TWO-STROKE INTERNAL COMBUSTION ENGINE Russian patent published in 2001 - IPC

FIELD: mechanical engineering; internal combustion engines. SUBSTANCE: two-stroke internal combustion engine has housing, cylinders with pistons provided with rings and pins, flywheel rotation mechanism, fuel feed system, mechanism to ignites fuel mixture i combustion chamber, suction chamber arranged under piston and provided with additional piston rigidly connected with main piston by means of rod. Rod of piston system serves also as rod of pump, and piston system transmission and synchronization mechanism has camshaft arranged in engine cylinder block bushing. Camshaft is connected by three-arm levers and eccentric drive, with rod of piston system. Flywheel is fitted on one end of camshaft on antifriction bearings. Flywheel is furnished with clutch. Ignition distributor is installed through coupling on other end of camshaft. In its turn, camshaft installed in bushing has two U- shaped channels, one of which serves for suction and the other, for pressure feeding of working liquid. Diameters of outlet holes of channel vertical parts are equal to diameters of two through cross holes in bushing, and distance between these two holes along chord, parallel to horizontal axis of bushing, is equal to diameter of bushing hole. EFFECT: increased service life of engine, improved ecological characteristics, enlarged range of liquid fuels used in engine. 4 dwg