A device for supplying hydraulic energy in a chassis system of a vehicle includes a first hydraulic pump and a first electric motor for driving the first hydraulic pump, a second hydraulic pump and a second electric motor for driving the second hydraulic pump, and a common electronic unit which is arranged to control the first and the second electric motor, wherein the two electric motors and the two pumps are preferably designed to be identical in structure and/or respectively form first and second motor-pump groups.

A device for supplying hydraulic energy in a chassis system of a vehicle includes a first hydraulic pump and a first electric motor for driving the first hydraulic pump, a second hydraulic pump and a second electric motor for driving the second hydraulic pump, and a common electronic unit which is arranged to control the first and the second electric motor, wherein the two electric motors and the two pumps are preferably designed to be identical in structure and/or respectively form first and second motor-pump groups.

A damper system for changing a ground clearance of a vehicle, including a main damper having a main damper chamber and a main damper piston movably arranged in a main damper tube and a spring assembly. The spring assembly includes a spring, a lower spring seat, and an upper spring seat. The spring is arranged between the lower spring seat and the upper spring seat, wherein one of the lower spring seat and the upper spring seat includes a cylinder and a piston, and the other one of the lower spring seat and the upper spring seat is coupled to the main damper and movable with the spring. The piston of the spring assembly is steplessly adjustable between a first position and a second position, wherein the first position corresponds to a predefined minimum ground clearance and the second position corresponds to a predefined maximum ground clearance.

A hydraulic shock absorber includes a piston, a damper tube, a suspension spring, a plunger, a jack chamber, a pump case, a pump piston, a screw shaft, and a drive unit. Both end surfaces of the pump piston in a reciprocating direction are a first end surface demarcating the pump chamber, and a second end surface demarcating the gas chamber, the second end surface having a screw hole into which the screw shaft is screwed. The pump piston includes a space portion between a bottom plate defining the first end surface and the screw hole. The screw shaft has a through-hole connecting the gas chamber with the space portion.

A rinsing system includes: a pump control module configured to, when a hydraulic line is connected to a port that is fluidly connected to a hydraulic line of a suspension system, selectively operate a hydraulic fluid pump of the suspension system and pump hydraulic fluid from a hydraulic fluid tank of the suspension system through the hydraulic fluid pump toward the hydraulic line; and a valve control module configured to, when the hydraulic line is connected to the port and the hydraulic fluid pump is pumping hydraulic fluid, open valves of the suspension system and fluidly connect the hydraulic fluid pump with the hydraulic line.

A rinsing system includes: a pump control module configured to, when a hydraulic line is connected to a port that is fluidly connected to a hydraulic line of a suspension system, selectively operate a hydraulic fluid pump of the suspension system and pump hydraulic fluid from a hydraulic fluid tank of the suspension system through the hydraulic fluid pump toward the hydraulic line; and a valve control module configured to, when the hydraulic line is connected to the port and the hydraulic fluid pump is pumping hydraulic fluid, open valves of the suspension system and fluidly connect the hydraulic fluid pump with the hydraulic line.

A vehicle height adjustment apparatus includes a control device. The control device controls the opening degree of the solenoid valve to allow a movement amount of the support member to reach a movement amount target value that corresponds to the vehicle height set in advance, in accordance with the weight applied to the vehicle. The control device controls the opening degree of the solenoid valve to change the movement amount of the support member based on a difference between a value based on the information related to the vehicle height and a vehicle height-related target value, on condition that the movement amount of the support member reaches the movement amount target value and the value based on the information related to the vehicle height obtained by the information obtaining device does not reach the vehicle height-related target value that corresponds to the vehicle height set in advance.

A suspension system for a vehicle includes a knuckle defining a bore therethrough. The suspension system includes a wheel hub rotatably mounted on the knuckle. Further, the suspension system includes an axle at least partially received within the bore of the knuckle and operatively coupled to the wheel hub. The suspension system includes a pump driven by the axle and configured to generate pressurized fluid. The suspension system includes an actuator receiving pressurized fluid from the pump.

A suspension system for a vehicle includes a knuckle defining a bore therethrough. The suspension system includes a wheel hub rotatably mounted on the knuckle. Further, the suspension system includes an axle at least partially received within the bore of the knuckle and operatively coupled to the wheel hub. The suspension system includes a pump driven by the axle and configured to generate pressurized fluid. The suspension system includes an actuator receiving pressurized fluid from the pump.

A suspension device includes a spring, a jack, a reservoir chamber which reserves the oil, a first pump, a second pump an opening and closing unit. The second pump is configured to cause the oil to flow into the housing chamber and to cause the oil to flow out from the housing chamber.