| 摘要 |
<p>A hydraulic shock absorber unit (510) provides automatic maintenance of a predetermined spacing between a sprung load and an unsprung running gear where the mass of the sprung load is subject to change. The shock absorber unit (510) includes a cylinder (530) divided by a piston (522) into a variable volume compression chamber (524) and a variable volume rebound chamber (526). The piston (522) is reciprocable within the cylinder (530) and operates as a pump (519). A pressurizable lift chamber (552) includes a compressible medium (558) and receives damping liquid pumped from the compression chamber (524). A bleed valve (570) drains fluid from the lift chamber (552) when the extension of shock absorber (510) exceeds the predetermined spacing.</p> |
