TWO-STROKE INTERNAL COMBUSTION ENGINE Russian patent published in 2003 - IPC

FIELD: mechanical engineering; internal combustion engines. SUBSTANCE: proposed engine has working cylinder with ring combustion chamber and inflow scavenging, working piston with crown made integral with rod and coupled with crankshaft. Piston of supercharger is arranged coaxially with working piston and is also coupled crankshaft. According to invention, nozzle chambers with mouths adjoining smaller and larger diameter of piston crown are made in rod and piston. Combustion chamber in radial section has form of segment, and at working stroke of working piston, owing to two-side tangential direction of flows from nozzle chambers, toroidal vortex is formed in ring combustion chamber. Piston of supercharger can be made two-step, ring, enclosing working cylinder and interacting with shaft in antiphase to working piston. Its inner step is coupled with air and scavenging channels, and outer step, with carburetor and automatic valves of combustion chamber. EFFECT: increased efficiency of engine at its full balancing. 4 cl, 5 dwg