A damping control system for a vehicle having a suspension located between a plurality of ground engaging members and a vehicle frame includes at least one adjustable shock absorber having an adjustable damping characteristic. The system also includes a controller coupled to each adjustable shock absorber to adjust the damping characteristic of each adjustable shock absorber, and a user interface coupled to the controller and accessible to a driver of the vehicle. The user interface includes at least one user input to permit manual adjustment of the damping characteristic of the at least one adjustable shock absorber during operation of the vehicle. Vehicle sensors are also be coupled to the controller to adjust the damping characteristic of the at least one adjustable shock absorber based vehicle conditions determined by sensor output signals.

A method for operating a damper valve in order to control a damper force of a damper in an active chassis of a vehicle, wherein the damper valve includes a pilot valve for controlling a main spool. The method includes determining a target pressure necessary for a target damper force, in a first damper chamber of the damper; determining a valve flow through a damper valve inlet of the damper valve on the basis of a damper flow, generated by a damper movement, from the first damper chamber and on the basis of a measured pump flow of a pump; determining a main spool opening distance in such a way that, with an applied main spool flow through the main spool opening distance, the target pressure is present as the back pressure in the first damper chamber.

A live valve poppet is disclosed. The system includes an active valve to enable or prevent fluid flow in a first flowpath between a damping chamber and a reservoir. A second fluid pathway between the damping chamber and the external reservoir, wherein the second fluid pathway is larger than the first fluid pathway, and a poppet disposed within the second fluid pathway. The poppet distinctly separate from the active valve. The closing of the active valve causes a buildup of fluid pressure that acts against a portion of the poppet to cause the poppet to close a fluid flow through the second fluid pathway.

A magnetic valve unit comprising a magnetic valve and an electronics for driving the magnetic valve. A pneumatic spring and a pneumatic spring system.

A hydraulic system for an active chassis, including a motor-pump group with a pump casing with a mounting section with integrated fluid interface with first and second fluid openings, and a load with a casing with corresponding mounting section and corresponding fluid interface. The load can be mounted on the pump casing in such a manner that the fluid openings are disposed mutually opposite.

The present disclosure relates to a valve device and a shock absorber including same. The valve device for controlling a damping force, which is disposed, on one side of a piston having a passage through which fluid moves, inside a shock absorber, includes: a rebound retainer disposed on the one side of the piston and including a first rebound retainer chamber concavely formed in an annular shape to allow a portion of fluid passing through the passage to be stored, and a retainer hole formed in the first rebound retainer chamber; and a first disk for guiding fluid passing through the retainer hole to move through a slit formed in an outer circumferential surface thereof.

Aspects of the present invention relate to an actuator system for a vehicle suspension system comprising: a first actuator comprising a piston, a first upper fluidic chamber and a second lower fluidic chamber, the first and second fluidic chambers separated by the piston; a second actuator comprising a piston, a first upper fluidic chamber and a second lower fluidic chamber, the first and second fluidic chambers separated by the piston; a first hydraulic gallery fluidly connecting the first upper fluidic chamber of the first actuator and one of the first and second fluidic chambers of the second actuator; a second hydraulic gallery fluidly connecting the second lower fluidic chamber of the first actuator and the other of the first and second fluidic chambers of the second actuator; and at least one pump configured to pump fluid between the first and second hydraulic galleries.

A damping arrangement for an axle of an active chassis of a motor vehicle. A damping system interacts with each wheel of the axle, each damping system has the following: a damper having a double-acting hydraulic cylinder and a piston, a hydraulic pump and an electric motor for driving the hydraulic pump, a hydraulic unit having a hydraulic reservoir and valves. The hydraulic pump and the hydraulic unit of the respective damping system interact with the respective hydraulic cylinder in such a manner that, depending on the conveyance direction of the hydraulic pump, a movement of the piston can be provided in a first or in a second actuation direction. The electric motors of both damping systems are arranged with axially aligned rotational axes in a casing and can be regulated by a common control device which has electronic construction groups which are arranged on at least one circuit board.

A mounting eye (21) is fastened to a rod by pushing, partially or over an entire periphery, an outer periphery of a joint portion of a mounting eye into an annular groove of the rod. Accordingly, an axial length of a fastening portion can be set shorter than that of a related-art structure (screw fastening), thereby being capable of securing a stroke of the rod of a shock absorber in which the mounting eye is fastened to the rod.

A vibration-sensitive suspension system may include a damping-force varying shock absorber, a detecting device detecting an acceleration signal, a storing device extracting a natural frequency from an excitation test of a vehicle, and storing the extracted natural frequency, and an ECU receiving the acceleration signal from the detecting device, extracting a frequency signal, and determining whether the extracted frequency matches the natural frequency, thus regulating a damping force of the shock absorber.