REGENERATIVE HYDRAULIC SHOCK-ABSORBER FOR VEHICLE SUSPENSION

摘要

The shock-absorber (10) comprises: a cylinder (12) containing a hydraulic working fluid; a piston (14) slidably arranged in the cylinder (12) so as to split the cylinder (12) into two variable-volume working chambers (22, 24), namely a first working chamber (22), or extension chamber, and a second working chamber (24), or compression chamber; an auxiliary conduit (30) in fluid communication on one side with the first working chamber (22) and on the other with the second working chamber (24); a train of permanent magnets (32) slidably arranged in the auxiliary conduit (30) so as to reciprocally move along the auxiliary conduit (30), dragged by the working fluid flowing between the first and second working chambers (22, 24) through the auxiliary conduit (30) as a result of the reciprocating motion of the piston (14) in the cylinder (12); and electric energy generating means (36, 36a, 36b; 72, 74, 76, 78) for generating electric energy by exploiting the movement of the train of permanent magnets (32) along the auxiliary conduit (30).