EP4676784A1 - Hydrodynamische retarder mit füllrohr - Google Patents
Hydrodynamische retarder mit füllrohrInfo
- Publication number
- EP4676784A1 EP4676784A1 EP24710373.2A EP24710373A EP4676784A1 EP 4676784 A1 EP4676784 A1 EP 4676784A1 EP 24710373 A EP24710373 A EP 24710373A EP 4676784 A1 EP4676784 A1 EP 4676784A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- working medium
- channel
- chamber
- retarder
- tank
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T1/00—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles
- B60T1/02—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels
- B60T1/08—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels using fluid or powdered medium
- B60T1/087—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels using fluid or powdered medium in hydrodynamic, i.e. non-positive displacement, retarders
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D57/00—Liquid-resistance brakes; Brakes using the internal friction of fluids or fluid-like media, e.g. powders
- F16D57/02—Liquid-resistance brakes; Brakes using the internal friction of fluids or fluid-like media, e.g. powders with blades or like members braked by the fluid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T10/00—Control or regulation for continuous braking making use of fluid or powdered medium, e.g. for use when descending a long slope
- B60T10/02—Control or regulation for continuous braking making use of fluid or powdered medium, e.g. for use when descending a long slope with hydrodynamic brake
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D57/00—Liquid-resistance brakes; Brakes using the internal friction of fluids or fluid-like media, e.g. powders
- F16D57/04—Liquid-resistance brakes; Brakes using the internal friction of fluids or fluid-like media, e.g. powders with blades causing a directed flow, e.g. Föttinger type
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T1/00—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles
- B60T1/02—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels
- B60T1/08—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels using fluid or powdered medium
Definitions
- the invention relates to the structure of a hydrodynamic retarder for a motor vehicle, in particular the structure of the filling channel of the retarder.
- Hydrodynamic retarders have a working chamber that can be filled with a working medium and then emptied from it. With the help of the working medium, a torque is transferred from a bladed rotor to a bladed stator.
- the working chamber When the working chamber is filled, the rotor and thus a shaft that is particularly designed to be non-rotatable with the rotor, for example a universal joint shaft or transmission output shaft indirectly connected to the wheels of a vehicle, are decelerated.
- a retarder and its working medium circuit are known from DE 10 2013 006 611A1.
- the rotor and stator of the retarder form a toroidal working chamber that is connected to a working medium circuit with a working medium tank via a duct system.
- the working chamber is ventilated via a ventilation system, through which air can escape into the environment through a connection between the working chamber and the environment.
- the working medium tank can be connected to a compressed air connection or the environment via a valve, the MRCU.
- the working medium tank In order to switch the retarder to braking mode, the working medium tank must be pressurized with compressed air via the MRCU so that the working medium is conveyed from the working medium tank into the working chamber via the filling channel.
- the filling channel is arranged in the working medium tank in such a way that its inlet opening ends in the lower area of the working medium tank, so that the inlet opening of the filling channel is always arranged below the working medium level so that no air can get into the filling channel.
- the working medium tank When switching the retarder to non-braking mode, the working medium tank must be vented and the working chamber must be ventilated. The working medium is pumped from the retarder via the heat exchanger back into the working medium tank.
- the object of the invention is to propose a retarder with reduced manufacturing and assembly costs.
- a retarder comprising a retarder chamber in which a rotatably mounted rotor and a stator are arranged, which together form a working chamber that can be filled with and emptied from working medium.
- the retarder also comprises a working medium tank, which has an area for receiving working medium that is not currently in the working chamber and an expansion area, at least one filling channel for supplying working medium into the working chamber and a return channel for discharging working medium from the working chamber, as well as a rotor housing, a stator housing and a tank housing.
- the filling channel is a pipe with an inlet opening and an outlet opening, wherein the inlet opening ends in the working medium tank and the outlet opening ends in an inlet chamber, wherein the inlet chamber is formed by the stator housing and the stator.
- the filling channel essentially leads through the working medium tank, which considerably simplifies production.
- the working medium tank can comprise a sump area, with the inlet opening ending in the sump area.
- the sump area in the sense of the invention is an area that has a small
- a coupling plane can be provided on the tank housing, through which a first channel and a second channel lead, wherein the coupling plane is arranged below the sump area and a fluid-conducting connection to the primary side of a heat exchanger can be established via the channels.
- the heat exchanger can be connected directly or indirectly via a transition part.
- the outlet opening of the second channel is arranged in such a way that it ends in the sump area. This means that the working medium pumped through the heat exchanger and cooled first reaches the working medium tank. It is also provided that the working medium tank forms a section of a fluid-conducting connection between the second channel and the filling channel.
- the gap formed between the outlet of the second channel and the inlet opening of the filling channel essentially has 3 functions:
- the inlet opening of the filling channel and the outlet opening of the second channel are aligned with each other. Furthermore, the distance (x) between the inlet opening and the outlet opening is crucial for the function. A distance (x) between 1 mm and 15 mm is advantageous here.
- the inlet opening can be designed to be funnel-shaped in order to further improve the flow pattern through the working medium tank during braking operation.
- Figure 1 shows a sketch showing the basic structure of the retarder 1.
- the outer shell of the retarder 1 essentially consists of two parts, the rotor housing 2 and the stator housing 3, each of which forms a half shell of the housing.
- the housing parts 2 and 3 enclose a cavity, whereby the cavity is divided into three areas.
- a cavity area 27, a storage area 26, 25 and a retarder area 29 are provided.
- the cavity region 27, the storage region 26 and the sump region 25 together form the working medium tank 15, wherein the working medium 9 collects in the storage region 26 and sump region 25 when the retarder is switched to non-braking mode.
- the cavity area 27 is a space that is essentially designed to ensure that no working medium can enter the compressed air control system, also known as MRCII, via the connection 17.
- a working medium separator or oil separator 28 is provided between the connection 17 and the working medium tank 15. Separating oil can return to the working medium tank 15 via the drain 30.
- the compressed air control regulates the braking torque of the retarder 1.
- the area between the rotor housing 2 and the stator housing 3 is referred to as the retarder area 29.
- the rotor 6, the stator 7, the mounted rotor shaft 8 and channels for guiding the working medium are arranged in the retarder area 28.
- the rotor 6 can be arranged axially displaceably on the rotor shaft 8, as is known from the prior art.
- a coupling plane 18 is provided on the tank housing 4 to which a heat exchanger 11 can be attached directly or indirectly, with a first channel 19 and a second channel 20 being provided in the coupling plane 18.
- the working chamber 14, between the rotor 6 and stator 7, is connected to the flow connection of the heat exchanger 11 via the first channel 19, and the outlet of the heat exchanger 11 is connected to the working medium tank 15 via the second channel 20.
- the cooled working medium 9 enters the working medium tank 15 via the second channel 20 when switching to non-braking mode, i.e. when the pressure in the expansion region 27 drops.
- a filling channel 12 is provided, which establishes a connection from the lower sump area 25 into the inlet chamber 23, which in turn is connected to the working chamber 14 via channels in the stator 7, not shown.
- the known pumping effect of the retarder 1 causes the working medium 9 to flow out of the working chamber via the return channel 13, the first channel 19, the heat exchanger 11 and the second channel 20 into the working medium tank.
- the filling channel 12 is arranged opposite the second channel 20 in such a way that working medium 9 flowing out of the second channel 20 can flow into the filling channel 12 via the inlet opening 21.
- This creates a circulating flow, with the working medium 9 flowing through the working medium tank 15 over a short section.
- the distance between the outlet from the second channel 20 and the inlet opening 21 can be selected between 1 mm and 15 mm, with the mixing of working medium 9 from the tank and working medium 9 from the circuit depending on the distance.
- the minimum working medium level in the working medium tank 15 must be above the inlet opening 21 to ensure that no air gets into the filling channel 12.
- the pressure of the control air in the expansion area 27 regulates the volume of the working medium in the circuit, which in turn determines the braking torque of the retarder. This control of the braking torque is standard and is therefore not described in more detail.
- Figure 2 shows the arrangement of the filling pipe in the working medium tank 15.
- This illustration shows a possible design of the working medium tank 15 with the sump area 25.
- the sump area 25 is a small area that is located in the lower tank area, so that it is ensured that a certain volume of working medium always remains in the sump area 25, i.e. in particular when the retarder is braking. Since the end with the inlet opening 21 of the filling pipe 12 ends in the sump area, it is ensured that no air can get into the working chamber 14 or the working medium circuit via the filling pipe 12.
- the heat exchanger 11 is only shown in outline here, with an intermediate component 32 being provided which connects the heat exchanger to the tank housing 4 via the connection level 18.
- the second channel 20 is integrated in the intermediate component 33 in this design. Furthermore, channels are integrated into the intermediate component 33, via which the heat exchanger 11 is integrated into the working medium circuit.
- the inlet opening 21 of the filling channel 12 and the outlet opening 22 of the second channel 20 are, as already mentioned, aligned with one another and arranged at a distance x from one another.
- the inlet opening 21 is also designed in a funnel shape so that the most laminar flow of the working medium through the working medium tank 15 occurs during braking operation.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Transportation (AREA)
- Braking Arrangements (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102023105951.3A DE102023105951A1 (de) | 2023-03-10 | 2023-03-10 | Hydrodynamische Retarder mit Füllrohr |
| PCT/EP2024/055941 WO2024188779A1 (de) | 2023-03-10 | 2024-03-07 | Hydrodynamische retarder mit füllrohr |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4676784A1 true EP4676784A1 (de) | 2026-01-14 |
Family
ID=90363018
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP24710373.2A Pending EP4676784A1 (de) | 2023-03-10 | 2024-03-07 | Hydrodynamische retarder mit füllrohr |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20260009433A1 (de) |
| EP (1) | EP4676784A1 (de) |
| CN (1) | CN120769818A (de) |
| DE (1) | DE102023105951A1 (de) |
| WO (1) | WO2024188779A1 (de) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4442219A1 (de) * | 1994-11-26 | 1995-06-01 | Voith Turbo Kg | Bremsanlage mit einem hydrodynamischen Retarder, insbesondere für Kraftfahrzeuge |
| DE10150681B4 (de) * | 2001-10-17 | 2005-09-01 | Voith Turbo Gmbh & Co. Kg | Hydrodynamisches Bremssystem mit einem Retarder |
| DE102013006611A1 (de) | 2013-04-17 | 2014-10-23 | Voith Patent Gmbh | Hydrodynamischer Retarder |
| DE102015201910A1 (de) * | 2015-02-04 | 2016-08-04 | Voith Patent Gmbh | Arbeitsmediumkreislauf für eine hydrodynamische Maschine |
-
2023
- 2023-03-10 DE DE102023105951.3A patent/DE102023105951A1/de active Pending
-
2024
- 2024-03-07 CN CN202480017723.4A patent/CN120769818A/zh active Pending
- 2024-03-07 WO PCT/EP2024/055941 patent/WO2024188779A1/de not_active Ceased
- 2024-03-07 EP EP24710373.2A patent/EP4676784A1/de active Pending
-
2025
- 2025-09-10 US US19/324,353 patent/US20260009433A1/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| CN120769818A (zh) | 2025-10-10 |
| US20260009433A1 (en) | 2026-01-08 |
| DE102023105951A1 (de) | 2024-09-12 |
| WO2024188779A1 (de) | 2024-09-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP1159178B1 (de) | Verfahren zur steuerung einer hydrodynamischen baueinheit und steuervorrichtung | |
| DE3943708C2 (de) | Hydrodynamischer Retarder | |
| DE102020107729B3 (de) | Retarder mit gekühltem Dichtungssystem | |
| DE2656669B1 (de) | Lastschaltgetriebe mit einer hydrodynamischen Einheit und einem hydrodynamischen Retarder | |
| EP1469235A1 (de) | Hydraulisches Steuer- und Regelsystem sowie Verfahren zum Einstellen von hydraulischen Druckniveaus | |
| DE69733284T2 (de) | Kondensatoraufbaustruktur | |
| EP0958463B1 (de) | Hydrodynamischer retarder mit axial verschiebbarem stator | |
| DE102013006611A1 (de) | Hydrodynamischer Retarder | |
| EP2379384A1 (de) | Fahrzeugkühlkreislauf mit einem retarder oder einer hydrodynamischen kupplung | |
| DE102013217287A1 (de) | Innerer Wärmeübertrager für einen Kältemittelkreislauf, insbesondere für eine Klimaanlage eines Kraftfahrzeuges, und einen Kältemittelkreislauf mit einem Verdampfer | |
| EP2005005A1 (de) | Selbstentlüftende zentrifugalpumpe | |
| DE102009012495B3 (de) | Antriebsstrang mit einer auf der Getriebeabtriebsseite angeordneten hydrodynamischen Maschine | |
| WO2024188779A1 (de) | Hydrodynamische retarder mit füllrohr | |
| DE102023105956B4 (de) | Hydrodynamischer Retarder mit Arbeitsmediumtank | |
| DE202019005826U1 (de) | Nassbremssystem und Fahrzeug, das dieses Bremssystem umfasst | |
| DE102020107733B4 (de) | Retarder mit gekühltem Dichtungssystem | |
| WO2003033319A2 (de) | Hydrodynamisches bremssystem mit einem retarder | |
| EP3850245B1 (de) | Automatgetriebe mit retarder | |
| AT391003B (de) | Fluessigkeitskreislauf fuer eine hydrodynamische kupplung | |
| DE102019204532A1 (de) | Hydraulisches Steuergerät für ein Automatikgetriebe eines Kraftfahrzeugs | |
| DE19854787B4 (de) | Vorrichtung zum Befüllen eines hydrodynamischen Retarders | |
| EP1315916B1 (de) | Verfahren und vorrichtung zur steuerung einer hydrodynamischen kupplung | |
| DE102004015706B4 (de) | Hydrodynamische Baueinheit und Verfahren zur Beschleunigung des Befüllvorganges einer hydrodynamischen Baueinheit | |
| EP4676786A1 (de) | Hydrodynamischer retarder | |
| WO2020053039A1 (de) | Hydrodynamischer retarder |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: UNKNOWN |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE |
|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE |
|
| 17P | Request for examination filed |
Effective date: 20251010 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC ME MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
| RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: DRIVENTIC GMBH |
|
| DAV | Request for validation of the european patent (deleted) | ||
| DAX | Request for extension of the european patent (deleted) |