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A comment on Internal Combustion Engine. Parent comment

Re:Internal Combustion Engine by toxik on Friday April 30, 2021 @05:37PM (#26999690)
It’s a good question, why is only fuel injection and ignition computer controlled? The intake and exhaust valves must also be solenoid controllable.
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Re:Internal Combustion Engine by LeonM on Friday April 30, 2021 @05:52PM (#26999851)
Swedish hypercar builder Koenigsegg has made a system like this, they call it FreeValve.

Their upcoming car called the Gemera will feature FreeValve, its 2.0L 4-cylinder is said to generate over 600HP. Though it must be said that this is a 1.5 million dollar car, so don't expect this kind of performance per displacement from other brands.

A guy on Youtube made his own version of freevalve, and got it to work on a Mazda Miata: https://www.youtube.com/watch?v=E9KJ_f7REGw

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Re:Internal Combustion Engine by opwieurposiu on Friday April 30, 2021 @05:50PM (#26999823)
This exists, but it is very expensive. https://www.freevalve.com/freevalve-technology/
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