Shock absorber for motor vehicle, has compression chamber communicating with hydraulic chamber forming hydraulic buffer via pipe, where chamber includes pressure spring exerting permanent pressure on variable volume of hydraulic chamber

摘要

The absorber has a rod (4) guided in a cylindrical body (2) of a hydraulic actuator, where rod has a lower end connected to a piston separating upper expansion and lower compression chambers. The piston has passages (10) connecting the chambers, where the compression chamber communicates with a compensation chamber containing pressurized gas. The compression chamber communicates with a hydraulic chamber forming a hydraulic buffer (52) via a connection pipe (60) with free end, and includes an elastic pressure spring exerting a permanent pressure on a variable volume of the hydraulic chamber.