Test stands for electric motor to be connected to front end accessory drive of internal combustion engine
AssigneeHoriba Instruments, Inc.
InventorNorman Malcolm Newberger
Life of this patent
Estimating the term…
Abstract
A dynamometer system includes a prime mover dynamometer and a gearbox. The prime mover dynamometer includes a primary output configured to be coupled to a drivetrain that represents a portion of a vehicle powertrain, a secondary output having a fixed speed relationship with the primary output, and a controller. The gearbox is coupled to the secondary output and configured to be coupled to an electric motor. The controller alters a speed and torque of the outputs based on a calculated speed and torque associated with a simulated internal combustion engine that represents another portion of the vehicle powertrain to impart speed oscillations into the electric motor and to impart torque oscillations into the drivetrain.
Claims11
A dynamometer system comprising:
- a prime mover dynamometer including a primary output mechanically coupled to a drivetrain, a secondary output having a fixed speed relationship with the primary output, and a controller;
- and
- a gearbox mechanically coupled to the secondary output and mechanically coupled to an electric motor, wherein the controller is programmed to alter a speed and torque of the outputs based on a calculated speed and torque associated with a simulated internal combustion engine to impart speed oscillations into the electric motor via the gearbox and to impart torque oscillations into the drivetrain, and wherein the drivetrain and simulated internal combustion engine represent a vehicle powertrain.
A method for controlling a dynamometer comprising:
- altering by a controller a speed and torque of a prime mover dynamometer primary output coupled to a drivetrain and a prime mover dynamometer secondary output that has a fixed speed relationship with the prime mover dynamometer primary output based on a calculated speed and torque associated with a simulated internal combustion engine to impart speed oscillations into an electric motor coupled to the prime mover dynamometer secondary output via a gearbox and to impart torque oscillations into the drivetrain.
A dynamometer system comprising:
- a prime mover dynamometer including a primary output coupled to a drivetrain, a secondary output having a fixed speed relationship with the primary output, and a controller;
- and
- a gearbox coupled to the secondary output and coupled to an electric motor, wherein the controller is programmed to alter a speed and torque of the outputs based on a calculated speed and torque associated with a simulated internal combustion engine to impart speed oscillations into the electric motor and to impart torque oscillations into the drivetrain.
Dependencies are inferred from the claim text.