Do you have any thoughts on this noble gas engine? I saw an interview with some of the principals today -- it's impressive. They're about to start production. I'll believe it when I can buy one, though.
Summary: A piston engine with a mixture of noble gasses sealed inside, ionized with RF and a magnetic field, then fired with a spark plug. There's no heat, just lots of power. The helium moves toward the center upon compression and the argon stays at the periphery upon firing. The biggest problem I see, aside from the theory, is that keeping helium inside a cylinder with a sliding end for long seems really hard. The websites also seem way too over the top -- caution. http://www.inteligentry.com/ http://pesn.com/2009/07/18/9501554_Plasma_Transition_Process_motor_system/ http://www.plasmerg.com/kits.html