SYCOMOREEN is showing its MPRBC prototype with the disassembled parts and the description of the 4 working steps : br a) one step to convert the motion br b) one step to get thermomechanical exchanges br c) one step to achieve the gaseous flows br d) one step (optionnal) to manage the rate of compression and the ignition (spark plug, injectors) br br SYCOMOREEN is notably explaining its original kinematics with double sliding orthogonal grooves and rotary bilobed central cam especially designed for this rotary pistons engine with controlled beating (Machine à Pistons Rotatifs à Battement Contrôlé (MPRBC). br br Filmed in december 2009.