A hydraulic system for a hydraulically adjustable vehicle shock absorber including a piston and at least one pressure chamber cooperating hydraulically with the piston, a hydraulic pump configured so as to convey the hydraulic fluid (F), and a hydraulic conduit assembly, via which the at least one…
The present disclosure relates to a method for avoiding overheating of a vehicle subsystem, which comprises a compressor with a pressure chamber. The method comprises the steps of executing an Extended Kalman Filter on a control module that calculates an error between a predicted state model of the…
A hydraulic-mechatronic system, for a vehicle that is connected to a target system, includes a housing with a fluid reservoir containing fluid, a communication port, a hydraulic pump, an electric motor for driving the hydraulic pump, at least one check valve, and a relief valve fluidly connected to…
Integrated multiple actuator electro-hydraulic systems as well as their methods of use are described. Depending on the particular application, the integrated electro-hydraulic systems may exhibit different frequency responses and/or may be integrated into a single combined unit.
To configure a hydraulic circuit (10) with a hydraulic pressure control valve (20) provided for regulating, in particular reducing, the pressure at a control pressure connection (33), having - at least one movable actuating member (30), whose end surfaces can be subjected to pressure, - at least…
An air suspension device for a vehicle with an internal combustion engine comprises a first compressed air tank (10) which is connected to the internal combustion engine of the vehicle such that the internal combustion engine can push compressed air into the first compressed air tank (10), air…
The method involves using electronic system for controlling compressed air processing system, and compressed air reservoir for storing compressed air. The electronic unit for controlling air processing system during vehicle standstill is provided. Other electronic unit is operated in power saving…
The trailer (10) has a support frame (12) with a carriage (16) arranged centrically in a driving direction. The carriage has lateral wheels (18) that are connected with a throttle valve having a hydraulic cylinder for height-adjustment of the frame relative to the chassis. The frame is coupled with…
A hydraulic suspension unit for the front axle suspension of a tractor, comprises a hydraulic jack 10 having a cylinder body 12, a piston 14 arranged within the cylinder body 12 to define two variable volume working chambers 18, 20, a piston rod 16 connected to the piston 14 and sealingly guided in…
A multi-circuit protection valve unit for air pressure-operated actuators in a vehicle comprises air inlet (4) and outlets (20,23,27,28) to a central region (12). A control (2) processes a signal of outlet pressure and compares it with a stored reference pressure. A signal is sent to a pressure…
An air-supply unit has a compressor (1) driven by a motor (2), a sound absorber (3) with one or more rubber tubes and an air-dryer (4) and supplies pneumatic springs (5) with air. The pneumatic springs each connect in series to valves (6) able to trigger individual pneumatic springs. The unit has…
A piston for inserting into a cylinder, in particular into a cylinder (6) of a hydraulic damping means, with a piston body (23) having an annular groove (24) at its outside surface (26,27), and an elastic seal ring (25) fitted into said groove (24), wherein said outside surface (26,27) of said…
The hydropneumatic suspension has hydraulic spring cylinders (1,2) coupled to a hydraulic medium supply pump via feed lines containing a pressure regulating valve (65) with a proportional regulation characteristic, having an electric setting motor (67) controlled by a pressure sensor (68) detecting…
The control system for a hydropneumatic vehicle suspension has cylinders (1, 2) mounted between the sprung and unsprung masses. The piston chambers (3, 4) are fed from a first hydraulic tank (15) and the chambers around the piston rods (7, 8) from a second tank (12). A pressure control valve (20)…