I have read that spreading of the flame, in the wide flat combustion chamber of Wankels
cools it to the point where efficient combustion is not possible. ?

Has anyone explored the possibility of thermal insulation, on the outside of,the engine,
just where it is needed to increase the local temperature. ?Likewise couldlocalized
?insulation be used inside the rotor to main tain high enough temperatures for efficient
combustion?

Likewise a circulation of fluid between hot and cold spots on the exterior surface of the
engine could remove heat, from one area, of the engine and add it other areas. ?

Parker T May

Tell that to the exhaust :)