Patent ID: 7762217

Claim:
A combined-cycle combustion engine based on a contribution of pre-heated carbon dioxide (CO 2 ) to combustion gases, the engine incorporating a basic structure equivalent to that of a conventional gasoline or diesel combustion engine, wherein a conduit operable to supply carbon dioxide (CO 2 ) from a carbon dioxide (CO 2 ) storage tank traverses a heat exchanger for pre-heating carbon dioxide (CO 2 ) prior to injection into an engine cylinder, and each cylinder of said engine incorporates an injector for carbon dioxide (CO 2 ) coming from the carbon dioxide CO 2 storage tank supplying said pre-heated carbon dioxide (CO 2 ) such that immediately after fuel explodes in the cylinder, a strong thermal expansion of the carbon dioxide (CO 2 ) occurs, translating into an increase of torque, and each injector is operable to supply the pre-heated carbon dioxide (CO 2 ) to the corresponding cylinder near an inner surface of said cylinder, such that the carbon dioxide (CO 2 ) generates a perimetral barrier for the combustion gases for absorbing a substantial portion of heat for thermal expansion of the carbon dioxide and for reducing the thermal level in the engine block.