Adjustable hydrostatic pump

PCT No. PCT/DE96/00081 Sec. 371 Date Jul. 8, 1997 Sec. 102(e) Date Jul. 8, 1997 PCT Filed Jan. 20, 1996 PCT Pub. No. WO94/24766 PCT Pub. Date Aug. 15, 1996An adjustable hydrostatic pump (10), in particular a piston pump, is proposed, whose cam ring (22) is adjustable via a hydromechanical adjusting...

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Bibliographische Detailangaben
Hauptverfasser:	DIETER BERTSCH, VOLKMAR LEUTNER, WALTER ROBELLER
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING HEATING LIGHTING MECHANICAL ENGINEERING POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS PUMPS FOR LIQUIDS OR ELASTIC FLUIDS WEAPONS
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Zusammenfassung:	PCT No. PCT/DE96/00081 Sec. 371 Date Jul. 8, 1997 Sec. 102(e) Date Jul. 8, 1997 PCT Filed Jan. 20, 1996 PCT Pub. No. WO94/24766 PCT Pub. Date Aug. 15, 1996An adjustable hydrostatic pump (10), in particular a piston pump, is proposed, whose cam ring (22) is adjustable via a hydromechanical adjusting assembly (35) and which has a device for active noise abatement. A pressure chamber (39) of a adjusting piston (37) acting upon the cam ring (22) is acted upon by pressure changes, via an additional control unit (47) parallel to the hydromechanical pressure controller (41), in such a way that the oscillating actions of power-train forces on the hydraulic fastening of the cam ring (22) are reduced, thus lessening the noise produced by the piston pump.