Quote:
Originally Posted by freebeard
For the lurkers:
Sounds like applying a Variable Frequency Drive to the piston[s].
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More like this:
I don't know if the Libertine (possible new exception..?) is running the linear generator coils/magnets as a motor during the compression stroke, but most all these research motors try to use springs/air-springs and careful tuning of spring rates etc and piston weights etc-etc to get the piston/s to oscillate in a desirable fashion.
NOT the simple running of the the 'generator' as a linear motor.
They all seem to use a 2-stroke cycle with ports to get a power stroke at every 'TDC'.
While much can be done to make the 2-stroke cycle cleaner in these, we currently use 4 strokes and with good reason.
So ye;
Run the pistons as a linear motor, except for the (generator) power stroke is what I am suggesting.
That means starting with available perfected motor and ignition etc electronics/tech, and; 'Take it from there' for 'Tuning for Linear'.
Yes; You will need a Koenigsegg Freevalve type system for 4-strokes.
This guy has DIY done so,
for varying rpm..!
Fixed 'rpm' is easier.
https://www.youtube.com/@WesleyKagan...uery=freevalve
The end result: