Motor fluid, and water-soluble - tire to hydraulic transmission, without the exhaust, or expansion, in the cylinders on the pistons (resting on the liquid and the vacuum) being in equilibrium on rockers compounds, which, during the travel of the said, the valves of the internal fluid inlet and the fonctionnantpar the action of a single charge, air or fluid whatsoever tablet, or by a bottle of air or gas liquefied