An air suspension system according to the principles of the present disclosure includes a suspension actuator, a reservoir, a compressor, and a first cooling circuit. The suspension actuator has a chamber. The reservoir includes a shell and an adsorptive material. The shell at least partially defines an interior region. The interior region is fluidly connected to the chamber. The adsorptive material is in the interior region. The compressor is fluidly connected to the interior region. The first cooling circuit includes a first heat exchanger, a second heat exchanger, and a conduit. The first heat exchanger is in thermal contact with the interior region. The second heat exchanger is in thermal contact with an electric vehicle component. The conduit is adapted to circulate a fluid between the first heat exchanger and the second heat exchanger. The present disclosure also provides a method of operating the air suspension system.

A vehicle height control system and method of increasing a vehicle height of a vehicle having a vehicle body and at least one axle assembly. The vehicle height control system includes a pressurized fluid, and a plurality of air springs provided to support at least one section of the body of the vehicle above at least one axle of the vehicle and configured to adjust the height the vehicle relative to the ground in response to the supply and discharge of the fluid. A control assembly of the vehicle height control system configured to receive user input indicative of a vehicle height adjustment operation desired by a user has a piston unit fluidically interconnected with the pressurized fluid supply system via a first control valve and is operable to adjust the vehicle height by adjusting a second control valve interposed between the pressurized fluid supply system and the air springs.

An air suspension system according to the principles of the present disclosure includes a suspension actuator, a reservoir, a compressor, and a first cooling circuit. The suspension actuator has a chamber. The reservoir includes a shell and an adsorptive material. The shell at least partially defines an interior region. The interior region is fluidly connected to the chamber. The adsorptive material is in the interior region. The compressor is fluidly connected to the interior region. The first cooling circuit includes a first heat exchanger, a second heat exchanger, and a conduit. The first heat exchanger is in thermal contact with the interior region. The second heat exchanger is in thermal contact with an electric vehicle component. The conduit is adapted to circulate a fluid between the first heat exchanger and the second heat exchanger. The present disclosure also provides a method of operating the air suspension system.

A vehicle height control system and method of increasing a vehicle height of a vehicle having a vehicle body and at least one axle assembly. The vehicle height control system includes a pressurized fluid supply system configured to supply a pressurized fluid, and a plurality of air springs provided to elastically support at least one section of the vehicle body of the vehicle above at least one axle assembly of the vehicle and configured to adjust the vehicle height of such sections of the vehicle body relative to a ground surface in response to the supply and discharge of the pressurized fluid. A control assembly of the vehicle height control system has a piston unit fluidically interconnected with the pressurized fluid supply system via a first control valve and is operable to adjust the vehicle height by adjusting a second control valve interposed between the pressurized fluid supply system and the air springs. A controller is configured to receive user input indicative of a Vehicle height adjustment operation desired by a user and to adjust the vehicle height by controlling the control assembly based on the user input.

A hydraulic actuator for a vehicle suspension includes: a pump assembly including an electric motor coupled to first and second pumps to transfer hydraulic fluid to a discharge header; a first isolation valve having an elastomeric seat and configured to selectively block fluid flow from a port in fluid communication with a height-adjustable damper to the discharge header; and a second isolation valve having a metal seat and connected in series with the first isolation valve to selectively block fluid flow from the port to the discharge header. The first pump transfers hydraulic fluid from a supply fluid passage to a first discharge header, and the second pump transfers hydraulic fluid from the supply fluid passage to a second discharge header. A recirculation valve selectively controls fluid flow from the second discharge header to the supply fluid passage.

An electro-dynamically controlled leveling system having a plurality of air springs mounted on at least one axle of a vehicle for supporting the weight of the vehicle; one or more electro-pneumatic valves; and one or more sensors that monitor one or more characteristics of the vehicle and transmit the one or more characteristics as a sensory input. The electro-dynamically controlled leveling system includes a central control module in electrical communication with the one or more sensors and the one or more electro-pneumatic valves. The central control module receives the sensory input from the one or more sensors, calculates a dynamic condition of the vehicle based on the sensory input, determines a desired air pressure for each air spring based on the calculated dynamic conditions of the vehicle, and transmit a command to the electro-pneumatic valves to adjust the air pressure of the air springs.

The invention proposes a method of supplying with hydraulic fluid a hydraulic motor (2) of a drive wheel supporting a vehicle by means of a cylinder-type suspension system (1). The hydraulic fluid passes through a feed duct (25) extending longitudinally through a cylinder (3) of the cylinder-type suspension system (1). The invention also relates to the use thereof in order to eliminate the need for hoses.

An electric height control device may include: an oil storage part configured to store oil therein; a motor driving part inserted into the oil storage part and driven when power is applied thereto; a hydraulic block part coupled to the motor driving part, connected to the oil storage part, and configured to amplify oil; and a control part coupled to the hydraulic block part, and configured to control the motor driving part and the hydraulic block part.

A compressed air supply unit for operating a pneumatic unit by means of a compressed air flow, in particular of an air suspension unit of a vehicle, comprises an air dryer arrangement in a main pneumatic line that pneumatically links a compressed air feed line from an air compressor and a compressed air connection to the pneumatic unit. A valve arrangement is pneumatically connected to the main pneumatic line for controlling the compressed air flow. The air dryer arrangement has a drying container having a container outer wall. A partition along a length of the drying container divides an internal space delimited by the container outer wall into first and second chambers delimited by the partition and the container outer wall. The partition adjoins the container outer wall along the length of the drying container, and the first and second chambers are adjacent to one another along that length.

A vehicle includes a body, a pair of front gas springs coupling a pair of front wheel end assemblies to the body, and a pair of rear gas springs coupling a pair of rear wheel end assemblies to the body. At least one of the rear gas springs includes a cylinder, a rod extending within the cylinder and movable relative to the cylinder, the rod and the cylinder together at least partially defining a chamber having a variable volume and receiving a first pressurized gas therein, and an accumulator in communication with the chamber and containing a second pressurized gas therein. The second pressurized gas within the accumulator is held at a threshold pressure creating a first spring rate when the first pressurized gas is below the threshold pressure and a second spring rate when the first pressurized gas is above the threshold pressure.