Permanent Magnet Electromagnetic Actuator for an Electronic Valve Actuation System of an Engine
First Claim
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1. A valve actuator for an internal combustion engine, comprising:
- a core having a wound coil located therein, the core further having at least one permanent magnet located at least partially within a space defined by the coil and positioned at an angle relative to a direction of movement of an armature; and
at least an air gap adjacent to the at least one permanent magnet and wherein the air gap is wholly contained in the core and configured to reduce flux leakage.
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Abstract
A valve actuator for an internal combustion engine, comprising of a core having a wound coil located therein, the core further having at least one permanent magnet located at least partially within a space defined by the coil and positioned at an angle relative to a direction of movement of an armature, and at least an air gap adjacent to the at least one permanent magnet and wherein the air gap is wholly contained in the core and configured to reduce flux leakage.
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Citations
20 Claims
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1. A valve actuator for an internal combustion engine, comprising:
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a core having a wound coil located therein, the core further having at least one permanent magnet located at least partially within a space defined by the coil and positioned at an angle relative to a direction of movement of an armature; and
at least an air gap adjacent to the at least one permanent magnet and wherein the air gap is wholly contained in the core and configured to reduce flux leakage. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A valve actuator for an internal combustion engine, comprising:
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a core;
a wound coil within the core; and
at least a first permanent magnet and a second permanent magnet within the core and at least partially surrounded by the coil, wherein the first permanent magnet and the second permanent magnet are angled relative to each other;
wherein at least the core and the first permanent magnet define a first air gap wholly interior an outer boundary of the core and wherein at least the core and the second permanent magnet define a second air gap wholly interior the outer boundary of the core. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16)
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17. A valve actuator for an internal combustion engine, comprising:
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a core;
a coil within the core;
an armature shaft extending longitudinally through the core, wherein the coil substantially surrounds at least a portion of the shaft in a plane orthogonal to a longitudinal axis of the shaft; and
a first permanent magnet within the core and inclined at an angle relative to the longitudinal axis of the shaft, wherein the coil substantially surrounds at least a portion of the first permanent magnet in a plane orthogonal to the longitudinal axis of the shaft;
wherein at least the core and the first permanent magnet define an air gap wholly interior an outer boundary of the core and wherein the first permanent magnet is at a fixed position relative to the core. - View Dependent Claims (18, 19, 20)
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Specification