INTERNAL COMBUSTION ENGINE Russian patent published in 1999 - IPC

FIELD: transport engineering: automobile and tractor engines. SUBSTANCE: two-stroke engine has cylinder block with two fixed working pistons and two fixed supercharging pistons provided with water cooling jacket and automatic air valves. Movable cylinders mechanically coupled with shaft are made in form of coaxial, paired by bottoms, supercharging cylinders and working cylinders with bypass valves. Exhaust branch pipes are cast integral with cylinders and are telescopically connected with exhaust pipe. Fuel and water unit-injectors and conduit for laser beam are placed inside pistons. EFFECT: increased efficiency, reduced toxicity of exhaust gases, increased service life of engine. 8 cl, 4 dwg