Rotary-piston engine

An engine called rotary piston engine, comprising:

• a shape of revolution F relative to a delta axis, and rotatably movable about said delta axis in relation to an envelope V,
• n cavities A_i which are shapes of revolution of axis β_i, distributed over the perimeter of F,
• in each cavity A_i is housed a roller G_i that rotates about the axis β_i, and has at least 2 faces, G_i_1 and G_i_2, the first of these faces G_i_1 being capable of ensuring sealing with the cavity A_i at some moments of the cycle of the system when this face is inside the cavity A_i and the section of which by a plane perpendicular to β_i, is an arc of circle centered on β_i, with a centre angle (G_i_1)
• a mechanical means that makes the rotation of each G_i about β_i proportional to the relative rotation of delta axis of the shape F relative to the envelope V,
• the envelope V being the envelope generated by the rollers G_i in their rotational motion about the β_i themselves driven by F, and the relative rotation of delta axis of the shape F relative to the envelope V,
• the face G_i_2 of G_i is the envelope generated by the envelope V at the level of G_i and thus ensures sealing between G_i and the envelope V,
• the assembly is carried out so that, if we consider a section by a plane perpendicular to delta, the envelope V, the shape F and one of the ends of the arc of circle G_i_1 of G_i, are in contact, in a same location, at a particular moment of the cycle,
• side walls or flanges J1 and J2 over which the shape F, the rollers Li, and the envelope V bear,
• the shape F, the rollers G_i, the envelope V, the flanges J1 and J2, delimiting volumes that are closed and variable at different moments of the cycle of the relative rotation of F relative to V,
• the engine being wherein at least 2 cavities A_i and A_i+1 are contiguous, and in that, between at least 2 consecutive cavities A_i and A_i+1, a passage is arranged so that, when one end of the envelope V is between these 2 cavities, the fluid that has been compressed by one of the faces of the end of the envelope V, can pass on the other face.