Electronically actuated valve system
First Claim
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1. An electronically actuated valve assembly for an internal combustion engine, the valve assembly comprising:
- a valve stem; and
a plurality of shape memory alloy segments in operative communication with the valve stem, wherein each shape memory alloy segment is individually actuatable, and wherein actuation of different shape memory alloy segments is configured to cause different valve lifts.
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Abstract
An electronically actuated valve assembly for an internal combustion engine is disclosed, wherein the valve assembly comprises a valve stem, and a plurality of shape memory alloy segments in operative communication with the valve stem, wherein each shape memory alloy segment is individually actuatable, and wherein actuation of different shape memory alloy segments is configured to cause different valve lifts.
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Citations
23 Claims
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1. An electronically actuated valve assembly for an internal combustion engine, the valve assembly comprising:
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a valve stem; and a plurality of shape memory alloy segments in operative communication with the valve stem, wherein each shape memory alloy segment is individually actuatable, and wherein actuation of different shape memory alloy segments is configured to cause different valve lifts. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An electronically actuated valve assembly for an internal combustion engine, the valve assembly comprising:
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a valve stem; a plurality of shape memory alloy segments in operative communication with the valve stem; and an individually controllable multi-level electrical connection to each shape memory alloy segment. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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17. An apparatus, comprising:
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an internal combustion engine; a controller; and an electronic valve actuator in electrical communication with the controller, the electronic valve actuator comprising a plurality of individually actuatable shape memory alloy segments. - View Dependent Claims (18, 19, 20, 21, 22, 23)
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Specification