Super-turbocharger having a high speed traction drive and a continuously variable transmission

A method of facilitating exhaust gas recirculation in a super-turbocharged internal combustion engine comprising:

• providing a high pressure exhaust port of a first predetermined size in said internal combustion engine;
• providing a low pressure exhaust port of a second predetermined size in said internal combustion engine, said second predetermined size being larger than said first predetermined size;
• driving a high pressure turbine of a high pressure super-turbocharger with high pressure exhaust gases from said high pressure exhaust port;
• driving a low pressure turbine of a low pressure super-turbocharger with lower pressure exhaust gases from said low pressure exhaust port;
• providing compressed air from an output of a low pressure compressor of said low pressure super-turbocharger to an air input of said high pressure compressor of said high pressure super-turbocharger;
• providing compressed air from an output of said high pressure compressor of said high pressure super-turbocharger, at a predetermined pressure, to an intake manifold of said internal combustion engine;
• providing exhaust gases from an output of said high pressure turbine to said intake manifold of said internal combustion engine;
• opening said high pressure exhaust port while pressure of said exhaust gases in said high pressure exhaust port is greater than said predetermined pressure so that said high pressure exhaust gases from said output of said high pressure turbine recirculate through said internal combustion engine.

A method of facilitating exhaust gas recirculation in a super-turbocharged internal combustion engine comprising:

• providing a high pressure exhaust port of a first predetermined size in said internal combustion engine;
• providing a low pressure exhaust port of a second predetermined size in said internal combustion engine, said second predetermined size being larger than said first predetermined size;
• providing high pressure exhaust gases from said high pressure exhaust port to an intake manifold of said internal combustion engine;
• driving a low pressure turbine of a low pressure super-turbocharger with lower pressure exhaust gases from said low pressure exhaust port;
• providing compressed air from an output of a low pressure compressor of said low pressure super-turbocharger, at a predetermined pressure, to an intake manifold of said internal combustion engine;
• opening said high pressure exhaust port while pressure in said high pressure exhaust port is greater than said predetermined pressure so that said high pressure exhaust gases recirculate through said internal combustion engine.

An exhaust gas recirculation system in a super-turbocharged internal combustion engine comprising:

• a high pressure exhaust valve disposed in a first cylinder of said internal combustion engine, said high pressure exhaust valve having a first predetermined size, said high pressure exhaust valve controlling the flow of high pressure exhaust gases in a high pressure exhaust port;
• a low pressure exhaust valve disposed in said first cylinder of said internal combustion engine, said low pressure exhaust valve having a second predetermined size that is greater than said first predetermined size, said low pressure exhaust valve controlling the flow of low pressure exhaust gases in a low pressure exhaust port;
• a high pressure super-turbocharger having a high pressure compressor and a high pressure turbine that is driven by at least a first portion of said high pressure exhaust gases in said high pressure exhaust port and produces compressed air at an output of said high pressure compressor;
• a first conduit that provides at least a second portion of said high pressure exhaust gases from said high pressure exhaust port to an intake manifold of said internal combustion engine;
• a low pressure super-turbocharger having a low pressure compressor and a low pressure turbine that is driven by said low pressure exhaust gases from said low pressure exhaust port;
• a second conduit that provides compressed air from an output of said low pressure compressor to an air input of said high pressure compressor;
• a third conduit that provides said compressed air from said output of said high pressure compressor, at a predetermined pressure, to said intake manifold of said internal combustion engine;
• wherein said high pressure exhaust valve opens while pressure in said first cylinder of said internal combustion engine that flows to said high pressure exhaust gases in said high pressure exhaust port is greater than said predetermined pressure of said compressed air from said output of said high pressure compressor so that said second portion of said high pressure exhaust gases recirculate through said internal combustion engine, and said low pressure exhaust valve opens after said high pressure exhaust valve and during an exhaust stroke of said first cylinder.

A system of facilitating exhaust gas recirculation in a super-turbocharged internal combustion engine comprising:

• a high pressure exhaust valve disposed in a first cylinder of said internal combustion engine, said high pressure exhaust valve having a first predetermined size, said high pressure exhaust valve controlling the flow of high pressure exhaust gases in a high pressure exhaust port;
• a low pressure exhaust valve disposed in said first cylinder of said internal combustion engine, said low pressure exhaust valve having a second predetermined size that is greater than said first predetermined size, said low pressure exhaust valve controlling the flow of low pressure exhaust gases in a low pressure exhaust port;
• a high pressure super-turbocharger having a high pressure compressor and a high pressure turbine that is driven by said high pressure exhaust gases from said high pressure exhaust port;
• a low pressure super-turbocharger having a low pressure compressor and a low pressure turbine that is driven by said low pressure exhaust gases from said low pressure exhaust port;
• a first conduit that provides compressed air from said low pressure compressor of said low pressure super-turbocharger to an air input of said high pressure compressor of said high pressure super-turbocharger;
• a second conduit that provides compressed air from an output of said high pressure compressor of said high pressure super-turbocharger, at a predetermined pressure, to an intake manifold of said internal combustion engine;
• a third conduit that provides said high pressure exhaust gases from an output of said high pressure turbine of said high pressure super-turbocharger to said intake manifold of said internal combustion engine;
• wherein said high pressure exhaust valve is opened while pressure in said first cylinder of said internal combustion engine that flows to said high pressure exhaust port is greater than said predetermined pressure so that said high pressure exhaust gases from said output of said high pressure turbine of said high pressure super-turbocharger recirculate through said internal combustion engine, and said low pressure exhaust valve opens after said high pressure exhaust valve and during an exhaust stroke of said first cylinder.

A system for facilitating exhaust gas recirculation in a super-turbocharged internal combustion engine comprising:

• a high pressure exhaust port of a first predetermined size in said internal combustion engine;
• a low pressure exhaust port of a second predetermined size in said internal combustion engine, said second predetermined size being larger than said first predetermined size;
• high pressure exhaust gases provided from said high pressure exhaust port to an intake manifold of said internal combustion engine;
• low pressure exhaust gases provided from said low pressure exhaust port;
• a low pressure super-turbocharger having a low pressure compressor and a low pressure turbine that is driven by said low pressure exhaust gases from said low pressure exhaust port;
• compressed air provided from an output of said low pressure compressor of said low pressure super-turbocharger, at a predetermined pressure, to said intake manifold of said internal combustion engine;
• wherein said high pressure exhaust port is opened while pressure in said internal combustion engine feeding exhaust to said high pressure exhaust port is greater than said predetermined pressure of said compressed air provided from an output of said low pressure compressor so that at least a portion of said high pressure exhaust gases recirculate through said internal combustion engine.