Originally Posted by Flingwing
If you were into bicycling in the late '70s, you may remember the "biopace" chainring, designed to match the load on the cyclist's leg to the amount of leverage available at each point of the pedal cycle.
Hehehe, well my Biopace chainring
used to do 100+ miles a week in the 90s.
Seriously though, i've seen a lot of ideas based around the idea of altering the pistion motion for improved efficiency. Sinusoidal just gives the gases the best chance of exchange. I can see why a dwell at the base of a 2-stroke might be considered usefull, but again why not just increase the stroke and avoid the higher order balancing issues.
I'm not a great fan of the crank mechanism, but it's simplicity and compactness are pretty hard to beat. Given the choice i prefer the epicycloidal mechanisms associated with rotaries, but there are combustion issues here.
See other engine thread
- perhaps a merging is in order...
Mart