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I wonder if they're solenoid valves? I wonder what the durability is? I wonder what the power consumption is? I wonder what the limitations are for valve weight, opening and closing speeds, duty cycle, and RPM? I wonder if they can be used to only partly open a valve?
If they're up to full-time use in an automotive engine, these could be a major improvement over our current engines. Greatly reduced friction, and the ability to custom-tailor your valve openings to current conditions and demands, and more!
Electrically-operated valves have been just around the corner for a long time now. I'm hoping this means they may actually wind up in a real car engine soon!
-soD
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