Valve assembly arrangement for an injection valve and injection valve
AssigneeContinental Automotive GmbH
InventorMauro Grandi
Life of this patent
Estimating the term…
Abstract
A valve assembly arrangement for an injection valve may have a central longitudinal axis, a valve assembly of the inward opening type, and a valve assembly of the outward opening type, wherein the valve assembly of the outward opening type is axially arranged adjacent and fixedly coupled to the valve assembly of the inward opening type such that the valve assembly of the inward opening type is operable to inject fluid into the valve assembly of the outward opening type for increasing a fluid pressure in the valve assembly of the outward opening type to open the valve assembly of the outward opening type to enable dispensing of the fluid from the valve assembly arrangement.
Claims16
A valve assembly arrangement for an injection valve, the valve assembly arrangement comprising:
- a central longitudinal axis running from a fluid inlet to a fluid outlet in a fluid flow direction,
- a first valve needle disposed in a first valve cavity, the first valve needle opening inwardly toward the fluid inlet, and
- a second valve needle disposed in a second valve cavity, the second valve needle opening outwardly toward the fluid outlet,
- wherein the second valve needle is arranged downstream of the first valve needle in the fluid flow direction along the central longitudinal axis;
- wherein opening the first valve needle injects fluid into the second valve cavity by moving the first valve needle away from the second valve needle toward the fluid inlet along the central longitudinal axis for increasing a fluid pressure in the second valve cavity, and
- opening the second valve needle dispenses the fluid from the valve assembly arrangement when the second valve needle moves toward the fluid outlet away from the inward opening valve assembly along the central longitudinal axis.
An injection valve comprising:
- a valve assembly arrangement having a central longitudinal axis running from a fluid inlet to a fluid outlet in a fluid flow direction,
- a first valve needle disposed in a first cavity, the first valve needle opening inwardly toward the fluid inlet, and
- a second valve needle disposed in a second cavity, the second valve needle opening outwardly toward the fluid outlet,
- wherein the second valve needle is axially arranged downstream of the first valve needle in the fluid flow direction along the central longitudinal axis such that opening the first valve needle injects fluid into the second cavity by moving the first valve needle away from the second valve needle toward the fluid inlet along the central longitudinal axis for increasing a fluid pressure in the second cavity, and
- opening the second valve needle dispenses the fluid from the injection valve when the second valve needle moves away from the inwardly opening valve assembly toward the fluid outlet along the central longitudinal axis.
Dependencies are inferred from the claim text.