| 摘要 |
825,753. Hydro-pneumatic springs; road vehicle spring suspensions. RECHERCHES ETUDES PRODUCTION R.E.P. March 29, 1956 [June 2, 1955], No. 9988/56. Classes 108(2) and 108(3) A vehicle suspension system comprises a hydro-pneumatic or hydraulic jack 20, 23, connected to a chamber 1 defined by floating pistons 2a, 2l which are each acted on by fluid of an auxiliary fluid system which is separated from the fluid of the jack 20, 23 by the pistons 2a, 21. The auxiliary fluid acting on the piston 2a is connected by a duct controlled by a slide valve 3a to a further slide valve 8a by which the duct may be connected to connections B, P, leading to a reservoir and fluid pump respectively. The fluid acting on the piston 2l is connected by a duct controlled by a slide valve 3l to a slide valve 8l linked at 28 to the slide valve 8a and controlling the connection of the duct to the reservoir connections B, P. The slide valve 8l is connected by a link 30 to a road wheel suspension arm 26 which is also connected to the ram 23. The valve 3a (Fig. 2) is movable from a position in which the duct leading from the chamber of the piston 2a is connected to the slide valve 8a, to a position in which the duct is connected by a port 4a direct to the connection P via a three-way cock r3 and a non-return valve 14. The valve 3l is similarly arranged. The valves 3a, and 3l are movable in either direction by respective electromagets which may be energized by pendulum-operated switches. The pendulums move in response to turning movement of the vehicle and may be mounted on the steering mechanism so as to remain normal to the radius of the turning circle. The switches which energize the electromagnet may also be operated by movement of the steering wheel. The ram 20, 23 may be associated with coiled, laminated, or torsion bar suspension springs (Figs. 13 to 16 not shown). Specification 792,785 is referred to. |
