Electromagnetic Actuator Assembly For A Fluid Injection Valve And Method For Operating A Fluid Injection Valve
AssigneeContinental Automotive GmbH
InventorMarco Maragliulo
Life of this patent
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Abstract
An electromagnetic actuator assembly for a fluid injection valve includes a first coil and a second coil, which are configured for moving an armature, and an electrical connection circuit for connecting the first and second coils to a power supply. The electrical connection circuit is configured to energize the first coil without energizing the second coil in a first operating mode of the actuator assembly and to energize both the first coil and the second coil in a second operating mode of the actuator assembly.
Claims11
An electromagnetic actuator assembly for a fluid injection valve comprising:
- a first coil and a second coil that are configured to move an armature,
- an electrical connection circuit configured to connects the first and second coils to a power supply, and
- a first external electrical connection and a second external electrical connection that are configured to connect the electrical connection circuit to the power supply,
- wherein the actuator assembly is switchable between:
- a first operating mode in which a direct current flows from the first to the second external electrical connection, and
- a second operating mode in which a direct current flows from the second to the first external electrical connection, and
- wherein the electrical connection circuit is configured to:
- energize the first coil without energizing the second coil in the first operating mode of the actuator assembly, and
- energize both the first coil and the second coil in the second operating mode of the actuator assembly.
(canceled)
A method for operating fluid injection valve including an electromagnetic actuator assembly having a first coil and a second coil that are configured to move an armature, an electrical connection circuit configured to connects the first and second coils to a power supply, and a first external electrical connection and a second external electrical connection that are configured to connect the electrical connection circuit to the power supply, wherein there method comprises:
- determining a property of a fluid to be dispensed by the fluid injection valve,
- comparing the determined fluid property with a predetermined threshold,
- based on the results of the comparison, switching an operation of the fluid injection valve between a first operating mode and a second operating mode to dispense the fluid from the fluid injection valve, wherein switching the operating mode comprises:
- when the determined fluid property is smaller than the predeterminded threshold according to the comparison, operating the fluid injection valve in the first operating mode by feeding the operating current to the electrical connection circuit via the first and second external electrical connections such that the operating current flows from the first to the second external electrical connection, and
- when the determined fluid property is larger than the predetermined threshold according to the comparison, operating the fluid injection valve in the second operating mode by feeding the operating current to the electrical connection circuit via the first and second external electrical connections such that the operating current flows from the second to the first external electrical connection.
A fluid injection valve, comprising:
- an armature;
- a valve needle mechanically coupled to the armature;
- and
- an electromagnetic actuator assembly comprising:
- a first coil and a second coil that are configured to move the armature to thereby move the valve needle,
- an electrical connection circuit configured to connects the first and second coils to a power supply, and
- a first external electrical connection and a second external electrical connection that are configured to connect the electrical connection circuit to the power supply,
- wherein the actuator assembly is switchable between:
- a first operating mode in which a direct current flows from the first to the second external electrical connection, and
- a second operating mode in which a direct current flows from the second to the first external electrical connection, and
- wherein the electrical connection circuit is configured to:
- energize the first coil without energizing the second coil in the first operating mode of the actuator assembly, and
- energize both the first coil and the second coil in the second operating mode of the actuator assembly.
Dependencies are inferred from the claim text.