INTERNAL COMBUSTION ENGINE WITH RECTANGULAR PISTONS AND PRECHAMBER IGNITION PLUGS Russian patent published in 2002 - IPC

FIELD: mechanical engineering; internal combustion engines. SUBSTANCE: pistons are made with direct angles and round holes are drilled in piston sides into which round bushings are fitted. Bushings fitted on some parallel sides of piston are overlapped from faces by bushings fitted on other parallel sides of piston. Slots are made below piston bushings in which bushings designed for removing excess oil are installed operating similar to way of operation of round piston bushings. With piston moving, bushings rotate. Prechamber ignition plug is provided with prechamber tip with valve mechanism distributing compressed and ignited fuel. EFFECT: increased efficiency, reduced ejection of harmful products into atmosphere, decreased friction of pistons in engine piston block owing to use of prechamber ignition plug and rectangular pistons in piston block. 7 cl, 10 dwg