Fixed-rail rotor pump and fixed-rail rotor pump combined supercharging internal-combustion engine

Abstract

A fixed-rail rotor pump and fixed-rail rotor pump combined supercharging internal combustion engine are described. In the fixed-rail rotor pump, a rotor shaft runs through a rotor; the rotor is internally tangent to the inner wall of the cylinder; the inner side of at least one side of a cylinder-end cover is fixed with a convex fixed-rail disposed concentrically with the cylinder; the rotor runs through the cylinder end cover and the fixed-rail; a piston is provided along the external periphery of the rotor and is rotatably connected to the rotor via a rotating shaft of the piston; the rotor is provided with a piston comprises a top arc surface, a bottom arc surface the three angels of the piston constitute an equilateral triangle; the top angle of the piston keeps contact with the inner wall of the cylinder; the bottom arc surface of the piston is externally tangent to the outer peripheral surface of the fixed-rail; the piston moves in a curved path around the fixed-rail.