An actuation device for a hydraulic actuation system, e.g., a motor vehicle brake or an electrified clutch actuator, may include a connection for an actuation device; a pressure supply device, driven by an electromotor drive, in the form of a piston or double-stroke piston pump; a piston cylinder unit that may be actuated by means of the actuation device; and an electronic control unit. An axis of the piston cylinder unit and an axis of the pressure supply device may be arranged in parallel.

An actuation device for a hydraulic actuation system, e.g., a motor vehicle brake or an electrified clutch actuator, may include a connection for an actuation device; a pressure supply device, driven by an electromotor drive, in the form of a piston or double-stroke piston pump; a piston cylinder unit that may be actuated by means of the actuation device; and an electronic control unit. An axis of the piston cylinder unit and an axis of the pressure supply device may be arranged in parallel.

A braking system for an air brake vehicle includes a source of working pressure and a source of vacuum pressure. The system includes at least one brake actuator having a first chamber for receiving the working pressure, a second chamber for receiving the vacuum pressure; and a push rod that moves linearly in response to pressure in the first chamber and second chamber. A brake assembly is mechanically connected to the push rod for applying friction to a wheel end of a vehicle in response to the linear movement of the push rod.

A redundant governor apparatus is provided for a vehicle air brake charging system. The apparatus comprises a first governor and a second governor. The apparatus also comprises a number of components arranged to enable (i) the first governor to act as primary and the second governor to act as backup to the first governor when the first governor is unable to act as primary, and (ii) the second governor to act as primary and the first governor to act as backup to the second governor when the second governor is unable to act as primary.

A redundant governor apparatus is provided for a vehicle air brake charging system. The apparatus comprises a first governor and a second governor. The apparatus also comprises a number of components arranged to enable (i) the first governor to act as primary and the second governor to act as backup to the first governor when the first governor is unable to act as primary, and (ii) the second governor to act as primary and the first governor to act as backup to the second governor when the second governor is unable to act as primary.

A system for a utility vehicle has a compressor, an electric motor and an electronic drive system. The electric motor drives the compressor. The electric motor and the electronic drive system have a common housing. The electric motor has a rotor which at least partially surrounds the drive shaft of the compressor.

A system for a utility vehicle has a compressor, an electric motor and an electronic drive system. The electric motor drives the compressor. The electric motor and the electronic drive system have a common housing. The electric motor has a rotor which at least partially surrounds the drive shaft of the compressor.

An arrangement of screws for a screw compressor for a utility vehicle includes at least one female screw and at least one male screw. The female screw and the male screw each have teeth that engage with one another. The teeth of the female screw have a roll-off tooth flank which is provided for rolling-off a tooth flank of the male screw. The roll-off tooth flank has a convexly rounded roll-off tip region in the tip region, which has a first radius, wherein a tooth base is provided between two neighboring teeth of the female screw, which is connected to the roll-off tip region via a flat transition region. The tooth base between two teeth of the female screw is substantially concavely rounded and has a second radius, wherein the second radius is approx. 2.5 to 3.5 times greater than the first radius.

An arrangement of screws for a screw compressor for a utility vehicle includes at least one female screw and at least one male screw. The female screw and the male screw each have teeth that engage with one another. The teeth of the female screw have a roll-off tooth flank which is provided for rolling-off a tooth flank of the male screw. The roll-off tooth flank has a convexly rounded roll-off tip region in the tip region, which has a first radius, wherein a tooth base is provided between two neighboring teeth of the female screw, which is connected to the roll-off tip region via a flat transition region. The tooth base between two teeth of the female screw is substantially concavely rounded and has a second radius, wherein the second radius is approx. 2.5 to 3.5 times greater than the first radius.

A plunger pump having improved durability without leading to a reduction in productivity is provided. A pump apparatus includes a sliding portion provided between a stopper portion and an eccentric cam in a direction of an eccentric central axis and having a lower frictional coefficient between the sliding portion and the eccentric cam than a frictional coefficient between the stopper portion and the eccentric cam.