Abstract: A turbo generator having a turbine configured to be driven by exhaust gas from an internal combustion engine, and an electric generator having a rotor coupled to the turbine and a stator having an ironless coil arranged with the rotor to generate electric power when the rotor is rotated by the turbine.

Abstract: A system for increasing electrical power includes an exhaust gas turbine, a generator, and a controller. The exhaust gas turbine is configured to be driven by exhaust gas from an engine. The generator is coupled to the exhaust gas turbine to produce electrical power for an electrical load. The controller is configured to increase the electrical power produced by the generator in response to a certain decrease in an electrical load voltage of the electrical load when the engine is at idle. The controller increases the electrical power by increasing a throughput of the exhaust gas through the exhaust gas turbine.

Abstract: A turbo generator having a turbine configured to be driven by exhaust gas from an internal combustion engine, and an electric generator having a rotor coupled to the turbine and a stator having an ironless coil arranged with the rotor to generate electric power when the rotor is rotated by the turbine.

Abstract: Turbocharger control systems used with electric assist turbochargers include an electric motor for controlling turbocharger operation. The system comprises an oil pressure sensor attached to the turbocharger for sensing oil pressure for lubricating a shaft bearing assembly. The pressure sensor provides oil pressure information to a control system that controls the operation of the electric motor and/or other operating parameters of the turbocharger and/or the vehicle. The control system regulates operation of the electric motor during operating conditions where a low oil pressure condition is detected when compared to a predetermined minimum. The control system reactivates the electric motor once a desired minimum oil pressure has been detected.

Abstract: Systems for preventing/controlling compressor surge in an electrically assisted turbocharger comprise a turbocharger having an electric motor disposed around a turbocharger shaft. The electric motor controller is electrically coupled to the electric motor for controlling the rotational movement provided by the electric motor to the turbocharger shaft. A memory is electrically coupled to the electric motor controller and comprises a multi-dimensional map of compressor surge conditions stored therein. Sensors are used to provide desired engine and/or turbocharger operating information for comparing against the stored map data. The sensors are electrically coupled to the electric motor controller. The controller plots the actual operating information provided by the sensors on the stored map to evaluate whether the turbocharger is operating in different operating regions.

Abstract: An electric assisted turbocharger has an electric motor with a stator and a rotor that is coupled to a turbocharger shaft carried by a bearing assembly. The stator has a left-hand winding and a right hand-winding each projecting axially outwardly therefrom. The winds each extend a different distance radially along the motor (and are thus asymmetrical with respect to one another), thereby forming a radial gap along an axial end of the stator. The so-formed stator is disposed within a motor housing and together, the stator and motor housing, facilitate placement center housing axial end therein to minimize turbocharger axial length. The rotor is configured to prevent migration of oil into the motor housing, to improve dynamic balance, and comprises an integral thrust washer for placement against the bearing assembly.