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1. 发明申请

WO2021260586A1 ACTIVE SUSPENSION FOR A VEHICLE 审中-公开
公开(公告)号：WO2021260586A1
公开(公告)日：2021-12-30
申请号：PCT/IB2021/055558
申请日：2021-06-23
申请人： WAY ASSAUTO SRL
发明人： COTTO, Fabio
IPC分类号： B60G11/26 , B60G11/30 , B60G17/056 , B60G21/067 , B60G21/073 , F15B1/00 , B60G11/265 , B60G2202/154 , B60G2202/413 , B60G2202/416 , B60G2204/81 , B60G2204/82 , B60G2204/8304
摘要： The suspension (10) includes: a hydraulic actuator (12) intended to be arranged between a respective wheel (W) of the vehicle and a body (B) of the vehicle and comprising a cylinder (16), a piston (18) slidably mounted inside the cylinder (16) so as to divide an internal volume of the cylinder (16) into a pair of variable-volume chambers (20, 22), namely a compression chamber (20) and an extension chamber (22), both containing a working fluid, and a rod (24) rigidly connected to the piston (18) and projecting from the cylinder (16) on the same side as the extension chamber (22); and a supply hydraulic circuit (14) connected to the actuator (12) to supply the compression chamber (20) and the extension chamber (22) with the working fluid. The supply hydraulic circuit (14) comprises a hydraulic pump (30), a high-pressure line (32) connected to a delivery port (34) of the pump (30), a low-pressure line (36) connected to a suction port (38) of the pump (30), a spool valve (40) connected on one side to the compression chamber (20) and to the extension chamber (22) of the actuator (12) and on the other side to the high- pressure line (32) and to the low-pressure line (36) to put said chambers (20, 22) of the actuator (12) in fluid communication with said lines (32, 36) of the supply hydraulic circuit (14), and a first pressure accumulator (42) connected to the high-pressure line (32). The spool valve (40) comprises a spool (56) which is continuously movable between a plurality of operating positions, in each of which the spool valve (40) connects at least one of the compression chamber (20) and the extension chamber (22) of the actuator (12) with the high-pressure line (32).

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