A braking system operable independent of driver input, where the braking system includes a primary brake system, a secondary brake system, a primary controller controlling fluid pressure in the primary brake system, and a secondary controller controlling fluid pressure in the secondary brake system independently of the primary controller. There is also an actuator which is part of the primary brake system, where the actuator is controlled by the primary controller. A reservoir is in fluid communication with both the primary brake system and the secondary brake system, to supply fluid to both the primary brake system and the secondary brake system. The primary controller selectively actuates the actuator to control the fluid pressure in the primary brake system independently of driver input, to provide braking capability to a fully autonomous driving vehicle.

A wheel brake apparatus for implementing a braking operation via a hydraulic service brake and for implementing a braking operation via an electromechanical parking brake includes at least two pressing elements and a brake caliper. The at least two pressing elements are configured for achieving a braking effect by way of pressing a brake lining against a brake disk. The brake caliper is configured for supporting the at least two pressing elements. The service brake and the parking brake have separate pressing elements. The pressing element of the service brake and the pressing element of the parking brake are attached to the same brake caliper.

Hydraulic transmission apparatus (20) including a pump (24) having a variable cylinder capacity and feeding one or more hydraulic motors (26A, 26B), and a control unit (50). In the apparatus, the feed and discharge orifices of the motors are arranged in such a manner that, when the pressures at said orifices are equal, the outlet torque from the motors is zero. To make the apparatus inactive, without physically bypassing the motors, the control unit is suitable for operating the apparatus in a torque-free mode by regulating the cylinder capacity of the pump in such a manner that the pressures at said feed and discharge orifices remain substantially equal.

A steering system which is capable of being controlled by a redundant brake system, which includes a primary brake control module, a secondary brake control module, and a plurality of brake units controlled by the primary brake control module or the secondary brake control module. There is at least one hydraulic motor connected to a component of the steering system, and the fluid pressure in the hydraulic motor is controlled by the secondary brake control module. The wheels of the steering system are configured to make a right-hand turn when the secondary brake control module operates the hydraulic motor during a first mode of operation, and the wheels of the steering system are configured to make a left-hand turn when the secondary brake control module operates the hydraulic motor during a second mode of operation.

A brake actuation unit (1) having a master brake cylinder (2) and a pressure-medium reservoir (4); a pressure provision device (5), having a piston (51) actuated by an electric motor (35), wherein the piston delimits a pressure chamber (50); first and second groups of electrically actuatable valves (6a-6d, 7a-7d); and an electronic control unit (12, 12). The electric motor has at least two independently operable drive units, each having at least one winding, for driving the electric motor. The electronic control unit has a first microcontroller (201) and a second microcontroller (301). The first microcontroller controls (205) one of the drive units and the second microcontroller controls (305) the other of the drive units. The first and second microcontrollers control (207, 307) the second group of valves.

Systems and methods are provided testing a vehicle braking system. The method includes determining a nominal brake system parameter of the brake system during a braking operation. A first testing brake operation is performed and a first brake system parameter is determined based on the first testing brake operation. A tested brake system parameter is determined based on the first testing system parameter and the tested brake system parameter is compared to the nominal brake system parameter. A brake system compliance suspicion value of the vehicle braking system is then set based on the comparison.

A work vehicle is provided with a body and ground engaging means configured to allow motion of the body on ground, and braking means for locking ground engaging means, and an operative element carried by said body and configured to execute a specific working operation. The work vehicle further includes a first and a second joystick configured to respectively control the operation of ground engaging means and operative element based on movement of joystick and first and second input means configured respectively to control the activation/deactivation of parking brake functionality of the work vehicle and the activation/deactivation of hydraulic systems of work vehicle. Furthermore, the work vehicle includes a control system configured to receive second and first control signals derived from first and second input means respectively and each configured to assume a respective activation value and a respective deactivation value and inhibit the operation of the joystick linked to the operation of ground engaging means if both control signals are in activation state.

Systems and methods are provided testing a vehicle braking system. The method includes determining a nominal brake system parameter of the brake system during a braking operation. A first testing brake operation is performed and a first brake system parameter is determined based on the first testing brake operation. A tested brake system parameter is determined based on the first testing system parameter and the tested brake system parameter is compared to the nominal brake system parameter. A brake system compliance suspicion value of the vehicle braking system is then set based on the comparison.

Disclosed herein are a safety brake device and method for safety braking using a hydraulic brake system including hydraulic wheel brakes of an autonomous vehicle, the autonomous vehicle further having an electrical power supply and signaling system for enabling an autonomous drive mode. The method comprises pressurizing a pressure storage canister containing brake fluid, monitoring electrical power supplies and signaling of the autonomous vehicle, and releasing brake fluid into the hydraulic brake system of the autonomous vehicle to activate the wheel brakes thereof upon determining loss of at least one of electrical power and signaling of the autonomous vehicle. Disclosed herein is also an autonomous vehicle comprising a safety brake.

Examples relate to a hydraulic control unit that includes a pump for increasing a hydraulic pressure of a brake fluid. The hydraulic control unit includes a discharge channel from which the brake fluid pressurized by a pump is discharged, a pulsation reducing unit disposed in the middle of the discharge channel, and a controller controlling the pump and the pulsation reducing unit. The pulsation reducing unit includes a valve housing, a fixed core fixed to the valve housing, a movable core received in the valve housing in an axially movable manner, a closing member interlocking with the movable core and closing the discharge channel, a coil disposed in a manner to surround the valve housing and the fixed core, and an inflow chamber formed by the valve housing and one end surface of the movable core, into which the brake fluid flows, and whose volume can vary.