Patent
Motor-assisted variable geometry turbocharging system
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TLDR
In this article, the motor assisted variable geometry turbocharging system has a motor to add power to the turbocharging shaft, especially at low exhaust gas volume, and the turbocharger has control over compressor air inlet direction and/or control of exhaust gas to a two-volute expander.Abstract:
The motor-assisted variable geometry turbocharging system has a motor to add power to the turbocharging shaft, especially at low exhaust gas volume. Additionally, the turbocharger has control over compressor air inlet direction and/or control of exhaust gas to a two-volute expander. These are individually controlled directly or indirectly from an engine controller to enhance turbocharger performance. In a preferred embodiment, the motor is an electric motor, mounted directly on the turbocharger shaft intermediate the turbo expander and turbo compressor and within the main housing.read more
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References
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Patent
Drive system for turbochargers with rotary electric machines
TL;DR: In this article, a rotary electric machine coupled to an internal combustion engine is used as an electric generator to generate electric power to drive the turbochargers of the engine, thus feeding exhaust energy back to the engine output power.
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Turbocharging system with integral assisting electric motor and cooling system therefor
TL;DR: In this paper, an integral motor is positioned on the turbocharging shaft to add power to the turbo-charging shaft, especially at low exhaust gas volume, and cooling for this motor includes circulation of engine oil there around and may include insulation to limit heat inflow from the turbine.
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TL;DR: A turbocharger for an internal combustion engine can provide a two-stage compressor with movable stator blades to shift the compressor performance and match the air output of the turbochargers to varying air requirements as discussed by the authors.