Abstract: A motor vehicle has a steering axle, a drive axle and a lift axle having an actuator for lifting and lowering the same. The wheels of the drive axle can be electrically driven, at least in a supporting manner, via an electric machine operable as an electric motor and as a generator, and the wheels can be driven in a generating manner in a recuperation operation. The electric machine is connected to an accumulator and to a control and/or regulation device to control the operation of the lift axle. The device is connected to sensors for wheel slip detection at the drive axle. The device is configured such that, during a recuperation operation, it can send a command to the actuator to lift the lift axle and thereby unload the wheels thereof, if there is wheel slip at least at one wheel of the drive axle.

Abstract: A compressor includes a low pressure stage having a low pressure cylinder, a high pressure stage having a high pressure cylinder, a low pressure piston guided in an axially movable manner in the low pressure cylinder, a high pressure piston guided in an axially movable manner in the high pressure cylinder, a piston rod rigidly connecting the low pressure piston and the high pressure piston, and a sliding block guide. The sliding block guide includes a recess arranged in the piston rod and further includes two substantially parallel sliding block tracks. One of the sliding block tracks has an arc-shaped indentation in a central portion. The sliding block tracks are constructed and such that a movement of the low pressure piston and of the high pressure piston follows a piston stroke curve that deviates from a regular sinusoidal stroke curve.

Abstract: A motor vehicle has a steering axle, a drive axle and a lift axle having an actuator for lifting and lowering the same. The wheels of the drive axle can be electrically driven, at least in a supporting manner, via an electric machine operable as an electric motor and as a generator, and the wheels can be driven in a generating manner in a recuperation operation. The electric machine is connected to an accumulator and to a control and/or regulation device to control the operation of the lift axle. The device is connected to sensors for wheel slip detection at the drive axle. The device is configured such that, during a recuperation operation, it can send a command to the actuator to lift the lift axle and thereby unload the wheels thereof, if there is wheel slip at least at one wheel of the drive axle.

Abstract: A venting cap for a solenoid valve for compressed-air systems includes a carrier element configured to be arranged on an outlet tube of the solenoid valve and a sealing element arranged on the carrier element. The sealing element is in the form of a cap which engages radially and axially over the carrier element and which has a coaxially extending circular rim. The circular rim has on its inner side, adjacent to a free axial end, at least one receiver for at least one radially outwardly projecting snap-in contour of a geometrically complementary form on the carrier element. The carrier element has a coaxially arranged hollow-cylindrical extension, which is configured to be fastened to the axial end of the outlet tube. The carrier element has a coaxial venting path connected to an exit opening via a labyrinthine sealing structure.

Abstract: A two-stage compressor of a compressed air supply device includes a low pressure stage having a low pressure cylinder, a high pressure stage having a high pressure cylinder, a low pressure piston guided in an axially movable manner in the low pressure cylinder, a high pressure piston guided in an axially movable manner in the high pressure cylinder, a piston rod rigidly connecting the low pressure piston and the high pressure piston, and a sliding block guide. The sliding block guide includes a recess arranged in the piston rod and further includes two substantially parallel sliding block tracks. One of the sliding block tracks has an arc-shaped indentation in a central portion. The sliding block tracks are constructed and such that a movement of the low pressure piston and of the high pressure piston follows a piston stroke curve that deviates from a regular sinusoidal stroke curve.

Abstract: A compressor arrangement for operating a compressed air supply installation includes a pneumatic compressor and an electric motor arranged inside a drive housing, the electric motor having an internal stator and an external outer rotor. The external outer rotor is arranged in a rotatable manner about the internal stator. The external outer rotor is supported in a rotatable manner about a center axis with respect to the drive housing via a bearing arrangement. The bearing arrangement has at least one bearing. The external outer rotor is supported by the bearing arrangement on an outer circumference of the outer rotor.

Abstract: A compressor arrangement for operating a compressed air supply installation includes a pneumatic compressor and an electric motor arranged inside a drive housing, the electric motor having an internal stator and an external outer rotor. The external outer rotor is arranged in a rotatable manner about the internal stator. The external outer rotor is supported in a rotatable manner about a center axis with respect to the drive housing via a bearing arrangement. The bearing arrangement has at least one bearing. The external outer rotor is supported by the bearing arrangement on an outer circumference of the outer rotor.

Abstract: A compressor arrangement for operating a compressed air supply facility of a vehicle includes a compressor having an electric motor constructed as an electronically commutated, brushless DC motor with a control circuit comprising a power electronics unit, and a pneumatic compressor. The electric motor is constructed in the form of an external rotor motor.

Abstract: A reciprocating-piston machine includes at least one first cylinder and at least one first piston assigned to the first cylinder as well as at least one second cylinder and at least one second piston assigned to the second cylinder. During operation, the first piston and the second piston are deflected in a respective cylinder displacement chamber of the respective first cylinder and the second cylinder. The reciprocating-piston machine further includes a crankshaft which, during operation, can be driven and which has an eccentric crankshaft journal and a drive shaft coupling designed for the coupling of a drive shaft of a drive motor for driving the crankshaft. Additionally, the reciprocating-piston machine includes a first connecting rod configured to deflect the first piston, a second connecting rod configured to deflect the second piston, and a bearing pin about which the first and second connecting rod are rotationally movable.

Abstract: A reciprocating-piston machine includes at least one first cylinder and at least one first piston assigned to the first cylinder as well as at least one second cylinder and at least one second piston assigned to the second cylinder. During operation, the first piston and the second piston are deflected in a respective cylinder displacement chamber of the respective first cylinder and the second cylinder. The reciprocating-piston machine further includes a crankshaft which, during operation, can be driven and which has an eccentric crankshaft journal and a drive shaft coupling designed for the coupling of a drive shaft of a drive motor for driving the crankshaft. Additionally, the reciprocating-piston machine includes a first connecting rod configured to deflect the first piston, a second connecting rod configured to deflect the second piston, and a bearing pin about which the first and second connecting rod are rotationally movable.

Abstract: A double-piston compressor of a compressed air supply device. The double-piston compressor includes a low pressure stage and a high pressure stage, each of the low pressure stage and the high pressure stage having a cylinder with a piston guided in an axially movable manner therein. A piston of the cylinder of the low pressure stage and a piston of the cylinder of the high pressure stage are drivingly connected to the drive shaft via a sliding block guide. Sliding block tracks of the sliding block guide are constructed and arranged such that, during operation of the double-piston compressor, a movement of the pistons follows a stroke curve that deviates from a regular sinusoidal stroke curve, which has an amplitude corresponding to an eccentricity of the drive element.

Abstract: The invention relates to a compressor arrangement for operating a compressed air supply facility of a vehicle, having a compressor (330) having an electric motor (332), constructed as an electronically commutated, brushless DC motor with a control circuit comprising a power electronics unit, and a pneumatic compressor (331), wherein the electric motor (332) is constructed in the form of an external rotor motor.