Fuel injection valve for an internal combustion engine
AssigneeContinental Automotive GmbH
InventorsStefano Filippi, Mauro Grandi, Francesco Lenzi, Valerio Polidori
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Abstract
A fuel injection valve includes a housing with a cavity, a valve needle, an actuator including a magnetic coil arranged in a coil casing, and an armature in the cavity. The housing includes a separation ring positioned between the armature and the coil casing and configured to lead the electromagnetic flux to the armature. The separation ring includes a first part and a second part. The first part is made of a first material and the second part is made of second material that differs from the first material. The first material and the second material are magnetic materials.
Claims20
A fuel injection valve for an internal combustion engine, comprising:
- a housing having a cavity that hydraulically connects a fluid inlet tube with a nozzle orifice,
- a valve needle movably positioned in the cavity to open and close the nozzle orifice,
- an actuator comprising a magnetic coil arranged in a coil casing and an armature movably positioned cavity and mechanically coupled to the valve needle to initiate a movement of the valve needle based on a magnetic flux initiated by the magnetic coil,
- wherein the housing comprises a separation ring positioned between the armature and the coil casing and configured to lead the electromagnetic flux to the armature,
- wherein the separation ring comprises a first part and a second part,
- wherein the first part is made of a first material and the second part is made of second material that differs from the first material, and
- wherein the first material and the second material are magnetic materials.
A fuel injection assembly for an internal combustion engine, the fuel injection assembly comprising:
- a plurality of fuel injection valves, each fuel injection valve comprising:
- a housing having a cavity that hydraulically connects a fluid inlet tube with a nozzle orifice,
- a valve needle movably positioned in the cavity to open and close the nozzle orifice,
- an actuator comprising a magnetic coil arranged in a coil casing and an armature movably positioned cavity and mechanically coupled to the valve needle to initiate a movement of the valve needle based on a magnetic flux initiated by the magnetic coil,
- wherein the housing comprises a separation ring positioned between the armature and the coil casing and configured to lead the electromagnetic flux to the armature,
- wherein the separation ring comprises a first part and a second part,
- wherein the first part is made of a first material and the second part is made of second material that differs from the first material, and
- wherein the first material and the second material are magnetic materials.
Dependencies are inferred from the claim text.