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Free Piston


Single Crankshaft


Double Crankshaft


Multiple Crankshafts


Rotary Engines


Barrel Engines


Loughborough University


Barsanti & Matteucci 1


Leyland L60


Napier Deltic  1


HiPerTEC


FairDiesel




Barsanti & Matteucci  2


Diesel Air


Napier Deltic  2


Huttlin-Kugelmotor  1






Burmiester & Wain  1


Pattakon  1


Napier Deltic  3


Huttlin-Kugelmotor  2






Burmiester & Wain  2


Pattakon  2




MYT






Atkinson  1


Monolith Engines




 Niama Reisser 1






Atkinson  2


Fairbanks  Morse




Niama Reisser 2






Rootes TS3  1


Achates Power  1










Rootes TS3  2


Achates Power  2










Rootes TS4


Achates Power 3










EcoMotor OPOC  1


Pinnacle  1










EcoMotor OPOC  2


Pinnacle  2










Pattakon  1


Morton Engine










Pattakon  2


Junkers  Jumo 205










Doxford  1












Doxford  2












Junkers HK65