In 1932, the toroidal engine of Messrs. L. Roux and P. Baudelaire appeared as a novelty.

“Views of the R-B Toroidal”

-The engine had a diameter of 46 centimeters and a useful displacement of 4 liters. As we know, it is not the first toric engine, since we have already known the Beck, Baradat-Esteve, Büssing, etc. Although none made it into production as a truly useful engine.