Valve assembly with a guide element
AssigneeContinental Automotive GmbH
InventorIvano Izzo
Life of this patent
Estimating the term…
Abstract
A valve assembly for a fluid injection valve contains a hollow valve body which hydraulically connects a fluid inlet to an injection orifice and has a longitudinal axis. A valve needle is received in the valve body in an axially displaceable fashion for sealing the injection orifice in a closing position. An electromagnetic actuator assembly is provided for displacing the valve needle away from the closing position, the actuator assembly containing a movable armature and a pole piece which is positionally fixed relative to the valve body. A guide element is positionally fixed relative to the pole piece, has a first guide surface for axially guiding the armature and a second guide surface for axially guiding the valve needle.
Claims19
A valve assembly for a fluid injection valve, the valve assembly comprising:
- a fluid inlet;
- an injection orifice;
- a hollow valve body hydraulically connecting said fluid inlet to said injection orifice and having a longitudinal axis;
- a valve needle received in said valve body in an axially displaceable fashion for sealing said injection orifice in a closing position and unsealing said injection orifice in other positions;
- an electromagnetic actuator assembly for displacing said valve needle away from the closing position, said electromagnetic actuator assembly having a movable armature and a pole piece being positionally fixed relative to said hollow valve body;
- and
- a guide element positionally fixed relative to said pole piece, said guide element having a first guide surface for axially guiding said movable armature and a second guide surface for axially guiding said valve needle;
- said guide element being in a shape of a sleeve having an outer circumferential surface and an inner circumferential surface, said first and second guide surfaces being comprised by said outer circumferential surface and said inner circumferential surface of said sleeve, respectively.
A fluid injection valve, comprising:
- a valve assembly, said valve assembly including:
- a fluid inlet;
- an injection orifice;
- a hollow valve body hydraulically connecting said fluid inlet to said injection orifice and having a longitudinal axis;
- a valve needle received in said hollow valve body in an axially displaceable fashion for sealing said injection orifice in a closing position and unsealing said injection orifice in other positions;
- an electromagnetic actuator assembly for displacing said valve needle away from the closing position, said electromagnetic actuator assembly having a movable armature and a pole piece which is positionally fixed relative to said hollow valve body;
- and
- a guide element positionally fixed relative to said pole piece, said guide element having a first guide surface for axially guiding said movable armature and a second guide surface for axially guiding said valve needle;
- said guide element being in a shape of a sleeve having an outer circumferential surface and an inner circumferential surface, said first and second guide surfaces being comprised by said outer circumferential surface and said inner circumferential surface of said sleeve, respectively.
A valve assembly for a fluid injection valve, the valve assembly comprising:
- a fluid inlet;
- an injection orifice;
- a hollow valve body hydraulically connecting said fluid inlet to said injection orifice and having a longitudinal axis;
- a valve needle received in said valve body in an axially displaceable fashion for sealing said injection orifice in a closing position and unsealing said injection orifice in other positions;
- an electromagnetic actuator assembly for displacing said valve needle away from the closing position, said electromagnetic actuator assembly having a movable armature and a pole piece being positionally fixed relative to said hollow valve body;
- and
- a guide element positionally fixed relative to said pole piece, said guide element having a first guide surface for axially guiding said movable armature and a second guide surface for axially guiding said valve needle;
- wherein said pole piece has a central axial opening formed therein and in which said guide element is partially disposed and from which said guide element projects.
Dependencies are inferred from the claim text.