From rotaries to opposed piston, let's do an overview of some the most extreme mini engines!

Sources & Credits:
   • CV MotionTech Running Prototype and T...  
   / @avadienginesinc.7902  
   • Achates Power Opposed-Piston Engine  
   • INNENGINE & Investment  
https://www.liquidpiston.com/xts-210-...
   • Introducing the Omega 1. A revolution...  
   • DEI Free Piston Electric Power Genera...  
   • Libertine LGN120-P1 Linear Generator