The invention relates to an axle structure for a motor vehicle, preferably a utility vehicle, for installing a first wheel and a second wheel. The axle structure has a longitudinal axis and defines a vertical reference plane which extends along the longitudinal axis, and the axle structure comprises a first brake cylinder, which preferably has a first central line and is preferably used to brake the first wheel, and a second brake cylinder, which preferably has a second central line and is preferably used to brake the second wheel. The axle structure is characterized in particular in that the first brake cylinder is arranged on one side of the reference plane, and the second brake cylinder is arranged on the other side of the reference plane.

The disclosure relates to a pneumatic braking system comprising a service brake actuator; an electro-pneumatic modulator unit for receiving an air control pressure representative of a driver's braking request; delivering, by a regulation unit, a modulated air pressure to a service brake chamber; a parking brake actuator; a parking brake unit for delivering a second air pressure to a parking brake pneumatic chamber; and an isolation device for when the isolation device is electrically energized, preventing the delivery of the air control pressure to the regulation unit, and for when the isolation device is not electrically energized, allowing the delivery of air control pressure to the regulation unit when the second air pressure is higher than a threshold, and preventing the delivery of air control pressure to the regulation unit when the second air pressure is lower than the threshold.

A parking brake apparatus is provided for an autonomously drivable vehicle having components of a parking brake system for applying a parking brake. The parking brake apparatus comprises a first controller arranged to provide one or more control signals to be applied to components of the parking brake system to apply the parking brake in response to a signal requesting the parking brake to be applied. The parking brake apparatus also comprises a second controller arranged to provide one or more control signals to be applied to other components of the parking brake system to apply the parking brake in response to unavailability of the first controller to cause the parking brake to be applied.

A parking brake apparatus is provided for an autonomously drivable vehicle having components of a parking brake system for applying a parking brake. The parking brake apparatus comprises a first controller arranged to provide one or more control signals to be applied to components of the parking brake system to apply the parking brake in response to a signal requesting the parking brake to be applied. The parking brake apparatus also comprises a second controller arranged to provide one or more control signals to be applied to other components of the parking brake system to apply the parking brake in response to unavailability of the first controller to cause the parking brake to be applied.

An electromechanical brake pressure generator for a hydraulic braking system of a vehicle. The electromechanical brake pressure generator includes at least one threaded drive system for converting a drive-side rotary motion into a translatory motion for the brake pressure generation. The threaded drive system includes a rotatable spindle nut, and a spindle cooperating with a thread of the spindle nut so that the spindle is axially displaceable with a rotation of the spindle nut. The threaded drive system includes a drive wheel, which is non-rotatably situated on the spindle nut and via which the spindle nut is connected to the electric motor, the drive wheel and the spindle nut being designed as separate plastic components, including a plurality of mutually corresponding connecting structures which, in the assembled state, engage one another in a form-locked manner in such a way that a torque required for rotating the spindle nut is transmittable.

An electromechanical brake pressure generator for a hydraulic braking system of a vehicle. The electromechanical brake pressure generator includes at least one threaded drive system for converting a drive-side rotary motion into a translatory motion for the brake pressure generation. The threaded drive system includes a rotatable spindle nut, and a spindle cooperating with a thread of the spindle nut so that the spindle is axially displaceable with a rotation of the spindle nut. The threaded drive system includes a drive wheel, which is non-rotatably situated on the spindle nut and via which the spindle nut is connected to the electric motor, the drive wheel and the spindle nut being designed as separate plastic components, including a plurality of mutually corresponding connecting structures which, in the assembled state, engage one another in a form-locked manner in such a way that a torque required for rotating the spindle nut is transmittable.

A brake release system for a vehicle is described to transfer mechanical movement between two hydraulic actuators. The system includes a first hydraulic system on a removable portion of the vehicle and a second hydraulic system on a main chassis of the vehicle. The two hydraulic systems are mechanically engaged with each other where the removable portion of the vehicle attaches to the main chassis. In this way, a force applied to the removable portion of the vehicle when the vehicle's tow hook is engaged may be transferred to release the parking brake on the main chassis without a hydraulic connection between the removable portion and the main chassis. This may be useful when a removable battery frame with a tow hook makes up a separable rear portion of an electric vehicle, allowing the battery frame to be quickly and efficiently removed from the main chassis of the vehicle.

A brake release system for a vehicle is described to transfer mechanical movement between two hydraulic actuators. The system includes a first hydraulic system on a removable portion of the vehicle and a second hydraulic system on a main chassis of the vehicle. The two hydraulic systems are mechanically engaged with each other where the removable portion of the vehicle attaches to the main chassis. In this way, a force applied to the removable portion of the vehicle when the vehicle's tow hook is engaged may be transferred to release the parking brake on the main chassis without a hydraulic connection between the removable portion and the main chassis. This may be useful when a removable battery frame with a tow hook makes up a separable rear portion of an electric vehicle, allowing the battery frame to be quickly and efficiently removed from the main chassis of the vehicle.

A sealing assembly for installation on a port of a spring brake actuator includes a plug, a one-way valve and a cap. The plug receives the one-way valve for providing one-way air flow through the orifices and maintaining about two psi in the spring brake chamber at zero stroke. An elastomeric piece is affixed to a first set of segments of the plug for sealing against an inner surface of the port. The cap has arms sized to extend around a third set of segments of the plug and snap onto the plug. A fourth set of segments of the plug elastically deform so the sealing assembly can be installed and removed from the port easily.

A sealing assembly for installation on a port of a spring brake actuator includes a plug, a one-way valve and a cap. The plug receives the one-way valve for providing one-way air flow through the orifices and maintaining about two psi in the spring brake chamber at zero stroke. An elastomeric piece is affixed to a first set of segments of the plug for sealing against an inner surface of the port. The cap has arms sized to extend around a third set of segments of the plug and snap onto the plug. A fourth set of segments of the plug elastically deform so the sealing assembly can be installed and removed from the port easily.