Injector apparatus
AssigneeRklab AG
InventorsRiccardo Meldolesi, Ron Kuckler, Daniel Eastwood, Mike Cranfield, Mark Clements, Anthony Perkins
Life of this patent
Estimating the term…
Abstract
An injector nozzle having a first part having a stem and a flange, the flange having a flange surface, a body including a wall defining a hole, an annular nozzle ring having a first surface and a second surface wherein the first surface and/or the flange surface include a plurality of grooves, the stem being received in the hole, the first part being secured to the body to secure the nozzle ring in place such that the first surface engages the flange surface, the second surface engages the body, and the plurality of grooves define a plurality of injector holes.
Claims20
An injector apparatus for injecting a fluid under pressure into an associated volume, the injector apparatus including:
- a body with a first cylinder,
- a first piston moveable within the first cylinder, thereby defining a control volume,
- a second piston moveable relative to a second cylinder thereby defining an injector volume,
- an injector nozzle,
- the first and second pistons being configured such that movement of the first piston in a first direction under action of pressure in the associated volume against the first piston causes a reduction in the control volume and a reduction in the injector volume,
- the apparatus being configured to cause fluid within the injector volume to be injected under pressure through the nozzle into the associated volume when the first piston moves in the first direction,
- the injector nozzle including a check valve and a plurality of injector holes, a sac volume being defined between ends of the injector holes proximate the check valve and the check valve, the check valve having a body defining a valve seat and a valve defining a valve surface for engagement with the valve seat to close the check valve, the valve further including a piston movable within a bore of the body configured to draw fluid into the bore from the sac volume upon closing of the check valve.
An injector apparatus for injecting a fluid under pressure into an associated volume, the injector apparatus including:
- a body with a first cylinder,
- a first piston moveable within the first cylinder, thereby defining a control volume,
- a second piston moveable relative to a second cylinder thereby defining an injector volume,
- an injector nozzle,
- the first and second pistons being configured such that movement of the first piston in a first direction under the action of pressure in the associated volume against the first piston causes a reduction in the control volume and a reduction in the injector volume,
- the apparatus being configured to cause fluid within the injector volume to be injected under pressure through the nozzle into the associated volume when the first piston moves in the first direction,
- the apparatus including a valve associated with the injector volume to de-pressurize the injector volume and thereby stop injection of fluid into the associated volume.
An injector apparatus as defined in 7 wherein the valve element includes a guide wall and second piston includes a guide, the guide wall being slideable within the guide.
An injector apparatus for injecting a fluid under pressure into an associated volume, the injector apparatus including:
- a body with a first cylinder,
- a first piston moveable within the first cylinder, thereby defining a control volume,
- a second piston moveable within a second cylinder thereby defining an injector volume,
- an injector nozzle,
- the first and second pistons being configured such that movement of the first piston in a first direction under action of pressure in the associated volume against the first piston causes a reduction in the control volume and a reduction in the injector volume,
- the apparatus being configured to cause fluid within the injector volume to be injected under pressure through the nozzle into the associated volume when the first piston moves in the first direction,
- wherein a first part of the second piston is moveable within the second cylinder and a second part of the second piston engages a correspondingly-shaped part of the injector apparatus so as to allow alignment of the first part of the second piston with the second cylinder when movement of the first piston in the first direction causes a reduction in the injector volume.
Dependencies are inferred from the claim text.