Hydrodynamic retarder

Patent metadata

Field	Value
Publication number	US-9771053-B2
Application number	US-201314375684-A
Country	US
Kind code	B2
Filing date	Jan 11, 2013
Priority date	Feb 3, 2012
Publication date	Sep 26, 2017
Grant date	Sep 26, 2017

Abstract

There is provided a hydrodynamic retarder including a bladed rotor and a bladed stator jointly forming a working chamber to be filled with working medium and discharged therefrom, a working medium container receiving working medium, and a control pressure application system pressurizing the working medium with a control pressure medium to displace the working medium from the working medium container into the working chamber to set a desired braking torque. A centrifugal separator separating the working medium from the control pressure medium, the centrifugal separator is connected in a flow-conductive manner to an outlet of the working medium container for the control pressure medium to be pressurized with the control pressure medium, the centrifugal separator is driven by the pressure of the control pressure medium, and the working medium container is assembled from at least two shells, where the first and/or the second shell encloses the centrifugal separator.

First claim

The invention claimed is:

1. A hydrodynamic retarder comprising:
a bladed rotor and a bladed stator jointly forming a working chamber configured to be filled with working medium and to be discharged therefrom;
a working medium container for receiving working medium that is currently not situated in the working chamber;
a control pressure application system for pressurizing the working medium contained in the working medium container with a control pressure medium to displace the working medium from the working medium container into the working chamber in order to set a desired braking torque;
wherein a centrifugal separator is provided for separating the working medium from the control pressure medium, wherein the centrifugal separator is connected in a flow-conductive manner to an outlet of the working medium container for the control pressure medium so as to be pressurized with the control pressure medium, wherein the centrifugal separator is driven by the pressure of the control pressure medium and wherein the working medium container is assembled from at least two shells, wherein the first and/or the second shell encloses the centrifugal separator.

2. A hydrodynamic retarder comprising:
a bladed rotor and a bladed stator jointly forming a working chamber configured to be filled with working medium and to be discharged therefrom;
a working medium container for receiving working medium that is currently not situated in the working chamber;
a control pressure application system for pressurizing the working medium contained in the working medium container with a control pressure medium to displace the working medium from the working medium container into the working chamber in order to set a desired braking torque;
wherein a centrifugal separator is provided for separating the working medium from the control pressure medium, wherein the centrifugal separator is connected in a flow-conductive manner to an outlet of the working medium container for the control pressure medium so as to be pressurized with the control pressure medium, wherein the centrifugal separator is driven by the pressure of the control pressure medium, and wherein the centrifugal separator comprises at least one inlet cylinder delimited by a wall extending in an annular fashion at least in sections and whose cylinder axis stands substantially perpendicularly to an inner surface of the first shell facing the second shell.

3. The hydrodynamic retarder according to claim 1 , wherein the centrifugal separator comprises at least one inlet cylinder delimited by a wall extending in an annular fashion at least in sections and whose cylinder axis stands substantially perpendicularly to an inner surface of the first shell facing the second shell.

4. The hydrodynamic retarder according to claim 2 , wherein the wall of the inlet cylinder is integral with the first and/or second shell.

5. The hydrodynamic retarder according to claim 3 , wherein the wall of the inlet cylinder is integral with the first and/or second shell.

6. The hydrodynamic retarder according to claim 2 , wherein the centrifugal separator comprises two inlet cylinders which are switched in succession in the direction of flow of the control pressure medium and respectively comprise a control pressure medium inlet for supplying control pressure medium to the inlet cylinder and a control pressure medium outlet for discharging control pressure medium therefrom, wherein the control pressure medium outlet of the first inlet cylinder is connected in a flow-conductive manner to the control pressure medium inlet of the second inlet cylinder and the control pressure medium outlet of the second inlet cylinder to the outlet of the working medium container.

7. The hydrodynamic retarder according to claim 3 , wherein the centrifugal separator comprises two inlet cylinders which are switched in succession in the direction of flow of the control pressure medium and respectively comprise a control pressure medium inlet for supplying control pressure medium to the inlet cylinder and a control pressure medium outlet for discharging control pressure medium therefrom, wherein the control pressure medium outlet of the first inlet cylinder is connected in a flow-conductive manner to the control pressure medium inlet of the second inlet cylinder and the control pressure medium outlet of the second inlet cylinder to the outlet of the working medium container.

8. The hydrodynamic retarder according to claim 4 , wherein the centrifugal separator comprises two inlet cylinders which are switched in succession in the direction of flow of the control pressure medium and respectively comprise a control pressure medium inlet for supplying control pressure medium to the inlet cylinder and a control pressure medium outlet for discharging control pressure medium therefrom, wherein the control pressure medium outlet of the first inlet cylinder is connected in a flow-conductive manner to the control pressure medium inlet of the second inlet cylinder and the control pressure medium outlet of the second inlet cylinder to the outlet of the working medium container.

9. The hydrodynamic retarder according to claim 5 , wherein the centrifugal separator comprises two inlet cylinders which are switched in succession in the direction of flow of the control pressure medium and respectively comprise a control pressure medium inlet for supplying control pressure medium to the inlet cylinder and a control pressure medium outlet for discharging control pressure medium therefrom, wherein the control pressure medium outlet of the first inlet cylinder is connected in a flow-conductive manner to the control pressure medium inlet of the second inlet cylinder and the control pressure medium outlet of the second inlet cylinder to the outlet of the working medium container.

10. The hydrodynamic retarder according to claim 6 , wherein the flow-conductive connection is respectively formed by the first and/or second shell.

11. The hydrodynamic retarder according to claim 7 , wherein the flow-conductive connection is respectively formed by the first and/or second shell.

12. The hydrodynamic retarder according to claim 8 , wherein the flow-conductive connection is respectively formed by the first and/or second shell.

13. The hydrodynamic retarder according to claim 9 , wherein the flow-conductive connection is respectively formed by the first and/or second shell.

14. The hydrodynamic retarder according to claim 2 , wherein the wall comprises at least one opening in order to discharge working medium from the inlet cylinder to the working medium container.

15. The hydrodynamic retarder according to claim 3 , wherein the wall comprises at least one opening in order to discharge working medium from the inlet cylinder to the working medium container.

16. The hydrodynamic retarder according to claim 4 , wherein the wall comprises at least one opening in order to discharge working medium from the inlet cylinder to the working medium container.

17. A hydrodynamic retarder comprising:
a bladed rotor and a bladed stator jointly forming a working chamber configured to be filled with working medium and to be discharged therefrom;
a working medium container for receiving working medium that is currently not situated in the working chamber;
a control pressure application system for pressurizing the working medium contained in the working medium container with a control pressure medium to displace the working medium from the working medium container into the working chamber in order to set a desired braking torque;
wherein a centrifugal

Assignees

• Voith Patent Gmbh

Inventors

• Laukemann Dieter
• Martin Alexander

Classifications

• B60T10/02

  with hydrodynamic brake · CPC title

• F16D57/04 Primary

  with blades causing a directed flow, e.g. Föttinger type · CPC title

• B60T1/087 Primary

  in hydrodynamic, i.e. non-positive displacement, retarders · CPC title