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

Applicant: WAY ASSAUTO SRL

Inventor： COTTO, Fabio

IPC: 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

Abstract: 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).

公开(公告)号：WO2021197736A1

公开(公告)日：2021-10-07

申请号：PCT/EP2021/055041

申请日：2021-03-01

Applicant: HYDAC MOBILHYDRAULIK GMBH

Inventor： ANTON, Marc

IPC: B60G11/26 ,  B60G17/056 ,  B60G99/00 ,  B62D33/06 ,  F16F9/096 ,  F16F9/46 ,  B60G17/015 ,  F15B11/16 ,  B60G11/265 ,  B60G17/0152 ,  B60G2400/252 ,  B60G2400/5122 ,  B60G2500/02 ,  B60G2500/30 ,  B60G2800/85 ,  B60G99/002 ,  B62D33/0608 ,  F15B2211/6052 ,  F15B2211/625 ,  F15B2211/6313 ,  F15B2211/6336 ,  F15B2211/7053 ,  F15B2211/71 ,  F15B2211/7128 ,  F15B2211/7142 ,  F15B2211/781

Abstract: Ein Hydropneumatisches Federungssystem für Fahrzeuge, zumindest bestehend aus einer Achsfederung (10) und einer Kabinenfederung (12), die zu ihrer Versorgung mit Druckfluid an eine Druckversorgungsquelle anschließbar sind, ist dadurch gekennzeichnet, dass mittels einer Ansteuereinrichtung (14) gemeinsam sowohl die Achsfederung (10) als auch die Kabinenfederung (12) ansteuerbar sind und dass mittels einer Prioritätserkennung (16) unter Einbezug einer Sensoreinrichtung (18) für die jeweilige Federung (10, 12), bedarfsabhängig vorrangig die eine Federung (10, 12) vor der jeweils anderen Federung (12, 10) mit Druckfluid versorgt ist.