A level control system adjusts the level of a rail vehicle, and includes at least one level control cylinder and a level control piston. The level control piston is at least partly received in the level control cylinder in a movable manner. The level control system has at least one first hydraulic connection, wherein the level control cylinder or the level control piston has a collared shoulder, in which at least one first fluid channel connected to the first hydraulic connection is arranged. At least one first attachment for receiving the first hydraulic connection is provided along the collared shoulder, the first attachment, being arranged on the collared shoulder tangentially to the longitudinal axis of the level control cylinder or of the level control piston such that at least one tangential external fluid connection on the collared shoulder can be connected to the at least one first hydraulic connection.

A height-adjustable spring arrangement for a vehicle includes a bearing spring, a first limiting cylinder with a first limiting cylinder pot and a first limiting piston, a second limiting cylinder with a second limiting cylinder pot and a second limiting piston, and a guide cylinder with a guide cylinder pot, a displaceable guide piston in the guide cylinder pot and a guide piston rod fixed on the guide piston and extending out of the guide cylinder pot along a longitudinal axis of a bearing spring and through the bearing spring. The guide piston rod is displaceable by the first and second limiting cylinders such that a spring preload acting on the bearing spring and a negative spring path of the bearing spring remain constant as a result of a height adjustment.

Disclosed embodiments are related to suspension systems including dampers and suspension actuators and related methods of control for mitigating the effects of potholes and other road surface discontinuities.

Integrated multiple actuator electro-hydraulic systems as well as their methods of use are described. Depending on the particular application, the integrated electro-hydraulic systems may exhibit different frequency responses and/or may be integrated into a single combined unit.

A fluid-sealed engine mount includes a variable orifice whose cross-section is changed according to a magnitude of engine vibration, thereby keeping a damping performance substantially unchanged at a time of large displacement vibration of an engine as compared to a time of small displacement vibration of the engine.

A fluid-sealed engine mount includes a variable orifice whose cross-section is changed according to a magnitude of engine vibration, thereby keeping a damping performance substantially unchanged at a time of large displacement vibration of an engine as compared to a time of small displacement vibration of the engine.

The integrated tank and compressor mounting system for a motorcycle has a mount block which has a mounting face, and a compressor clamp. The mount block has a threaded cylindrical section which forms a tank mount for mounting a tank. The tank has a cylindrical tubular section closed at one end and threaded at the other end such that the tank threads correspond to the mount block threads. The tank provides air for an air suspension which includes a forward suspension unit activated by air and an aft suspension unit activated by air. A supply line connects the tank air volume to an inlet valve on the suspension control unit. The suspension control unit has a cylindrical forward control valve passage and the forward control valve passage has a forward transfer chamber.

The integrated tank and compressor mounting system for a motorcycle has a mount block which has a mounting face, and a compressor clamp. The mount block has a threaded cylindrical section which forms a tank mount for mounting a tank. The tank has a cylindrical tubular section closed at one end and threaded at the other end such that the tank threads correspond to the mount block threads. The tank provides air for an air suspension which includes a forward suspension unit activated by air and an aft suspension unit activated by air. A supply line connects the tank air volume to an inlet valve on the suspension control unit. The suspension control unit has a cylindrical forward control valve passage and the forward control valve passage has a forward transfer chamber.

Integrated multiple actuator electro-hydraulic systems as well as their methods of use are described. Depending on the particular application, the integrated electro-hydraulic systems may exhibit different frequency responses and/or may be integrated into a single combined unit.

The fluid supply device comprises a screw, which has a male thread formed thereon and rotates, and a nut, which has a female thread formed therein that meshes with the male threading and which, by the screw rotating in a first direction, i.e., the circumferential direction, moves towards a first end in the rotation axis direction, and which, by moving with said movement a piston that forms a reservoir chamber, discharges a fluid stored in the reservoir chamber, wherein, if the fluid is discharged and if the screw is not rotating, first surfaces which form the threading of the male screw and second surfaces which form the threading of the female screw are in contact with each other, and second surfaces which form the threading of the male screw and first surfaces which form the threading of the female screw are not in contact with each other.