Hill hold for an electric vehicle
AssigneeTextron Innovations Inc.
InventorsOliver A. Bell, Jr., Warren Clark
Life of this patent
Estimating the term…
Abstract
A method for braking an electric utility vehicle including a motor and an electromechanical brake. The method includes storing a value indicative of at least one of an amount of current, voltage, and power that is commanded to a motor of the electric utility vehicle to maintain the electric utility vehicle in a stopped state; engaging a parking brake function of an electromechanical brake after the storing; disabling the motor after the engaging; commanding the at least one of the current, voltage, and power to the motor at the stored value when an accelerator pedal is depressed; and disengaging the parking brake function after the commanding.
Claims7
A system for controlling dynamic braking of an electric utility vehicle, comprising:
- a brake pedal position sensor that generates a brake position signal corresponding to a position of a brake pedal;
- an accelerator position sensor that generates an accelerator signal corresponding to a position of an accelerator pedal;
- and
- a controller that receives the brake position signal and the accelerator signal and transmits a motor control signal to a motor based on the brake position signal and the accelerator pedal signal, and the controller stores a value indicative of an amount of at least one of current, voltage, and power to maintain electric utility vehicle in a stopped state on the hill after the park brake function is disabled or disengaged when the electric utility vehicle achieves a first predetermined speed, and the controller generates the motor control signal in accordance with the stored value when the accelerator signal indicates a command to increase the speed of the electric utility vehicle above a second predetermined speed.
Dependencies are inferred from the claim text.