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US 12,687,178 B2Granted
Hydraulic assembly and commercial vehicle
AssigneeDeere & Company
InventorsManuel Billich, Michael Meid
Life of this patent
Estimating the term…
Abstract
A hydraulic assembly for a commercial vehicle includes a supply connector which is hydraulically connected or connectable to a pump outlet of a hydraulic variable pump and a feedback connector. The hydraulic assembly includes an adjustment control, which depends on an outlet pressure of the variable pump and on a reported pressure of the feedback connector, for adjusting the variable pump. A hydraulic valve device is disposed in the flow path between the feedback connector and the adjustment control. The valve device includes a valve unit which is effective as a hydraulic connection or interruption in the flow path, depending on a shift position. Moreover, the disclosure relates to a commercial vehicle having such a hydraulic assembly.
Claims15
A hydraulic assembly for a commercial vehicle, comprising:
- a supply connector, which is hydraulically connected or connectable to a pump outlet of a hydraulic variable pump, as an interface for supplying hydraulic consumers of the commercial vehicle;
- a feedback connector as an interface for pressure feedback from consumers;
- an adjustment control, which depends on an outlet pressure of the variable pump and on a reported pressure of the feedback connector, for adjusting the variable pump;
- a hydraulic valve device in the flow path between the feedback connector and the adjustment control, the valve device including a valve unit having a first shift position which is effective as a hydraulic connection in the flow path and a second shift position which is effective as a hydraulic interruption in the flow path;
- and
- a second hydraulic valve device in the flow path between the pump outlet and the supply connector, wherein the second valve device includes at least one of a second valve unit having a first shift position which is effective as a hydraulic connection in the flow path and a second shift position which is effective as a hydraulic interruption in the flow path, and wherein in the second shift position of the second valve unit disposed in the flow path between the pump outlet of the variable pump and the supply connector the pump outlet is hydraulically connectable or hydraulically connected to a tank connector.
3 more elements
A commercial vehicle comprising:
- a drive motor;
- a hydraulic assembly including:
- a supply connector, which is hydraulically connected or connectable to a pump outlet of a hydraulic variable pump, as an interface for supplying hydraulic consumers of the commercial vehicle;
- a feedback connector as an interface for pressure feedback from consumers;
- an adjustment control, which depends on an outlet pressure of the variable pump and on a reported pressure of the feedback connector, for adjusting the variable pump;
- a hydraulic valve device in the flow path between the feedback connector and the adjustment control, the valve device including a valve unit having a first shift position which is effective as a hydraulic connection in the flow path and a second shift position which is effective as a hydraulic interruption in the flow path;
- and
- a second hydraulic valve device in the flow path between the pump outlet and the supply connector, wherein the second valve device includes a second valve unit having a first shift position which is effective as a hydraulic connection in the flow path and a second shift position which is effective as a hydraulic interruption in the flow path, and wherein the second valve unit disposed in the flow path between the pump outlet of the variable pump and the supply connector has two valve connectors on the connection side that faces away from the pump outlet.
5 more elements
A hydraulic assembly for a commercial vehicle, comprising:
- a supply connector, which is hydraulically connected or connectable to a pump outlet of a hydraulic variable pump, as an interface for supplying hydraulic consumers of the commercial vehicle;
- a feedback connector as an interface for pressure feedback from consumers;
- an adjustment control, which depends on an outlet pressure of the variable pump and on a reported pressure of the feedback connector, for adjusting the variable pump;
- a hydraulic valve device in the flow path between the feedback connector and the adjustment control, the valve device including a valve unit having a first shift position which is effective as a hydraulic connection in the flow path and a second shift position which is effective as a hydraulic interruption in the flow path;
- and
- a second hydraulic valve device in the flow path between the pump outlet and the supply connector, wherein the second valve device includes a third valve unit hydraulically connected to the flow path as a branch to a tank connector and having a first shift position which is effective as a hydraulic interruption to the tank connector and a second shift position which is effective as a hydraulic connection to the tank connector.
3 more elements
Dependencies are inferred from the claim text.