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

摘要

A super-turbocharger utilizing a high speed, fixed ratio traction drive that is coupled to a continuously variable transmission to allow for high speed operation is provided. A high speed traction drive is utilized to provide speed reduction from the high speed turbine shaft. A second traction drive provides infinitely variable speed ratios through a continuously variable transmission. Gas recirculation in a super-turbocharger is also disclosed.

主权项

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