Patent ID: 7111449
Filing Date: 2006-09-26
Classification: F02K

Abstract:
1. A thermodynamic gas heat engine comprising: a gas or working fluid inlet means comprising a first geometry and area; mixing chamber means wherein inlet gas is entrained and mixed with a recirculating gas; at least one injector means which incorporates at least one convergent-divergent nozzle comprising a second geometry and area and which generate supersonic flow from the said recirculating gas for compressing said entrained inlet and recirculation gas or at least one working fluid; a diffuser means, which reduces the velocity of the combined inlet, entrained gas and the recirculating gas, and thus increases the pressure of the combined gas stream, said diffuser optionally including means for the development of shock waves to aid the compression process; a primary combustion system means used in connection with Joule-Brayton turbo-jet engines; at least one outlet nozzle having a third geometry and area and optionally arranged to enable the outlet gas to be at least one of choked and unchoked; at least one scoop means optionally including at least one diffuser-that divert, said at least one scoop means diverting a portion of the gas moving to an engine outlet and so derive said recirculating gas by diverting it to the input of the engine for supplying the said injector means; duct means for diverting said recirculating gas and diverting said gas to the injector means; fuel supply means for the primary combustion system means; diverted cooling gas bleeds means for cooling at least one duct and combustion chambers; regulation means for regulating the geometry and area of said gas or working fluid inlet means.