PISTON ENGINE Russian patent published in 2007 - IPC F02G3/02 

FIELD: mechanical engineering; engines.

SUBSTANCE: proposed piston engine consists of cylinder block with corresponding number of crank-and-piston groups operating to common crankshaft, timing gear, for instance, valve type, fuel system, lubrication, cooling and ignition systems, combustion chamber, system of gas lines, receiver, heat exchanger. Engine combustion chamber to which fuel-air mixture is delivered is brought outside cylinder block being common for all operating cylinders. Part of cylinders is used as delivery ones providing delivery of compressed air into combustion chamber, while other part of operating cylinders is used as expansion machine which is supplied with high-temperature gas delivery from combustion chamber through timing gear. All cylinders, delivery and operating ones, operate according to two stroke cycle. Air from delivery cylinders passes along channels of heat exchanger before getting into combustion chamber. Air is preliminarily heated in heat exchanger by exhaust gases flowing along other channels of the same heat exchangers after which exhaust gases are discharge into atmosphere.

EFFECT: increased thermal efficiency of engine, improved ecological characteristics, reduced specific fuel consumption and specific weight.

2 cl, 2 dwg