A system for controlling a brake of a unit hauled by a work vehicle may generally include a valve assembly. When a speed of the work vehicle exceeds a predetermined speed threshold, the valve assembly may be configured to allow the brake to be actuated when first and second brake pedals of the work vehicle are depressed, either individually or simultaneously. However, when the speed of the work vehicle is less than the predetermined speed threshold, the valve assembly may only be configured to allow the brake to be actuated when both of the first and second brake pedals are depressed simultaneously.

A system for controlling a brake of a unit hauled by a work vehicle may generally include a valve assembly. When a speed of the work vehicle exceeds a predetermined speed threshold, the valve assembly may be configured to allow the brake to be actuated when first and second brake pedals of the work vehicle are depressed, either individually or simultaneously. However, when the speed of the work vehicle is less than the predetermined speed threshold, the valve assembly may only be configured to allow the brake to be actuated when both of the first and second brake pedals are depressed simultaneously.

A dig system which allows for a vehicle to perform a dig maneuver, without sacrificing drivability. An actuator places the dig system in one of four different modes of operation, where the front wheels are placed in either a first configuration or a second configuration, where the front wheels are positioned at a desired steering angle, and one of the front or rear wheels is braked and prevented from rotating. The transfer case transfers power to one or more of the non-braked wheels, and disconnects from the remaining wheels. One or more of the non-braked wheels are rotated such that the vehicle pivots about an axis which extends through one of the wheels. One of the rear wheels is braked when performing a front dig maneuver, and one of the front wheels is be braked when performing a reverse dig maneuver.

A control system for a vehicle having a drive system, the drive system having a forward drive mode, a reverse drive mode, and a neutral mode. The control system may include an operator control operable by the vehicle user to control whether the vehicle is in a drive mode or a neutral mode. The control system may be configured, based on whether the vehicle operator is actively controlling the operator control, to automatically engage/disengage a vehicle brake, detect operator presence or absence and provide neutral lockout for preventing starting of the vehicle engine.

A brake control system is provided for a vehicle having steerable front wheels, left and right brake units for braking left and right rear wheels, and a single manually operated brake input device. A main brake valve has a supply port, a return port, an outlet and a valve spool for controlling communication therebetween. The valve spool is coupled to a brake input device. A normally open left turn valve controls communication between the outlet and the left brake unit. A normally open right turn valve controls communication between the outlet and the right brake unit. A normally open balance valve controls communication between the left and right brake units. The system includes a brake input device sensor, a turn angle sensor and a vehicle speed sensor. A control unit controls the left and right turn valves and the balance valve as a function of signals from the sensors.

A steering brake locking system for a vehicle, such as an agricultural tractor, has at least first and second adjacent steering brake pedals, and a locking pin arranged to selectively lock the pedals together. The locking pin and at least a portion of the first and second pedals are formed from a conductive material, such that an electrically conductive path is formed between the first and second pedals through the locking pin when the pin is used to lock the pedals together. The locking status of the pedals can be determined by measuring the electrical conductivity between the first and second pedals.

A control apparatus is configured to control a brake of a unit hauled by a vehicle. The vehicle includes a plurality of brakes for braking the wheels of the vehicle, a trailer brake for braking the hauled unit, and a parking brake for keeping the vehicle braked while it is stationary. The control apparatus includes a line for sending a fluid to the trailer brake through a control valve in order to brake the hauled unit in certain working conditions, a further line for sending a further fluid to the trailer brake in order to activate the trailer brake in other working conditions, and a valve device for controlling flow of the further fluid in the further line, the valve device being responsive to a signal indicative of the status of the parking brake.

A control apparatus is configured to control a brake of a unit hauled by a vehicle. The vehicle includes a plurality of brakes for braking the wheels of the vehicle, a trailer brake for braking the hauled unit, and a parking brake for keeping the vehicle braked while it is stationary. The control apparatus includes a line for sending a fluid to the trailer brake through a control valve in order to brake the hauled unit in certain working conditions, a further line for sending a further fluid to the trailer brake in order to activate the trailer brake in other working conditions, and a valve device for controlling flow of the further fluid in the further line, the valve device being responsive to a signal indicative of the status of the parking brake.

A brake control system is provided for a vehicle having steerable front wheels, left and right brake units for braking left and right rear wheels, and a single manually operated brake input device. A main brake valve has a supply port, a return port, an outlet and a valve spool for controlling communication therebetween. The valve spool is coupled to brake input device. A normally open left turn valve controls communication between the outlet and the left brake unit. A normally open right turn valve controls communication between the outlet and the right brake unit. A normally open balance valve controls communication between the left and right brake units. The system includes brake input device sensor, a turn angle sensor and a vehicle speed sensor. A control unit controls the left and right turn valves and the balance valve as a function of signals from the sensors.

Systems and apparatuses include a service brake system structured to selectively provide pressurized hydraulic fluid to a left service brake and a right service brake, and selectively output pressure to a pilot port; a hydraulic trailer brake system including a solenoid actuated intelligent brake turn actuator selectively allowing or inhibiting a flow of pressurized hydraulic fluid to a trailer brake work port; and one or more processing circuits that determine a current vehicle speed based on the information received from a wheel speed sensor, compare the current vehicle speed to a brake turn threshold speed, and actuate the intelligent brake turn actuator to inhibit the flow of pressurized hydraulic fluid to the trailer brake work port when the current vehicle speed is less than the brake turn threshold speed.