Valve block arrangement and method for a valve block arrangement
AssigneeRobert Bosch GmbH
InventorsWilfried Werner, Botond Szeles, Sebastian Oschmann
Life of this patent
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Abstract
A valve block arrangement configured as a closed center system includes at least one main spool for controlling a hydraulic consumer. The main spool is configured to open and close at least one pressure medium connection between a hydraulic pump and the consumer in controlled, continuous fashion and, in at least one embodiment, is electrically activated. A bypass flow path with a cut valve branches off between the adjustable, hydraulic pump and the main spool. The cut valve is configured to open and close a pressure medium connection between the hydraulic pump and a tank in controlled, continuous fashion. The cut valve is electrically activatable.
Claims14
A valve block arrangement, comprising:
- a closed center valve block having at least one main spool configured to control a hydraulic consumer, the at least one main spool assigned a pressure port and a working port;
- at least one hydraulic machine connected to the pressure port;
- a bypass flow path branching off fluidically between the pressure port and the at least one hydraulic machine;
- an electrically activated cut valve configured to connect the bypass flow path to a tank, the cut valve configured to throttle the bypass flow path;
- and
- control electronics comprising:
- a preset module configured to determine an item of load sensitivity information based on a preset value received for consumer input by an input unit, the item of load sensitivity information being inversely related to the preset value;
- and
- an actuation module configured to generate an actuation signal for the cut valve based on the item of load sensitivity information.
A method for a valve block arrangement that includes a closed center valve block with at least one main spool configured to control a hydraulic consumer, the at least one main spool assigned a pressure port and a working port;
- at least one hydraulic machine connected to the pressure port;
- a bypass flow path branching off fluidically between the pressure port and the at least one hydraulic machine;
- and an electrically activated cut valve configured to connect the bypass flow path to a tank and to throttle the bypass flow path, the method comprising:
- receiving a preset value for the consumer input by an input unit in an adaptation module;
- converting one of the preset value and an adapted preset value adapted from the preset value into an item of load sensitivity information for the consumer with a preset module, the item of load sensitivity information being inversely related to the one of the preset value and the adapted preset value;
- and
- generating an actuation signal for the cut valve based on the item of load sensitivity information in an actuation module.
Dependencies are inferred from the claim text.