Liquid/gas suspension systems

摘要

In a liquid/gas suspension system for a vehicle wherein shock loads caused by the vehicle moving over an uneven terrain are transmitted from a road wheel to a piston reciprocable in a cylinder fixed relative to the chassis, the piston pressurizing a liquid in which a gas spring is immersed, a device is provided for replenishing liquid leaked from the system and/or for relieving excess pressure in the system. Relative movements between the wheels and chassis reciprocates a pump which provides a reference pressure in a control chamber, and alternately communicate the control chamber with the system and with a reservoir to equalize any pressure differential between the control chamber and system and admit pressurized liquid to or relieve it from the control chamber, of which the following is a specification.