Patent EA-022636-B1 (EA)
Title: Opposite radial rotary-piston engine
Inventor: CHORONSKI EVGENIY
IPC: F02B75/28
Filed: 2009-08-24
Abstract: A two-stroke opposite radial rotary-piston engine is proposed, comprising a stationary cylinder block (1) including an intake channel (F) and an exhaust channel (G). The engine comprises four cylindrically shaped sleeves (4), each having inner sidewalls, an inlet window (B) and an outlet window (D) of predetermined sizes and configurations, made in the inner sidewalls of sleeves (4) of the cylinder, said inlet (B) and outlet (D) windows correspondingly communicating with said intake channel (F) and said exhaust channel (G). The engine also comprises four pairs of pistons (6), each piston having a rod (8) and a head situated oppositely to the rod (8). Each pair of the pistons (6) is slidely disposed within one of said sleeves (4) so that the rods (8) face the upper and lower openings of the corresponding sleeve (4), said pair of pistons being oppositely linearly movable in relation to each other in the sleeve (4) forming a common chamber defined by the pistons' (6) heads and a portion of the inner sidewalls of the sleeve (4) situated between the pistons' (6) heads. The engine also comprises four pairs of guiding bearings (26, 27) essentially stationed on said cylinder block (1), wherein said rods (8) are capable of operative linear running within said guiding bearings, a power takeoff shaft (20) revolvable in relation to said cylinder block (1), and two substantially identical rotors (16, 17) fixedly mounted on said takeoff shaft (20). Each rotor has an inner operation surface formed by a predeterminedly curved line of a closed type having a transverse axe, the transverse axes of said two rotors (16, 17) disposed substantially perpendicularly to each other, each said rotor (16, 17) on the frontal part of its outer surface including a peripheral concaved surface portion (M) made therein along said curved line. The engine also comprises four T-like traverses (7) mounted so that pair-wise spanning said rods (8) attached thereto, each pair of said traverses (7) pair-wise associated with one of said rotors (16, 17), and each said traverse (7) including a protrusion (A), having a convex spherical surface in its lower portion capable of cooperating with said concaved surface portion (M) of said outer surface of each said rotor (16, 17) during a start of said engine, and a predetermined clearance between said concaved surface portion (M) of said outer surface of each said rotor (16, 17) and said convex spherical surface of the protrusion (A) of the traverse (7) is operatively provided after the start of said engine. Four support bearings (10) are also provided, each said support bearing coupled to one said traverse (7), wherein each of said four support bearings (10) includes an external bushing capable of operative rolling over the inner surface of the rotor (16, 17) associated with the traverse (7) being coupled to the corresponding support bearing (10) so that said rolling is capable of impelling the rotors (16, 17). During the start of the engine the rolling of the rotors (16, 17) drive said pairs of pistons (6) by means of the protrusions (A) of each traverse (7). Furthermore, other elements and alternative module embodiments are provided, enhancing the efficiency, size, weight, and power variety of the engine.