Hill hold for an electric vehicle
First Claim
1. 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.
2 Assignments
0 Petitions
Accused Products
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.
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Citations
15 Claims
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1. A method for braking an electric utility vehicle including a motor and an electromechanical brake, comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An electric utility vehicle, comprising:
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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. - View Dependent Claims (9, 10, 11, 12, 13)
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14. An electric utility vehicle, comprising:
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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. - View Dependent Claims (15)
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Specification