Conventional internal combustion engines are based on a rod-and-crank system, converting a reciprocating linear motion to a continuous rotational motion.
The Wankel rotary engine seemed to suggest that a more elegant solution was possible, but its advantages are not obvious :
one problems is that the shape of the combustion chamber does not allow perfect combustion, so there is a certain amount of CO and unburnt residue in the exhaust ;
the other basic defect is the problem of joint tightness at the apices between the three sides of the rotor.
Principle
The basic principle of the MRCC circular-chamber rotary engine is to create two diametrically opposite spaces of variable volume within the cylindrical bore of a stator. The successive phases of a four-stroke engine cycle take place in these two active variable-volume spaces.
Prototype
History of the MRCC
Patents
1 international patent :
- Europe : France, Allemagne, Italie, Autriche - USA - Canada - Japon
R&D
10 years' R&D
Research contracts
6 research contracts with research laboratories, contract research companies and engineering schools. These have entirely validated the concept.
- ENI Tarbes : concept studies
- INSA : design, simulation - ENSMA : combustion parameters, trials - IMFT : internal aerodynamics - CRMT : segmentation - CRMT : test benches
The MRCC concept 
Introduction
