INTERNAL COMBUSTION ENGINE WITH AUXILIARY CYLINDER (VERSIONS) Russian patent published in 2007 - IPC F02B41/06 F02B33/00 

FIELD: mechanical engineering; internal combustion engines.

SUBSTANCE: proposed supercharged internal combustion engine contains two working cylinders with pistons, auxiliary cylinder with piston installed between working cylinders, and crankshaft with crankpins for working and auxiliary cylinders. Working pistons are installed at one level at one revolution difference in strokes of cylinder where operating cycles of engine take place, namely, intake compression, fuel combustion and expansion. Auxiliary cylinder operates on residual pressure of exhaust gases getting from two working cylinders in turn. Engine is furnished additionally with bypass channels made in cylinder head and closed by valves from side of working and auxiliary cylinders, intake and exhaust valves of working cylinders and exhaust valve of auxiliary cylinder installed on cylinder head. Crankpin of crankshaft of auxiliary cylinders is shifted by 80° relative to crankpins of working cylinders in direction of lag. According to second design version, engine is not supercharged.

EFFECT: increased economy, power, reduced noise in operation, possibility of supercharging to increase engine power several times without reduction of efficiency.

3 cl, 1 dwg