TURBOCHARGER WITH TWO-STAGE SERIES COMPRESSOR DRIVEN BY EXHAUST GAS-DRIVEN TURBINE AND ELECTRIC MOTOR

摘要

A turbocharger includes a two-stage serial compressor having a first impeller and a second impeller affixed to a shaft and arranged in series for a two-stage compression of air, an exhaust gas-driven turbine having a turbine wheel affixed to the shaft, and an electric motor mounted on the shaft for assisting the turbine in rotatably driving the compressor.