Hill hold for an electric vehicle
AssigneeTextron Inc.
InventorsOliver A. Bell, Jr., Warren W. 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.
Claims15
A method for braking an electric utility vehicle including a motor and an electromechanical brake, comprising:
- 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 after a parking brake function is disabled or disengaged when the electric utility vehicle achieves a first predetermined speed;
- 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 to indicate a command to increase the speed of the electric utility vehicle above a second predetermined speed;
- and
- disengaging the parking brake function after the commanding.
An electric utility vehicle, comprising:
- an electromechanical brake that functions as a parking brake based on a speed of the electric utility vehicle;
- a motor that drives the electric utility vehicle;
- and
- a controller that controls the motor and the electromechanical brake, that stores a value indicative of an amount of a current provided to the motor before engaging the parking brake function of the electromechanical brake to maintain the electric utility vehicle in a stopped state after the electromechanical brake is disabled or disengaged when the electric utility vehicle achieves a first predetermined speed, and that supplies current to the motor at the stored value when the controller indicates a command to increase the speed of the electric utility vehicle above a second predetermined speed.
An electric utility vehicle, comprising:
- a means for electromechanical braking that functions as a parking brake based on a speed of the electric utility vehicle;
- a motor means that drives the electric utility vehicle;
- and
- a controller that controls the motor and the electromechanical brake, that stores a value indicative of an amount of a current provided to the motor before engaging the parking brake function of the electromechanical brake to maintain the electric utility vehicle in a stopped state after the electromechanical brake is disabled or disengaged when the electric utility vehicle achieves a first predetermined speed, and that supplies current to the motor at the stored value when the controller indicates a command to increase the speed of the electric utility vehicle above a second predetermined speed.
Dependencies are inferred from the claim text.