Valve assembly with a guide element
AssigneeContinental Automotive GmbH
InventorIVANO IZZO
Life of this patent
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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.
Claims11
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.
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.
Dependencies are inferred from the claim text.