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This is a very good development in the area of energy conversion. Using permanent magnet in high temperature environment is a concern but there may be other ways to overcome this limitation. Using opposing pistons will cancel or reduce vibration related issues. The main benefit I see with this engine is the ability to control the power flow precisely by electronics. The mechanical energy in the piston needs to be transferred synchronously by tracking the induced emf in the stator coils. Power electronics and control method are very well established for this( linear induction motor controls, magnetic levitation controls, etc) though there may be some critical issues related to tracking continuously varying emf. Overall, it will eliminate many mechanical connections that are inherent in a rotary engine and alternator solution and that by itself should help improve the efficiency of energy transfer. It will be interesting to see when they build some prototypes of this concept.
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Nov 28, 2012