Clean diesel amp; other eco-boost engines with throttled exhaust systems

摘要

An internal combustion engine may be fitted with an exhaust gas driven turbine 6 coupled to a motor generator 2. The motor generator may be connected via a continuously variable transmission (CVT) unit 3 to an engine crankshaft 4. The system may be used to start a vehicle. In a second embodiment a turbocharger having an exhaust gas driven turbine 10 is connected to a motor generator 10 and to a compressor 2. An intercooler 4, cooled by a fan 5 may be fitted. A second motor generator 17 may be coupled via a CVT unit 19 to an engine crankshaft 22. The speed of the turbine or turbocharger may be varied by the motor generator and vice versa. Sensors measure engine and vehicle parameters and send signals to an ECU which may be self-learning. The turbine, turbocharger motor generator may be operated in differing modes dependent upon the vehicles status i.e. start up, normal running, regenerative braking, temperature of catalytic convertor. A battery pack may be used to store power from the generator. The system may be used for petrol or diesel internal combustion engines. The motor generator may transmit mechanical or electrical power.