Permanent magnet electromagnetic actuator for an electronic valve actuation system of an engine
First Claim
Patent Images
1. A system comprising:
- A valve actuator coupled to a valve of an internal combustion engine, comprising;
at least one electromagnet having a coil wound about a core;
an armature fixed to an armature shaft extending axially through the core, and axially movable relative thereto, where an axis of said coil windings of said electromagnet is parallel to movement of said armature; and
at least one permanent magnet extending at least partially into an interior portion of the coil, wherein the at least one permanent magnet is at least partially angled relative to axial movement of said shaft.
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Accused Products
Abstract
A valve actuator for an internal combustion engine is described having a core having a wound coil located therein, said core further having at least one permanent magnet located at least partially inside said coil and positioned at an angle relative to a direction of movement of an armature.
24 Citations
25 Claims
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1. A system comprising:
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A valve actuator coupled to a valve of an internal combustion engine, comprising;
at least one electromagnet having a coil wound about a core;
an armature fixed to an armature shaft extending axially through the core, and axially movable relative thereto, where an axis of said coil windings of said electromagnet is parallel to movement of said armature; and
at least one permanent magnet extending at least partially into an interior portion of the coil, wherein the at least one permanent magnet is at least partially angled relative to axial movement of said shaft. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 10)
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9. (canceled)
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11. A valve actuator for an internal combustion engine, comprising:
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a core having a wound coil located therein, said core further having at least one permanent magnet located at least partially inside said coil and positioned at an angle relative to a direction of movement of an armature; and
at least an air gap adjacent to said at least one permanent magnet. - View Dependent Claims (12, 13, 14, 16)
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15. (canceled)
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17. A system comprising:
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a valve actuator comprising a pair of cores each having a wound coil located therein, each of said cores further having at least one permanent magnet located at least partially inside said respective coils and positioned at an angle relative to a direction of movement of an armature, said actuator further comprising at least an air gap adjacent to said at least one permanent magnet; and
a cylinder valve of an internal combustion engine coupled to said armature. - View Dependent Claims (18, 19, 20)
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21. A system comprising:
A valve actuator coupled to a valve of an internal combustion engine, said actuator comprising a core having a wound coil located therein, said core further having at least one permanent magnet located at least partially below said coil and positioned at an angle relative to a direction of movement of an armature, with an inner part of said permanent magnet being located closer to said coil than an outer part of said permanent magnet, where said inner part of said permanent magnet is closer to a center of said core than said outer part of said permanent magnet.
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22. A valve actuator for an internal combustion engine, comprising:
- a core having a wound coil located therein, said core further having at least one permanent magnet located at least partially below said coil and positioned at an angle relative to a direction of movement of an armature, with an inner part of said permanent magnet being located closer to said coil than an outer part of said permanent magnet, where said inner part of said permanent magnet is closer to a center of said core than said outer part of said permanent magnet, further comprising a first gap at said inner part of said permanent magnet and a second gap at said outer part of said permanent magnet.
- View Dependent Claims (23)
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24. A valve actuator for an internal combustion engine, comprising:
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a core having a wound coil located therein, where an axis of said coil windings of said electromagnet is parallel to movement of said armature;
permanent magnet means for increasing magnetic flux in the actuator; and
where said permanent magnet means is located at least partially within said coil and positioned at an angle relative to a direction of movement of an armature. - View Dependent Claims (25)
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Specification