Valve-controlled positive-displacement machine
OwnerAlejandro Lopez Pamplona, Bjoern Beuterinventors
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Abstract
In a valve-controlled hydrostatic positive-displacement machine and a method for its control, the positive-displacement machine having a plurality of cylinder-piston units which are activated or deactivated via electrically or electro-hydraulically actuated low-pressure valves and via high-pressure valves for setting a delivery or absorption volume flow of the positive-displacement machine, if the volume flow is essentially unchanged, the activation and deactivation of the cylinder-piston units is effected in accordance with one of a plurality of activation patterns valid for the particular volume flow.
Claims16
A method for controlling a valve-controlled hydrostatic positive-displacement machine having plurality of cylinder-piston units (6, 8), comprising the following steps:
- activating or deactivating the cylinder-piston units (6, 8) via electrically or electrohydraulically actuated low-pressure valves (12) and via high-pressure valves (14) adapted to set a delivery or absorption volume flow of the positive-displacement machine, wherein in a substantially unchanged equalized volume flow of the positive-displacement machine;
- and
- effecting the activation and deactivation of the cylinder-piston units (6, 8) according to a selected one of a plurality of activation patterns that are valid for a particular equalized volume flow.
A valve-controlled hydrostatic positive-displacement machine, comprising:
- a plurality of cylinder-piston units (6, 8) that are configured to be activatable or deactivatable via electrically or electrohydraulically actuated low-pressure valves (12) and via high-pressure valves (14) for setting a delivery or absorption volume flow of the positive-displacement machine;
- a plurality of activation patterns, wherein according to said activation patterns, the cylinder-piston units (6, 8) are activatable or deactivatable in an essentially unchanged volume flow of the positive-displacement machine.
Dependencies are inferred from the claim text.