System and method for controlling rollback of a work vehicle
AssigneeCNH Industrial America LLC
InventorsGarth Harvey Bulgrien, Peter J. Dix, Pawel Kuros
Life of this patent
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Abstract
A method for controlling rollback of a work vehicle may include receiving a signal indicating that a pedal of the work vehicle has been depressed, wherein the work vehicle is initially traveling in a first direction up an inclined surface such that at least one clutch of the transmission is engaged. In addition, the method may include reducing a pressure within the at least one clutch after receiving the signal in order to decelerate the work vehicle in the first direction and engaging a parking brake of the work vehicle as the work vehicle reverses direction and travels in a second direction down the inclined surface.
Claims20
A method for controlling rollback of a work vehicle when the work vehicle is operating on an inclined surface, the method comprising:
- receiving, by a processor-based device, a signal indicating that a pedal of the work vehicle has been depressed, the work vehicle initially traveling in a first direction up the inclined surface such that at least one clutch of a transmission of the work vehicle is engaged;
- reducing, by the processor-based device, a pressure within the at least one clutch after receiving the signal in order to decelerate the work vehicle in the first direction;
- and
- regulating, by the processor-based device, a pressure within a parking brake of the work vehicle as the work vehicle reverses direction and travels in a second direction down the inclined surface so as to control a rollback speed of the work vehicle in the second direction while the pedal is being depressed to provide for controlled rollback of the work vehicle.
A system for controlling rollback of a work vehicle operating on an inclined surface, the system comprising:
- a transmission including at least one clutch, the transmission being configured such that the at least one clutch is engaged as the work vehicle travels up the inclined surface in a first direction;
- a pedal configured to he depressed by an operator of the work vehicle;
- a parking brake configured to control a rollback speed of the work vehicle;
- and
- a controller communicatively coupled to the transmission, the pedal and the parking brake, the controller being configured to:
- receive a signal indicating that the pedal has been depressed;
- reduce a pressure within the at least one clutch after the signal is received in order to decelerate the work vehicle in the first direction;
- and
- regulate a pressure within the parking brake as the work vehicle reverses direction and travels in a second direction down the inclined surface so as to control the rollback speed of the work vehicle in the second direction while the pedal is being depressed to provide for controlled rollback of the work vehicle.
Dependencies are inferred from the claim text.