FIELD: mechanical engineering; engines, pumps, compressors. SUBSTANCE: housing of machine consists of two semi-housings 1 and 2. Three rotors 4, 5 and 6, dividing spherical space of housing into four working chambers 9, 10, 11, 12, are placed inside housing spherical space. Central rotor 4 is connected at each side with corresponding sector rotor 5 or 6. Semi-housings 1, 2 are interconnected by clamp 3 for angular displacement relative to each other and relative to zero meridian. They are connected in equatorial plane equidistant from machine poles in each meridional section and formed by intersection of axes of rotation of sector rotors 5, 6 with chamber-forming spherical surface of housing. Semi-housing 1 has ring groove to receiver ring projection of other semi- housing 2, thus forming and alignment device. Provision is made for changing phase setting angle and precession angle. EFFECT: optimized working cycle of machine. 3 cl, 4 dwg
