A hydraulic anti-sway bar disconnect system for locking and unlocking movement of an anti-sway bar of a vehicle, the system including an actuable control valve for controlling the movement of a working fluid within the system, at least one cylinder and piston assembly connected to the anti-sway bar having a working fluid connection port at both ends of the cylinder, a working fluid reservoir in fluid connection with the working fluid connection ports on the at least one cylinder via the actuable control valve whereby the actuable control valve is operable to maintain the system in a locked condition whereby working fluid in the cylinder maintains the piston substantially in position and an unlocked condition in which the actuable control valve allows the working fluid in the cylinder to exit the cylinder giving the piston free travel in the cylinder.

A vehicle height adjustment apparatus includes a spring, an adjustor, a storage chamber, a pump, and a flow path switching unit. The adjustor includes an accommodation chamber which accommodates liquid, and adjusts the length of the spring according to the amount of liquid in the accommodation chamber. The pump includes a cylinder. The flow path switching unit includes a first communication path through which the inside of the cylinder communicates with the storage chamber, a second communication path through which the inside of the cylinder communicates with the accommodation chamber, and a third communication path through which the accommodation chamber communicates with the storage chamber. The flow path switching unit switches the flow path of the liquid according to an amount of electric current supplied to the flow path switching unit.

A damper control device feeds back a pressure within an extension-side chamber to control an extension-side solenoid valve that adjusts the pressure within the extension-side chamber, and feeds back a pressure within a compression-side chamber to control a compression-side solenoid valve that adjusts the pressure within the compression-side chamber. The damper control device performs a compression-side reduction correction which reduces a compression-side current supplied to the compression-side solenoid valve during extension of a damper, and performs an extension-side reduction correction which reduces an extension-side current supplied to the extension-side solenoid valve during contraction of the damper.

An active damper system is provided for a vehicle, in particular a motor vehicle. It includes a damper unit with a cylinder, a piston which is guided in the cylinder, and a piston rod which is connected to the piston. The piston divides the cylinder into a first chamber and a second chamber, and the damper unit is designed to be arranged between a body and a wheel of the vehicle. The damper system also has a pump for changing the pressure in the two chambers and for moving the piston, a first valve, a second valve, which is connected to the first valve in series, a third valve, and a fourth valve, which is connected to the third valve in series. The first and second valve are connected in parallel to the third and fourth valve. A fluid-conductive first line leads to the first chamber between the first valve and the second valve, and a fluid-conductive second line leads to the second chamber between the third valve and the fourth valve. A low-pressure side of the pump is connected between the first valve and the fourth valve, and a pressure side of the pump is connected between the second valve and the third valve. The first valve, the second valve, the third valve, and the fourth valve can be switched in order to selectively block and release the flow of fluid. A control unit is provided for switching the four valves such that the pump rotates in the same direction when compressing and rebounding during an electromotor operation and a generator operation.

A hydraulic suspension system for a motor vehicle having at least a pair of road engaging wheels. The suspension system includes, a hydraulic cylinder coupled with the each of the pair of road engaging wheels, the hydraulic cylinder defining a cap end volume and a rod end volume separated by a piston. A hydraulic supply circuit for the hydraulic cylinder includes, a high pressure hydraulic source, a low pressure hydraulic drain, a pair of hydraulic sub circuits each coupled to one of the hydraulic cylinder cap and rod end volumes. Each hydraulic sub circuit includes, a proportional supply flow valve coupled with the high pressure hydraulic source and one of the cylinder volumes, a return flow control proportional valve coupled with the low pressure hydraulic drain and the one cylinder volume, and an accumulator coupled to the associated hydraulic cylinder volume through an accumulator fill control proportional valve.

A spring assembly for mounting between a chassis and an unsprung mass of a vehicle, the spring assembly comprising a coil spring and a hydropneumatic spring acting in series, wherein the hydropneumatic spring is configured to be switchable between a compressible state and an incompressible state, such that when the hydropneumatic spring is in the compressible state, the equivalent spring rate of the spring assembly is a function of the spring rate of the coil spring and the hydropneumatic spring, and when the hydropneumatic spring is in the incompressible state, the equivalent spring rate of the spring assembly is a function of the spring rate of the coil spring.

The suspension includes a hydraulic actuator and a supply hydraulic circuit connected to the hydraulic actuator to supply a compression chamber and an extension chamber of the hydraulic actuator with a working fluid. The supply hydraulic circuit includes a hydraulic pump, a high-pressure line connected to a delivery port of the hydraulic pump, a low-pressure line connected to a suction port of the hydraulic pump, and a flow control valve connected on one side to the compression chamber and extension chamber of the hydraulic actuator and on the other side to the high-pressure line and low-pressure line. The flow control valve is a rotary spool valve having a spool which is rotatable continuously between a plurality of operating positions.

A suspension system is provided. A suspension system includes a damper including a first chamber, a second chamber, and a piston disposed between the first chamber and the second chamber, a pump configured to supply fluid to the first chamber or the second chamber, and a change valve disposed between the pump and the damper to change a discharge direction of the fluid of the pump.

A fluid system for a vehicle, preferably for a vehicle chassis, includes: a pump for delivering a fluid, wherein the pump has a first fluid connection and a second fluid connection, an actuator which can be connected to the first fluid connection in a fluid-communicating manner via an actuator valve, wherein the pump is designed to deliver the fluid to be delivered in a first delivery direction and in a second delivery direction opposite the first delivery direction, so that the actuator is fluidically pressurized by the pump via the first fluid connection when the pump delivers in the first delivery direction, and the actuator is fluidically separated from the first fluid connection depending on the position of the actuator valve or the actuator is fluidically relieved by the pump via the first fluid connection when the pump delivers in the second delivery direction.

The present disclosure provides an electronic control shock absorber having coaxial dual solenoid valves. The electronic control shock absorber includes a cylinder formed with a double structure having an internal space and an external space, the internal space being divided into a compression chamber and a rebound chamber, and a reservoir chamber being formed in the external space, a compression solenoid valve mounted on an outside of the cylinder, and a rebound solenoid valve mounted on the outside of the cylinder. The compression solenoid valve and the rebound solenoid valve are arranged on the same axis to face each other.