve barrel away from the first valve seat and the second valve head is moved in the valve barrel away from the second valve seat,
- wherein the valve barrel includes one or more vanes arranged to direct flow from the second inlet opening toward the outlet opening.
Dependencies are inferred from the claim text.