METHOD OF OPERATION OF TWO-STROKE INTERNAL COMBUSTION ENGINE Russian patent published in 1999 - IPC

FIELD: mechanical engineering; omnivorous two-stroke internal combustion engines. SUBSTANCE: piston compressor (piston cold group) is introduced into two-stroke internal combustion engine from which for instance through receiver, compressed air is supplied to working (not) group of pistons at filling duty for filling from minimum (practically zero volume) to preset volume. At the cost of increase in diameter of hot piston group, as compared with diameter of cold piston group, degree of increase in volume at expansion is of the order of 20 at standard 8-10 fold degree of volume change at compression. length of working stroke of hot group, as compared with stroke of cold group, can be reduced more than two times. Hot pressure, according to invention, is 1.1 arm. abs, instead of 3-5 atm. abs. in existing engines. Cyclic economy is 1.5 times higher as compared with standard four-stroke engine. EFFECT: provision of increase in volume in process of hot expansion, enhanced ecological characteristics of cycle. 1 cl, 6 dwg