A control device for a hydraulic brake system of a vehicle; as a reaction to a supplied warning signal as to a probable, early request for braking, the control device being configured to force at least one wheel exhaust valve of the hydraulic brake system into an open position in an undelayed or delayed manner and to activate a motor of a motorized hydraulic device of the hydraulic brake system; and as a reaction to a supplied brake setpoint signal as to requested braking with a current, setpoint deceleration not equal to zero, the control device being configured to force the at least one wheel exhaust valve into a closed position and to control the motor according to the setpoint deceleration currently requested. The present invention also relates to a hydraulic brake system for a vehicle and to a method for operating a hydraulic brake system of a vehicle.

A control device for a hydraulic brake system of a vehicle; as a reaction to a supplied warning signal as to a probable, early request for braking, the control device being configured to force at least one wheel exhaust valve of the hydraulic brake system into an open position in an undelayed or delayed manner and to activate a motor of a motorized hydraulic device of the hydraulic brake system; and as a reaction to a supplied brake setpoint signal as to requested braking with a current, setpoint deceleration not equal to zero, the control device being configured to force the at least one wheel exhaust valve into a closed position and to control the motor according to the setpoint deceleration currently requested. The present invention also relates to a hydraulic brake system for a vehicle and to a method for operating a hydraulic brake system of a vehicle.

A vehicle brake device provided with a hydraulic pressure generating portion, an actuator and a controlling portion which maintains a driving force of the driving portion when a control subject pressure in a control subject chamber is within a dead zone, wherein the control subject pressure varies in response to a variation of the master pressure and a pulsation is generated in the master pressure accompanying an operation of the actuator. The vehicle brake device further includes a rigidity information obtaining portion which obtains a rigidity information and a dead zone setting portion which sets the dead zone based on the rigidity information obtained by the rigidity information obtaining portion such that the higher the rigidity of the control subject chamber, or the higher the probability of rigidity increase of the control subject chamber, the wider the dead zone is set.

A vehicle brake device provided with a hydraulic pressure generating portion, an actuator and a controlling portion which maintains a driving force of the driving portion when a control subject pressure in a control subject chamber is within a dead zone, wherein the control subject pressure varies in response to a variation of the master pressure and a pulsation is generated in the master pressure accompanying an operation of the actuator. The vehicle brake device further includes a rigidity information obtaining portion which obtains a rigidity information and a dead zone setting portion which sets the dead zone based on the rigidity information obtained by the rigidity information obtaining portion such that the higher the rigidity of the control subject chamber, or the higher the probability of rigidity increase of the control subject chamber, the wider the dead zone is set.

A control device for a hydraulic brake system of a vehicle; as a reaction to a supplied warning signal as to a probable, early request for braking, the control device being configured to force at least one wheel exhaust valve of the hydraulic brake system into an open position in an undelayed or delayed manner and to activate a motor of a motorized hydraulic device of the hydraulic brake system; and as a reaction to a supplied brake setpoint signal as to requested braking with a current, setpoint deceleration not equal to zero, the control device being configured to force the at least one wheel exhaust valve into a closed position and to control the motor according to the setpoint deceleration currently requested. The present invention also relates to a hydraulic brake system for a vehicle and to a method for operating a hydraulic brake system of a vehicle.

A control device for a hydraulic brake system of a vehicle; as a reaction to a supplied warning signal as to a probable, early request for braking, the control device being configured to force at least one wheel exhaust valve of the hydraulic brake system into an open position in an undelayed or delayed manner and to activate a motor of a motorized hydraulic device of the hydraulic brake system; and as a reaction to a supplied brake setpoint signal as to requested braking with a current, setpoint deceleration not equal to zero, the control device being configured to force the at least one wheel exhaust valve into a closed position and to control the motor according to the setpoint deceleration currently requested. The present invention also relates to a hydraulic brake system for a vehicle and to a method for operating a hydraulic brake system of a vehicle.

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.

A vehicle brake device provided with a hydraulic pressure generating portion, an actuator and a controlling portion which maintains a driving force of the driving portion when a control subject pressure in a control subject chamber is within a dead zone, wherein the control subject pressure varies in response to a variation of the master pressure and a pulsation is generated in the master pressure accompanying an operation of the actuator. The vehicle brake device further includes a rigidity information obtaining portion which obtains a rigidity information and a dead zone setting portion which sets the dead zone based on the rigidity information obtained by the rigidity information obtaining portion such that the higher the rigidity of the control subject chamber, or the higher the probability of rigidity increase of the control subject chamber, the wider the dead zone is set.

A vehicle brake device provided with a hydraulic pressure generating portion, an actuator and a controlling portion which maintains a driving force of the driving portion when a control subject pressure in a control subject chamber is within a dead zone, wherein the control subject pressure varies in response to a variation of the master pressure and a pulsation is generated in the master pressure accompanying an operation of the actuator. The vehicle brake device further includes a rigidity information obtaining portion which obtains a rigidity information and a dead zone setting portion which sets the dead zone based on the rigidity information obtained by the rigidity information obtaining portion such that the higher the rigidity of the control subject chamber, or the higher the probability of rigidity increase of the control subject chamber, the wider the dead zone is set.

The main innovation in the braking system presented for patent protection is that it avoids the use of a main brake valve, as well as the other cocks and valves used presently in the air brakes. The pressure in the brake chambers is regulated hydraulically or electrically at the input of each brake chamber individually. This minimizes, to the extent possible, the delay in the execution of the brake commands given by the driver. ABS control will also be individual for each wheel and will work several times faster and more accurately. Overall, the system will use much fewer air ducts, will be simpler and more secure. The diagnostics will be much faster and easier. For reequipping the vehicles with the presented braking system, no changes in their design are required.