| 摘要 |
<p>The annular space 36, 38 between the inner 34 and outer 32 tubes of a bi-tubular shock absorber is sub-divided by an annular sealing diaphragm 70. The outer tube 32 is provided with an oil supply union 82 communicating with the annular space 36 below the diaphragm, and with an oil bleed union 84 communicating with the annular space 38 above the diaphragm 70. The supply union 82 is adapted to be connected to the outlet of the height control valve of the self-levelling suspension system, whilst the bleed union 84 is adapted to be connected to the oil reservoir of the system. Oil which is drawn up along the shock absorber rod 52 returns to the space 38 above the diaphragm, via space 64 and passages 66, and is returned to the oil reservoir, thus permitting the use of bi-tubular shock absorbers in self-levelling suspension systems. <IMAGE></p> |
