An integrated and self-contained suspension assembly having a gas spring integrated with a shock absorber (damper) is described. The rigid gas cylinder of the air spring is divided into a first gas chamber and a second gas chamber. A flow port connects the first and second gas chambers, and can be manually opened or closed by valve and a simple one-quarter turn rotation of an external knob to instantly switch the gas spring between two different spring rates. The different spring rates are functions of the separate or combined volumes of the two. gas chambers. The integrated suspension assembly is compactly packaged and self-contained, i.e., does not require any externalities, such as gas sources or electricity, to operate.

The invention relates to an integrated air-supply unit, in particular for air-suspension systems for motor vehicles, said unit comprising an air compressor having an electric motor and an air dryer. The air compressor together with the electric motor, air dryer and a number of pneumatic connections form a functional unit

A wheelie control suspension system for snowmobiles is provided. The wheelie control suspension system may include at least one spring preload apparatus and at least one dampening apparatus. The wheelie control suspension system may operate to change the spring force or damping force of the front track shock and rear track shock at the switch of a knob or activation of an electronic button.

Aspects relate to control systems (100), air spring systems (300), vehicle suspension systems, vehicles (700), methods (600) and computer software for a multi-chamber air spring (200, 250) for a vehicle (700). The multi-chamber air spring (200, 250) comprises at least a first chamber (204, 254) and a second chamber (206, 256) and a valve (210, 260, 262) therebetween. The control system (100) comprises one or more controllers (110). An example control system (100) is configured to: receive a signal indicative of one or more vehicle parameters, the one or more vehicle parameters indicative of one or more vehicle driving conditions; determine a valve switching mode in dependence on the one or more vehicle parameters, wherein the valve switching mode is indicative of a current profile (400, 440) to operate the valve (210, 260, 262); and output a valve control signal to operate the valve (210, 260, 262) in accordance with the determined valve switching mode.

The disclosure provides an air supply unit, the air supply unit provided in the disclosure includes a bearing seat, a drying mechanism, an air storage mechanism, an air supply mechanism and a control valve assembly; the air supply mechanism is connected with one end of the bearing seat, an air channel is formed in the other end of the bearing seat, and the control valve assembly is provided on one end of the bearing seat where the air channel is formed, and communicates with the air channel; and the drying mechanism is provided in the bearing seat, the air storage mechanism is sleeved on one end of the bearing seat that is provided with the air supply mechanism, and the air supply mechanism is located in the air storage mechanism.

An air management system for a vehicle having a body and plurality of wheels, including: a reservoir tank for storing compressed air and filling at least one air spring of the vehicle, and a compressed air supply unit for supplying the compressed air, which includes a compressed air port to the reservoir tank and the at least one air spring, a vent port to a venting environment, and a piloted exhaust valve connected to the compressed air port and configured to vent the at least one air spring through the vent port, the piloted exhaust valve having a piloted control port. The reservoir tank is pneumatically connected to the piloted control port of the piloted exhaust valve, and is configured to provide a control pressure to the piloted control port to open the piloted exhaust valve during venting of the at least one air spring.

A tire inflation control system for a vehicle includes: a manifold defining: a channel configured to be connected to a fluid source, and a discharge port configured to be connected to one or more tires of a vehicle; an actuator configured to selectively control fluid communication between the channel and the discharge port; a pressure sensor configured to measure a fluid pressure in the discharge port; and an electronics module in communication with the pressure sensor and configured to command the actuator to selectively control fluid communication between the channel and the discharge port and based on the fluid pressure in the discharge port, and to thereby control inflation of the one or more tires connected to the discharge port.

A dual function fluid adjuster assembly. The dual function fluid adjuster assembly has a first adjuster assembly for adjusting a first rebound fluid circuit and a second adjuster assembly for adjusting a second rebound fluid circuit. At least a portion of the first adjuster assembly is at least partially housed within a shaft assembly, and at least a portion of the second adjuster assembly is at least partially housed within the shaft assembly.

The invention relates to a method for controlling a flow from a source of pressurized air to an air bag of a pneumatic suspension arrangement in a vehicle. The method comprises obtaining a set of vehicle condition signals comprising at least two vehicle condition signals, each vehicle condition signal being indicative of an individual current condition associated with said vehicle. The method further comprises, on the basis of said set of vehicle condition signals, determining whether or not there is a need to supply the air bag with air from the source of pressurized air. The method further comprises, in response to determining that there is not a need to supply the air bag with air from the source of pressurized air, preventing pressurized air to be fed from said source of pressurized air to said air bag.

A control unit for an anti-roll bar link system for a vehicle suspension is provided, and includes a manifold to selectively fluidly couple first and second anti-roll bar links to a reservoir. The manifold can include a cam positionable between at least first and second settings, with the second setting causing greater telescopic resistance within the anti-roll bar link assemblies than the first setting. The control unit can include various check assemblies configured to seal passageways of the manifold based on the position of the cam. When the cam is in the first setting, pressure entering the manifold from the first or second anti-roll bar link assembly causes the check members to permit fluid flow from the anti-roll bar link assemblies to the reservoir. When the cam is in the second setting, the first and second anti-roll bar link assemblies and the reservoir are in fluid communication with each other.