TWO-STROKE DIESEL ENGINE Russian patent published in 2011 - IPC F02B75/32 F01B9/04 

FIELD: engines and pumps.

SUBSTANCE: two-stroke diesel engine comprises: frame, two-cylinder block 1, covers 4, 5, straight shaft 21, pistons 22, cylinders, fuel system, lubrication system, air preparation and starting systems, and control mechanisms. Said straight shaft 21 supports fly wheel 33 and auxiliary mechanism drive gears 36, 37. Every cylinder is provided with two lines of intake openings 11 arranged at cylinder center between which through bores are made. Pistons 22 moves in opposite directions. Each piston divides cylinder inner chamber into two combustion chambers 23, 24. Piston comprises cylindrical hollow casing 25 with both faces stopped by covers 28. Said casing 25 has two lengthwise through aligned slots 27. Mechanisms to convert reciprocation of pistons 22 into rotation of shaft 21 are arranged inside pistons 22. Said mechanism comprises frame 29 and gear wheel 31. Said frame 29 is bolted to piston covers 29 and furnished with two racks 30. Said racks 30 interact with gear wheel 31. Said gear wheel 31 in fitted inside frame 29 and on square-section straight shaft 21. Fear wheel 31 is held inside frame 29 by two disks screwed to frame side surfaces. Shaft 21 passes through cylinder bores, piston lengthwise slots and gear wheels 31.

EFFECT: increased effective stroke of pistons, better balance, ease of manufacture and reduced weight.

13 dwg