Electric boost device control for turbocharger
AssigneeGarrett Transportation I Inc.
InventorsMichael Robert Uchanski, Malay Maniar, Andrew Love, Daniele Zecchetti, Jungsik Yim
Life of this patent
Estimating the term…
Abstract
New and/or alternative approaches to performance control in an engine system having a compressor configured to receive torque from each of a turbine placed in an exhaust output of an engine and an electric motor. A control unit for the electric motor, referred to as an ETurbo controller, is provided with each of a speed control signal and a torque control signal from an engine control unit. The ETurbo controller is configured to use the torque control signal and speed control signal to operate the electric motor without causing the compressor to exceed a speed boundary.
Claims20
A system comprising:
- an engine having an air input and an exhaust output;
- a turbocharger having a compressor coupled to the air input, a turbine coupled to the exhaust output, and an electric motor, wherein the compressor is configured to receive force selectively from either or both of the turbine and the electric motor, the electric motor having an ETurbo controller;
- and
- an engine control unit (ECU) for controlling operation of the internal combustion engine and the turbocharger;
- wherein:
- the ECU is configured to determine and provide a torque control signal and a speed control signal to the ETurbo controller to enable the ETurbo controller to manage operation of the electric motor;
- and
- the ETurbo controller is configured to use the torque control signal to manage operation of the electric motor without allowing compressor speed to exceed a maximum speed determined by the speed control signal.
A system comprising:
- an engine having an air input and an exhaust output;
- a turbocharger having a compressor coupled to the air input, a turbine coupled to the exhaust output, and an electric motor, wherein the compressor is configured to receive torque selectively from either or both of the turbine and the electric motor, the electric motor having an ETurbo controller;
- and
- an engine control unit (ECU) for controlling operation of the internal combustion engine and the turbocharger;
- wherein:
- the ECU is configured to determine and provide a torque control signal, a speed control signal, and a speed boundary to the ETurbo controller to enable the ETurbo controller to manage operation of the electric motor;
- and
- the ETurbo controller is configured to use the torque control signal to manage operation of the electric motor without allowing compressor speed to exceed the speed boundary.
A charger system for providing compressed air to an engine having an air input and an exhaust output, comprising:
- a compressor having an air input for receiving air and an output for issuing compressed air to the air input of the engine;
- a turbine having air input for receiving air from the exhaust output of the engine to generate torque, the turbine being linked to the compressor to provide the generated torque to the compressor;
- an electric motor coupled to the compressor and configured to apply force to the compressor to add to the torque provided by the turbine;
- and
- an ETurbo controller coupled to the electric motor to control operations thereof, the ETurbo controller configured to receive, from an engine control unit (ECU), at least a torque control signal and a speed control signal, and to use the torque control signal to manage operation of the electric motor without allowing compressor speed to exceed a speed boundary determined by the speed control signal.
Dependencies are inferred from the claim text.