초록 ▼

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 indivi

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.

대표청구항 ▼

[ What is claimed is:] [1.] A motor assisted variable geometry turbocharging system comprising;a turbo expander for being driven by engine exhaust gas;a turbo compressor for drawing air in an inlet and delivering air under pressure to the engine, said turbo compressor and turbo expander being connec

[ What is claimed is:] [1.] A motor assisted variable geometry turbocharging system comprising;a turbo expander for being driven by engine exhaust gas;a turbo compressor for drawing air in an inlet and delivering air under pressure to the engine, said turbo compressor and turbo expander being connected together to rotate together;air inlet control vanes on said compressor air inlet for providing compressor inlet pre-whirl, said vanes being variable to control the amount of pre-whirl;a vane control for controlling said vanes;a motor connected to rotate with said compressor to supply power to said compressor to drive said compressor at low exhaust gas flow;a motor control to control said motor, said motor control being connected to said vane control so that said motor and said vanes are both controlled by said motor controller; andan engine control responsive to engine conditions, said engine control being connected to said motor control.