INTERNAL-COMBUSTION PISTON ENGINE NAYDA

摘要

The present invention relates to an adiabatic-type engine designed for reducing operation costs. This engine is characterised in that two additional strokes are added for a forced cooling of the engine during the strokes and for blowing air into the cylinders. Several constructions are provided mainly for improving the startup of a cold engine. The engine comprises the following members: additional channels ensuring communication between the chambers of the cylinders and of a cooling jacket; valves for closing the additional channels; a distribution device with a drive system from the crankshaft, wherein the transmission relation is 2:(T+2) where T is the initial stroke of the engine; and a cooling jacket which comprises spiral-shaped chambers and is filled with a cooling medium such as air or an air-fuel mixture for cooling the engine and blowing air therein due to the pumping action during the two additional strokes. The engine can also be fitted with injectors which are serially connected by the inlet channel, wherein said injectors communicate through active-gas ducts and via an additional channel with the cooling jacket in order to blow air into the cylinder due to the energy of the cooling medium. An augmentor plenum communicates with the chambers of the cylinders and of the cooling jacket through supply and exhaust ducts having controlled valves mounted therein. It is thus possible to increase the blowing-in pressure without any inertia when load jumps are applied on the engine, and to improve the startup of the engine by feeding pressurised air from the plenum to the cooling jacket. The fuel consumption can thus be reduced by approximately 30 % relative to traditional engines.