| 摘要 |
A fluid suspension system tends to maintain a vehicle having at least two axles and a plurality of wheels in a level plane. The suspension system comprises a source of fluid under pressure and a plurality of fluid suspension devices coupled both to the vehicle frame and to the wheels of the vehicle. Different fluid suspension devices are coupled to different wheels and each device includes a cylinder and a piston. The piston of each suspension device is reciprocable in the associated cylinder and defines, together with the cylinder wall, a pressure chamber in the cylinder. A common supply line is coupled to the source of fluid under pressure for conducting fluid toward the suspension devices, while a common return line, also coupled to the source of fluid under pressure, conducts fluid away from the suspension devices. A system of conduits is coupled to the suspension devices, the common supply line and the common return line so as to define an integrated system of fluid flow paths. In each suspension device the movement of the piston in response to different loadings of the associated wheel of the vehicle controls the flow of pressurized fluid to and from the device so as to maintain the piston within a predetermined range of positions relative to the cylinder.
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