WO2015010700A1 - Fluidsystem - Google Patents
Fluidsystem Download PDFInfo
- Publication number
- WO2015010700A1 WO2015010700A1 PCT/DE2014/200347 DE2014200347W WO2015010700A1 WO 2015010700 A1 WO2015010700 A1 WO 2015010700A1 DE 2014200347 W DE2014200347 W DE 2014200347W WO 2015010700 A1 WO2015010700 A1 WO 2015010700A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- fluid system
- control
- lifting plate
- pressure chamber
- unit
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2/00—Rotary-piston machines or pumps
- F04C2/30—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
- F04C2/34—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members
- F04C2/344—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C14/00—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
- F04C14/24—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by using valves controlling pressure or flow rate, e.g. discharge valves or unloading valves
- F04C14/26—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by using valves controlling pressure or flow rate, e.g. discharge valves or unloading valves using bypass channels
- F04C14/265—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by using valves controlling pressure or flow rate, e.g. discharge valves or unloading valves using bypass channels being obtained by displacing a lateral sealing face
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2/00—Rotary-piston machines or pumps
- F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
-
- 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
- F16D31/00—Fluid couplings or clutches with pumping sets of the volumetric type, i.e. in the case of liquid passing a predetermined volume per revolution
- F16D31/06—Fluid couplings or clutches with pumping sets of the volumetric type, i.e. in the case of liquid passing a predetermined volume per revolution using pumps of types differing from those before-mentioned
-
- 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
- F16D31/00—Fluid couplings or clutches with pumping sets of the volumetric type, i.e. in the case of liquid passing a predetermined volume per revolution
- F16D31/08—Control of slip
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2210/00—Fluid
- F04C2210/20—Fluid liquid, i.e. incompressible
- F04C2210/206—Oil
Definitions
- the invention relates to a fluid system with a fluidic displacement unit, which constitutes in a drive train between a drive unit and an output a switchable torque transmission element with an internal control for a working pressure.
- a generic fluid system is known from the German patent application DE 10 2012 219 361 A1. From the German patent application DE 10 201 1 013 477 A1 a hydraulic system with a hydraulic pump for hydraulic supply of a transmission is known. The hydraulic pump is located in the torque flow of a drive train of a motor vehicle.
- the object of the invention is to improve the controllability and / or controllability in a fluid system according to the preamble of claim 1.
- a fluidic displacement unit which constitutes in a drive train between a drive unit and an output a switchable torque transmission element with an internal control for a working pressure
- the fluidic displacement unit comprises a Um Kunststoffraum, which is separated from a control pressure chamber , From the Um Kunststoffraum fluid can be removed in the form of a volume flow.
- a short circuit between displacer spaces of the displacer unit can be avoided.
- Such a short circuit could lead to malfunctions in the fluid systems described in German Offenlegungsschrift DE 10 2012 219 361 A1.
- the reversing pressure chamber according to the invention prevents a short circuit and makes it possible to remove a working volumetric flow without undesired malfunctions occurring.
- a preferred embodiment of the fluid system is characterized in that the Um Kunststoffmaschinetechnikraum is separated by a fluidic resistance of the control pressure chamber.
- the inventive separation of the reversal of the pressure control, the controllability of the fluid system according to the invention is significantly improved.
- a further preferred embodiment of the fluid system is characterized in that the Um Kunststoffraum is separated by a lifting plate of the control pressure chamber.
- the lifting plate is an additional component, however, this supposed disadvantage is deliberately accepted in order to realize a simple way a separation between the Um Kunststoffmaschineraum and the control pressure chamber.
- a further preferred embodiment of the fluid system is characterized in that the lifting plate contains at least one or the fluidic resistance by which the Um Kunststoffraum is separated from the control pressure chamber.
- the fluidic resistance can be represented, for example, by at least one fluid communication channel with a diaphragm function.
- the lift plate is movable in an axial direction relative to a control plate which is fixed in the axial direction.
- the control plate is axially fixed in the displacer unit according to the invention. As a result, movement of the control plate is deliberately prevented.
- the control plate is used only for reversing and separating the displacement chambers of the displacer unit from the Um Kunststoffraum.
- a further preferred embodiment of the fluid system is characterized in that the lifting plate is biased by a spring means in the axial direction against the control plate. This ensures in a simple manner that the lifting plate occupies a defined initial position during operation of the displacer unit.
- a further preferred embodiment of the fluid system is characterized in that the lifting plate has at least one closing body, which closes a connection in the control plate to a low-pressure region in a closed position.
- control plate between a rotary assembly of the displacer unit and the lifting plate is arranged.
- the rotary assembly includes, for example, a rotor rotatably disposed within a lift contour with displacers such as vanes.
- the pressure in the control pressure space is also referred to as control pressure.
- Control pressure is an adjustable fluid pressure. About the controllable fluid pressure can be controlled with the displacer torque transmissible. The interaction between the lifting plate and the control plate allows in a simple way an internal leakage current, which serves to represent a slip between a drive and an output.
- An outflowing volume flow is preferably proportional to a differential speed between the drive unit and the transmission. Due to the outflowing volume flow can be displayed in a simple manner, a torque-proportional pressure.
- the outflowing volume flow can advantageously be used for cooling and / or at least one other consumer supplied.
- the outflowing volume flow can be advantageously used for cooling the displacer unit itself.
- a further preferred embodiment of the fluid system is characterized in that the output comprises a transmission which is designed as an automated transmission and / or dual-clutch transmission.
- the displacer unit and the transmission are duplicated.
- the transmission is preferably designed as a continuously variable conical-pulley transmission.
- a further preferred embodiment of the fluid system is characterized in that the displacer unit as a vane machine or vane pump or as a gear machine or gear pump, in particular réelle leopardrad- pump, external gear pump or gerotor pump is executed.
- the vane machine or vane pump advantageously comprises a rotor, which is connected directly or with the interposition of a drive shaft, drivingly connected to the drive unit.
- the vane cell machine or vane pump preferably comprises a housing which is non-rotatably connected to an input shaft of the transmission.
- the invention also relates to a method of operating a fluid system as described above.
- the invention also relates to a fluidic displacement unit for a previously described fluid system. Further advantages, features and details of the invention will become apparent from the following description in which, with reference to the drawings, various embodiments are described in detail. Show it:
- FIG. 1 shows a simplified representation of a drive train of a motor vehicle with a fluid system according to the invention, which comprises a displacer unit and
- Figure 2 shows an embodiment of a displacer unit according to the invention as a vane machine in longitudinal section.
- the drive unit 4 is, for example, an internal combustion engine, which is drivingly connected to a drive axle 6 of the motor vehicle via a transmission 5.
- the drive axle 6 includes, for example, a differential gear, via which a drive torque is transmitted to two driven wheels 8, 9.
- a fluid system 10 with a fluidic displacement unit 14 is drivingly connected between the drive unit 4 and the transmission 5.
- the fluidic displacement unit 14 conveys fluid from a tank 15 via a fluid inlet 16 to a fluid outlet 18.
- the fluid is preferably a hydraulic medium, such as hydraulic oil. Therefore, the fluid system 10 may also be referred to as a hydraulic system.
- the drive connection between the drive unit 5 and the displacer unit 14 can be done for example via a shaft.
- the output connection between the displacer unit 14 and the transmission 5 can take place, for example, via a housing of the displacer unit 14.
- an internal leakage is indicated, which represents an internal control for an inflowing or outflowing volume flow of the hydraulic displacer unit 14.
- an open coupling between the drive unit 4 and the transmission 5 are shown. If the leakage 24 is minimized, then the clutch is closed.
- An arrow 25 indicates that the volumetric flow taken in from the tank 15 with the aid of the displacer unit 14 can be supplied, at least partially, to a consumer.
- a further arrow 26 indicates that the volume flow at the fluid outlet 18 can be used completely or partially as a cooling oil flow.
- a control valve is indicated, via which the provided at the fluid outlet 18 volume flow between the load 25 and the cooling oil flow 26 can be divided.
- FIG. 2 shows a displacer unit 40 in longitudinal section.
- arrows 21 and 22 it is indicated that the displacer unit 40, as well as the displacer unit 14 in Figure 1, in the drive train of a motor vehicle between a drive unit, such as an internal combustion engine, and an output, such as a transmission, in particular a conical-pulley, switched or can be arranged.
- the displacer unit 40 is designed as a vane cell machine or vane pump with a housing 44.
- the housing 44 comprises five housing bodies 45, 46, 47, 48, 49 fixedly connected to one another.
- a rotary assembly 50 is arranged in the housing 45.
- the rotary assembly 50 includes a rotor 54 having radially extending slots in which vanes are disposed.
- the rotor 54 with the wings is rotatably arranged in a known manner within a cam ring 55.
- the structure and function of the rotary assembly 50 is known per se and described for example in German Patent DE 195 31 701 C1.
- the rotor 54 of the rotary assembly 50 is driven via a drive element 58, for example a drive shaft, by the drive unit, in particular the internal combustion engine, as indicated by the arrow 21.
- the rotary assembly 50 is disposed between two control plates 61, 62.
- the cam ring 55 is, as indicated by the arrow 22, rotatably connected to a transmission input shaft of a transmission.
- control plate 61 is equipped as in the known displacement unit with Um Kunststoffquer4.000en.
- the right in Figure 2 arranged control plate 62nd in contrast to the known displacer unit, creates a separation between the rotary assembly 50 and a reversing pressure chamber 65.
- the reversing pressure chamber 65 in turn is separated from a control pressure chamber 66 by a lifting plate 68.
- the control pressure chamber 66 communicates with the Um Kunststoffraum 65 via at least one fluidic resistor 69, in particular a hydraulic resistance 69.
- the hydraulic resistance 69 is designed, for example, as a diaphragm and indicated in FIG. 2 only by two dashed lines which extend in the axial direction through the lifting plate 68.
- the lifting plate 68 is biased by a spring device 70 in the axial direction against the control plate 62.
- Closing bodies 71 are attached to the lifting plate, two of which are visible in the section shown in FIG.
- the closing body 71 serve to represent a kind of seat valve, which is realized by the lifting plate 68.
- Low-pressure connection 72 which connects the Um Kunststoffmaschinemaschine 65 with a low pressure region of the displacer unit 40.
- the low pressure connection 72 includes low pressure communication channels, two of which are visible in FIG.
- the two visible in Figure 2 low pressure communication channels are closed by the two visible in Figure 2 closing body 71.
- the closing bodies 71 release a connection between the reversing pressure chamber 65 and the low-pressure region of the displacer unit 40.
- the closing bodies 71 are designed, for example, as sealing pins which are screwed or pressed into the lifting plate 68.
- the control plate 62 is fixed in the axial direction with the aid of a fixing element 74.
- Axial means in the direction or parallel to the axis of rotation of the drive element 58.
- Analog means radially transversely to the axis of rotation of the drive element 58th
- the Um Strukturdruckraum 65 is connected via a high-pressure connection 67 with a high-pressure region of the displacer unit 40 in connection.
- the high-pressure connection 67 comprises high-pressure connection channels, two of which are visible in the section shown in FIG.
- the low-pressure connection 72 and the high-pressure connection 67 serve to display the reversing function of the control plate 62.
- the fixing element 74 can be fixed by means of an adjusting element 75 in different axial positions.
- the adjustment element 75 is preferably part of a test arrangement for testing the displacement unit 40 according to the invention. When used in a drive train of a motor vehicle, the use of the adjustment element 75 and the use of the housing body 47 to 49 is not absolutely necessary or may even be a hindrance.
- the control pressure chamber 66 can be acted upon via a control pressure port 77 with a control pressure.
- the Um Kunststoffraum 65 is arranged in the axial direction between the control plate 62 and the lifting plate 68. Radially outside the Um Kunststoffraum 65 is limited by a wall portion 78 of the housing body 46. Via a corresponding connection, for example in the form of at least one connecting channel, fluid conveyed by the displacer unit 40, in particular hydraulic medium, can be removed via the wall region 78 in a simple manner and fed to a consumer, such as a cooler.
- the volume flow take-off of the displacer unit 40 can take place particularly advantageously without directly influencing the control pressure in the control pressure chamber 66.
- the local or spatial separation of the removal point of the control pressure chamber 66 is advantageously achieved by the arrangement and design of the lifting plate 68 and has been positively influenced in the present invention carried out investigations on the controllability of a fluid system with the displacer unit 40 according to the invention.
- fluid in particular hydraulic medium, such as hydraulic oil
- fluid is displaced through the control plate 62 into the Um Kunststoffraum 65 by the interaction between the rotor 54 and the cam ring 55. From there, it can be returned to the low-pressure area with low loss via the seat-valve-adjustable resistor with the closing bodies 71.
- the adjustment of the resistance takes place via the axial movement Supply of the lifting plate 68 with the closing bodies 71st
- the attached to the lifting plate 68 closing body 71 together with the control plate 62 is a kind of seat valve.
- the pressure in the flow direction upstream of the lifting plate 68 that is to say in the reversing pressure chamber 65, is higher and displaces the lifting plate 68 in the opening direction, ie to the right in FIG.
- the displacer unit 40 according to the invention can basically be used where a coupling is required, which acts to damp vibration, is wear-resistant, sensitively adjustable via a hydraulic resistance, due to the integrable cooling function operated for a long time in the slip and / or by a diverted flow rate a pump can save.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Rotary Pumps (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE112014003453.3T DE112014003453A5 (de) | 2013-07-26 | 2014-07-24 | Fluidsystem |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102013214682 | 2013-07-26 | ||
DE102013214682.5 | 2013-07-26 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2015010700A1 true WO2015010700A1 (de) | 2015-01-29 |
Family
ID=51421772
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2014/200347 WO2015010700A1 (de) | 2013-07-26 | 2014-07-24 | Fluidsystem |
Country Status (2)
Country | Link |
---|---|
DE (2) | DE112014003453A5 (de) |
WO (1) | WO2015010700A1 (de) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19531701C1 (de) | 1995-08-14 | 1997-01-16 | Luk Fahrzeug Hydraulik | Pumpe |
EP0758716A2 (de) * | 1995-08-14 | 1997-02-19 | LuK Fahrzeug-Hydraulik GmbH & Co. KG | Flügelzellenpumpe |
DE19846815A1 (de) * | 1997-10-16 | 1999-04-22 | Luk Fahrzeug Hydraulik | Ventilanordnung und Pumpe für ein Getriebe |
DE102011013477A1 (de) | 2010-04-01 | 2011-09-29 | Schaeffler Technologies Gmbh & Co. Kg | Hydrauliksystem |
DE102012219361A1 (de) | 2011-11-15 | 2013-05-16 | Schaeffler Technologies AG & Co. KG | Fluidsystem |
-
2014
- 2014-07-24 DE DE112014003453.3T patent/DE112014003453A5/de not_active Withdrawn
- 2014-07-24 WO PCT/DE2014/200347 patent/WO2015010700A1/de active Application Filing
- 2014-07-24 DE DE102014214497.3A patent/DE102014214497A1/de not_active Withdrawn
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19531701C1 (de) | 1995-08-14 | 1997-01-16 | Luk Fahrzeug Hydraulik | Pumpe |
EP0758716A2 (de) * | 1995-08-14 | 1997-02-19 | LuK Fahrzeug-Hydraulik GmbH & Co. KG | Flügelzellenpumpe |
DE19846815A1 (de) * | 1997-10-16 | 1999-04-22 | Luk Fahrzeug Hydraulik | Ventilanordnung und Pumpe für ein Getriebe |
DE102011013477A1 (de) | 2010-04-01 | 2011-09-29 | Schaeffler Technologies Gmbh & Co. Kg | Hydrauliksystem |
DE102012219361A1 (de) | 2011-11-15 | 2013-05-16 | Schaeffler Technologies AG & Co. KG | Fluidsystem |
Also Published As
Publication number | Publication date |
---|---|
DE112014003453A5 (de) | 2016-05-04 |
DE102014214497A1 (de) | 2015-01-29 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP1446590B2 (de) | Antriebsstrang für ein kraftfahrzeug | |
DE102004033439C5 (de) | Antriebsstrang für ein Kraftfahrzeug | |
DE102007038156A1 (de) | Kupplungsanordnung | |
WO2006128637A1 (de) | Reibungskupplung mit hydraulischem aktuator und antriebseinheit mit mindestens einer solchen | |
WO2008106920A1 (de) | Hydrauliksystem zur steuerung eines mit nasskupplungen arbeitenden doppelkupplungsgetriebes | |
DE102008004591A1 (de) | Hydraulisches Steuerventil mit integriertem Rückschlagventil | |
DE112007002163T5 (de) | Kopplungsanordnung | |
EP2486280B1 (de) | Flügelzellenpumpe | |
DE102012201573A1 (de) | Nockenwellenversteller | |
WO2013110526A1 (de) | Hydraulikanordnung | |
DE102012211526A1 (de) | Hydraulischer Nockenwellenversteller mit interner Dämpfung | |
DE102012219361A1 (de) | Fluidsystem | |
WO2008148512A1 (de) | Drehmomentübertragungseinrichtung | |
DE102017130920B4 (de) | Aktuatoranordnung für einen Kraftfahrzeugantriebsstrang und Verfahren zu dessen Betreiben | |
DE102012202904A1 (de) | Pumpenanordnung zum Erzeugen eines variablen Volumenstromes | |
DE3841238C2 (de) | ||
EP3215743A1 (de) | Verdrängerpumpe | |
DE102014115548A1 (de) | Innenzahnradpumpe und Pumpverfahren | |
WO2015010700A1 (de) | Fluidsystem | |
WO2016019955A1 (de) | Nockenwellenversteller mit kammernkurzschliessender druckgesteuerter stelleinheit | |
DE102016204773A1 (de) | Anordnung für Leistungsübertragungseinheit (PTU), mit hydraulisch betätigter Trennung der hinteren Ausgangswelle | |
DE3906500C2 (de) | Flügelzellenpumpen-Getriebekupplung | |
DE4111962B4 (de) | Drehmomentübertragungseinrichtung | |
WO2014023744A1 (de) | Pumpeneinrichtung | |
DE102012016683A1 (de) | Schmiermittelpumpenvorrichtung |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 14755969 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 112014003453 Country of ref document: DE |
|
REG | Reference to national code |
Ref country code: DE Ref legal event code: R225 Ref document number: 112014003453 Country of ref document: DE |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 14755969 Country of ref document: EP Kind code of ref document: A1 |