INTERNAL COMBUSTION ENGINE Russian patent published in 2001 - IPC

FIELD: mechanical engineering. SUBSTANCE: proposed two-stroke engine has horizontal cylinder block accommodating two fixed supercharging pistons with water jacket and spacer bushings pressing two-leaf compression lip-type seal. Air branch pipe with automatic air valve is found inside piston. Two fixed working pistons whose size is smaller than that of supercharging pistons are connected to cylinder block at opposite side. Compression ratio adjusting metal gaskets are installed under piston flanges. Fuel and water injector units, laser beam guide and exhaust valve with exhaust branch pipe are arranged inside pistons. Cast integral supercharging and working cylinders communicating through bypass valves move between pistons. Cylinders are made coaxial and are paired by bottoms. Two pairs of cylinders paired by bottoms are connected to cylinder pin. Split connecting rod head is connected to middle of cylinder pin at other side. Connecting rod transmits reciprocating motion to three-section double-acting piston pump to provide use of high- pressure liquid in hydraulic drive of driving mechanism. Device converting reciprocating motion of horizontal cylinders into rotary motion of output shaft is installed on outer ends of cylinder pin. Rotary motion is transmitted to camshaft by means of gears through idler gears. Camshaft is provided with cams to drive injector units, exhaust valve and oil pump gears through rockers. Flywheel is mounted on end of camshaft. Supercharging pistons are provided with replaceable heads. Ring with segment cut is secured by studs to head of working piston, and spacer ring with rounded off faces pressing compression lip-type seal is fitted. Supercharging and working cylinders have water jackets. Cooling wells communicate with oil pump through hollow pin and telescopic joint. Supercharging and working cylinders communicate through two bypass valves. EFFECT: increased efficiency of engine and its service life. 4 cl, 4 dwg