WO2001027487A1 - Drehzahldifferenzabhängige hydraulische kupplung mit steuerventilen - Google Patents
Drehzahldifferenzabhängige hydraulische kupplung mit steuerventilen Download PDFInfo
- Publication number
- WO2001027487A1 WO2001027487A1 PCT/AT2000/000264 AT0000264W WO0127487A1 WO 2001027487 A1 WO2001027487 A1 WO 2001027487A1 AT 0000264 W AT0000264 W AT 0000264W WO 0127487 A1 WO0127487 A1 WO 0127487A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- control valve
- opening
- hydraulic clutch
- speed difference
- displacement machine
- Prior art date
Links
Classifications
-
- 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
- F16D25/00—Fluid-actuated clutches
- F16D25/06—Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch
- F16D25/062—Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch the clutch having friction surfaces
- F16D25/063—Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch the clutch having friction surfaces with clutch members exclusively moving axially
- F16D25/0635—Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch the clutch having friction surfaces with clutch members exclusively moving axially with flat friction surfaces, e.g. discs
- F16D25/0638—Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch the clutch having friction surfaces with clutch members exclusively moving axially with flat friction surfaces, e.g. discs with more than two discs, e.g. multiple lamellae
-
- 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
- F16D43/00—Automatic clutches
- F16D43/28—Automatic clutches actuated by fluid pressure
- F16D43/284—Automatic clutches actuated by fluid pressure controlled by angular speed
Definitions
- the invention relates to a speed-dependent hydraulic clutch, consisting of a drive housing rotating in a space-fixed housing which forms a reservoir for a working fluid, a hydrostatic displacement machine accommodated therein, a drive shaft, a friction clutch for connecting the drive shaft to the drive housing and a Piston for acting on the friction clutch, wherein when a differential speed occurs between the drive housing and the drive shaft, a pressure is generated in a pressure chamber, which acts on the friction clutch, and wherein the hydrostatic displacement machine has a first and a second opening for the and discharge of working medium and has a third and fourth opening for connection to the pressure chamber.
- Clutches of this type are used in various constellations in the drive train of motor vehicles, for the direct transmission of a torque or for locking a connected differential gear for driving the wheels of one axle or for distributing the drive torque between two axles.
- the hydrostatic displacement machine consists, for example, of an inner rotor and an outer rotor, but hydrostatic displacement machines of a different type can also be used.
- two parts for example drive housing and output shaft
- Such a coupling is known, for example, from US Pat. No. 5,536,215.
- a valve formed by a bimetallic plate is provided, which is to compensate for temperature-dependent changes in viscosity of the working fluid. No other regulatory bodies are provided.
- first and the second opening flow with the reservoir via a first and a second rotary entry and a housing-fixed first and second valve are connected that the first and the second valve are designed as controllable throttle valves, so that regardless of the direction of the differential speed, a control intervention takes place both on the supply side and on the discharge side of the displacement machine.
- control valves which allow direct action on the clutch with very little deceleration in all conceivable driving conditions. Since these are controllable throttle valves, ie they are arranged in the main flow, they can be controlled sensitively and precisely over the entire adjustment range.
- control valves fixed to the housing simple connection to the control unit, no disruptive centrifugal forces, no size restrictions, and good accessibility.
- supply and removal of the working medium is possible on one side of the displacement machine, so that the rotary entries can be provided relatively easily with a small diameter.
- the additional effort for the rotary union is compensated for by the omission of the check valves required without the two control valves in the same line.
- the first and the second valve form a common control valve (claim 2). In addition to the associated reduction in price, this also improves reliability, without any loss of functionality in the Driving.
- the first and the second valve can be proportional valves (claim 3) or controlled by a stepper motor (claim 4).
- a double-acting check valve is provided between the third and fourth openings and the pressure chamber (claim 5). Because one side of this valve is always open, the pressure chamber can be depressurized very quickly via this valve and the control valve, which is particularly advantageous when braking (ABS, ESP). In addition, the valve is particularly space-saving in the wall between the displacement machine and the pressure chamber. The fact that it is only a valve with a switching element (ideally with a ball) ensures a smooth transition from one operating mode to another.
- the common control valve is formed by an actuating piston which is displaceable in a sleeve, the sleeve being fluidly connected to the reservoir on both sides and having a first and a second lateral control opening, one of which has a the first and the other are connected to the displacement machine via the second opening (pressure side or suction side), and the actuating piston closes the first and second control opening in its two end positions and the two in the intermediate positions Control openings more or less closes in opposite directions.
- the actuating piston closes the first and second control opening in its two end positions and the two in the intermediate positions Control openings more or less closes in opposite directions.
- a further advantageous detail of the invention is that the double-acting check valve between the displacement machine and the pressure chamber consists of a tangential bore in a plane transverse to the axis of rotation of the clutch and a closing body guided therein, the two ends of the tangential bore with the third and fourth openings of the displacement machine and their center are connected to the pressure chamber (claim 9). In this way, the valve remains unaffected by centrifugal force with a minimal space requirement.
- FIG. 1 A first diagram of a coupling according to the invention
- FIG. 2 A second diagram of an embodiment variant of the coupling according to the invention
- FIG. 3 A longitudinal section through a preferred embodiment of the
- Fig. 4 A front view, partially torn open
- Fig. 5 A front view of the intermediate plate 45 (Fig. 3) m partially opened.
- Fig. 1 is only em scheme in which the hydrostatic displacement machine with 1 and its four openings designated 9, 10, 1 1 and 12 and are partially combined for simplicity. Of these, there is a connection to a pressure chamber 4 via the obligatory check valves 2, 3, which presses a multi-plate clutch (not shown here) via a piston 5.
- the connection to a reservoir 8 is established via a throttle valve 7 and possibly via a filter 6.
- the openings 9, 10 are connected to a first and a second control valve 15, 16 via a first and a second rotary entry 13, 14.
- FIG. 2 differs from this only in that a common control valve 20 is provided in place of the two control valves and a common double check valve 22 is provided in place of the two check valves.
- the common control valve 20 is controlled by a stepper motor 21.
- the housing which at the same time forms the reservoir 8 for the working fluid, is designated by 25 and a connecting flange by 26.
- a drive housing 27 which ends in a drive shaft 29, which is rotatably guided in the housing 25 by means of a bearing 28.
- an output shaft 30 projects into the drive housing 27. It is mounted in the housing 25 by means of a bearing 31.
- Two needle bearings 32, 33 are provided between the drive housing 27 and the output shaft 30 for mutual support.
- the hydrostatic displacement machine 35 Inside the drive housing 27 there is a hydrostatic displacement machine, generally designated 35, and a friction clutch 36, which is a multi-plate clutch of a type known per se.
- the hydrostatic displacement machine 35 here consists of an inner rotor 37, which is non-rotatably connected to the output shaft 30, and an outer rotor 38, which is eccentrically freely rotatable in the drive housing.
- the two rotors 37, 38 have tooth-like structures in different numbers, which mesh with one another.
- first and second openings 9, 10 on the side facing away from the friction clutch 36, and third and fourth openings 11, 12 on the side facing the friction clutch 36.
- a first connecting bore leads from the first opening 9 ( or several successive bores) 39 to a first rotary entry 13 between drive housing 27 and housing 25.
- a second connecting bore 41 leads to a second rotary entry 14, which is arranged axially offset from the first rotary entry.
- a first branch duct 43 and a second branch duct 44 lead to the common control valve 20 (not shown), which is arranged in the connecting flange 26 of the housing 25, that is to say in the non-rotating part.
- the third and fourth openings 11, 12 are in an intermediate plate 45, which is part of the drive housing 27 and to the hydrostatic
- Displacement machine 35 connects directly.
- the common check valve 22 and the throttle valve 7 are also in the intermediate plate 45.
- FIG. 4 shows, in particular, the common control valve 20, which is accommodated in a valve bore 50 in the connecting flange 26. It consists of a sleeve 51, which is inserted and screwed into the valve bore 50 and has a cylinder bore 52, in which an actuating piston 53 can be adjusted by means of the stepping motor 21.
- the connecting flange 26 has a recess 54, through which the connection to the working fluid in the reservoir is established on one side via a first access opening 56, possibly via a filter.
- the working fluid has free access to the cylinder bore 52 via a second access opening 57.
- the approximate oil level is indicated and designated 55.
- the bushing 51 has two lateral control openings between the two access openings 56, 57.
- the first control opening 58 is connected to the first branch channel 43
- the second control opening 59 is connected to the second branch channel 44 (see FIG. 3).
- the control openings 58, 59 do not necessarily have to be cylindrical, they can be adapted to refined control requirements by a different shape.
- a spring 70 is provided which automatically brings the piston 53 into the extreme position shown on the left in special situations.
- valve 22 The function of the valve 22 will now be explained on the basis of the three marked positions of the actuating piston 53.
- position 53 full line
- position 53 ' the first control opening 58 is completely open
- the second control opening 59 is completely closed.
- position 53 "(dashed lines) both control openings 58, 59 are partially open. The effect of these valve positions depends on the direction of the speed difference in the hydrostatic displacement machine and thus on the driving state:
- A) Forward train operation The adjusting piston is in the central position 53 ".
- the second control opening 59 is (more or less) open, it acts as a suction opening
- the first control opening 58 is also partially open, it is the pressure opening
- the actuating piston is in position 53 ".
- the characteristics of the clutch are soft, for example for maneuvering and when cornering on the road. If the clutch is to be stiff for higher traction, that is to say transfer a large moment, for example off-road or when the wheels are spinning, the actuating piston is brought into position 53 in which the first control opening 58 is closed.
- the first control opening must be open and the second control opening 59 (corresponding to the suction side) must be largely closed so that no towing resistance occurs when towing.
- FIG. 5 shows two further valves, the throttle valve 7 and the common double-acting check valve 22. Both are accommodated in the intermediate plate 45 (see also FIG. 3).
- pressure medium passes through the connection hole 60 into the throttle valve bore 64, in which a throttle pin 62 is screwed adjustably. This forms with the throttle valve bore 64 a throttle point 63, to the inside of which a cooling duct 48 connects, which leads into the clutch chamber 61 (FIG. 3).
- the common check valve consists of a tangential bore 65 which is pressure-tightly closed at one end by a plug 69 and a closing body 71 which is movable therein.
- the third and fourth openings 11, 12 of the hydrostatic displacement machine 35 open into the tangential bore 65. Between these openings 11, 12 there is a stop shoulder 67 on one side and a screwed stop ring 68 on the other side.
- the closing body 71 here a ball, can move back and forth between these two stops 67, 68.
- the ball 71 assumes a position in which one of the two openings 11, 12 communicates with the access opening 66. In this way, the double-acting check valve 22 is created.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
- Retarders (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT00967416T ATE288037T1 (de) | 1999-10-12 | 1999-10-12 | Drehzahldifferenzabhängige hydraulische kupplung mit steuerventilen |
DE50009376T DE50009376D1 (de) | 1999-10-12 | 2000-10-12 | Drehzahldifferenzabhängige hydraulische kupplung mit steuerventilen |
CA002385717A CA2385717C (en) | 1999-10-12 | 2000-10-12 | Speed-difference-dependent hydraulic clutch with control valves |
EP00967416A EP1224405B1 (de) | 1999-10-12 | 2000-10-12 | Drehzahldifferenzabhängige hydraulische kupplung mit steuerventilen |
US10/110,352 US6684991B1 (en) | 1999-10-12 | 2000-10-12 | Rotational speed differential hydraulic clutch having control valves |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ATGM703/99 | 1999-10-12 | ||
AT0070399U AT3832U1 (de) | 1999-10-12 | 1999-10-12 | Drehzahldifferenzabhängige hydraulische kupplung mit steuerventilen |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2001027487A1 true WO2001027487A1 (de) | 2001-04-19 |
Family
ID=3497594
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/AT2000/000264 WO2001027487A1 (de) | 1999-10-12 | 2000-10-12 | Drehzahldifferenzabhängige hydraulische kupplung mit steuerventilen |
Country Status (6)
Country | Link |
---|---|
US (2) | US6684991B1 (de) |
EP (1) | EP1224405B1 (de) |
AT (2) | ATE288037T1 (de) |
CA (1) | CA2385717C (de) |
DE (1) | DE50009376D1 (de) |
WO (1) | WO2001027487A1 (de) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2004051108A1 (de) | 2002-11-29 | 2004-06-17 | Magna Steyr Powertrain Ag & Co Kg | Drehzahldifferenzabhängige kupplung mit magnetorheologischem arbeitsfluid |
WO2004097241A2 (de) | 2003-04-28 | 2004-11-11 | Magna Steyr Powertrain Ag & Co Kg | Drehzahldifferenzabhängige hydraulische kupplung mit steuerventil |
DE102004048085A1 (de) * | 2004-09-30 | 2006-04-06 | Zf Friedrichshafen Ag | Schaltbarer Stabilisator für ein Kraftfahrzeug |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ATE288037T1 (de) * | 1999-10-12 | 2005-02-15 | Magna Drivetrain Ag & Co Kg | Drehzahldifferenzabhängige hydraulische kupplung mit steuerventilen |
AT4837U1 (de) | 2000-09-27 | 2001-12-27 | Steyr Powertrain Ag & Co Kg | Antriebssystem für ein allradgetriebenes kraftfahrzeug |
US6938221B2 (en) * | 2001-11-30 | 2005-08-30 | Microsoft Corporation | User interface for stylus-based user input |
US20040097323A1 (en) * | 2002-11-15 | 2004-05-20 | Duan Xiaohong N. | Torque biasing assembly and method |
DE102006037991A1 (de) * | 2006-08-14 | 2008-02-21 | Magna Powertrain Ag & Co Kg | Kupplungseinheit |
JP6410854B2 (ja) * | 2017-01-24 | 2018-10-24 | 本田技研工業株式会社 | 油圧クラッチ装置 |
CN110268179B (zh) * | 2017-02-10 | 2021-10-08 | 舍弗勒技术股份两合公司 | 用于离合器的操纵装置和制造方法 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4924989A (en) * | 1987-11-25 | 1990-05-15 | Valeo | Automatic clutch control system for coupling two rotating shafts |
DE19854867A1 (de) * | 1997-12-23 | 1999-06-24 | Steyr Daimler Puch Ag | Drehzahldifferenzabhängige hydraulische Kupplung |
EP0926378A2 (de) * | 1997-12-17 | 1999-06-30 | New Venture Gear, Inc. | Hydraulische Kupplung für Fahrzeugkraftübertragungssystem |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3800930A (en) * | 1972-09-22 | 1974-04-02 | Sommer Co | Variable speed drive |
US3894446A (en) * | 1974-06-03 | 1975-07-15 | Twin Disc Inc | Power transmission having friction clutch bias differential with automatic clutch release |
US4719998A (en) * | 1984-05-29 | 1988-01-19 | Mitsubishi Jidosha Kogyo Kabushiki Kaisha | Power transmission system for vehicle |
US4727966A (en) * | 1984-05-30 | 1988-03-01 | Mitsubishi Jidosha Kogyo Kabushiki Kaisha | Differential with differential motion limiting mechanism |
US4581895A (en) * | 1984-06-18 | 1986-04-15 | Deere & Company | Hydrostatic transaxle assembly |
JPH04151029A (ja) * | 1990-10-11 | 1992-05-25 | Toyoda Mach Works Ltd | 駆動力伝達装置 |
US5536215A (en) * | 1993-02-10 | 1996-07-16 | Asha Corporation | Hydraulic coupling for vehicle drivetrain |
US5611746A (en) * | 1995-06-28 | 1997-03-18 | Asha Corporation | Vehicle drivetrain coupling |
US5827145A (en) * | 1997-03-17 | 1998-10-27 | Asha Corporation | Hydraulic coupling having supplemental actuation |
US5964126A (en) * | 1998-09-02 | 1999-10-12 | Mclaren Automotive Group, Inc. | Hydraulic coupling for auxiliary drive axle of a vehicle drivetrain |
AT2964U1 (de) * | 1998-09-25 | 1999-07-26 | Steyr Daimler Puch Ag | Kraftübertragungseinheit mit drehzahlabhängiger hydraulischer kupplung |
AT3020U1 (de) * | 1998-10-29 | 1999-08-25 | Steyr Daimler Puch Ag | Drehzahldifferenzabhängige hydraulische kupplung mit drehmomentbegrenzung |
US6120408A (en) * | 1999-03-08 | 2000-09-19 | Mclaren Automotive Group, Inc. | Limited slip differential with temperature compensating valve |
ATE288037T1 (de) * | 1999-10-12 | 2005-02-15 | Magna Drivetrain Ag & Co Kg | Drehzahldifferenzabhängige hydraulische kupplung mit steuerventilen |
-
1999
- 1999-10-12 AT AT00967416T patent/ATE288037T1/de not_active IP Right Cessation
- 1999-10-12 AT AT0070399U patent/AT3832U1/de not_active IP Right Cessation
-
2000
- 2000-10-12 US US10/110,352 patent/US6684991B1/en not_active Expired - Fee Related
- 2000-10-12 WO PCT/AT2000/000264 patent/WO2001027487A1/de active IP Right Grant
- 2000-10-12 EP EP00967416A patent/EP1224405B1/de not_active Expired - Lifetime
- 2000-10-12 CA CA002385717A patent/CA2385717C/en not_active Expired - Fee Related
- 2000-10-12 US US09/689,198 patent/US6484856B1/en not_active Expired - Lifetime
- 2000-10-12 DE DE50009376T patent/DE50009376D1/de not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4924989A (en) * | 1987-11-25 | 1990-05-15 | Valeo | Automatic clutch control system for coupling two rotating shafts |
EP0926378A2 (de) * | 1997-12-17 | 1999-06-30 | New Venture Gear, Inc. | Hydraulische Kupplung für Fahrzeugkraftübertragungssystem |
DE19854867A1 (de) * | 1997-12-23 | 1999-06-24 | Steyr Daimler Puch Ag | Drehzahldifferenzabhängige hydraulische Kupplung |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2004051108A1 (de) | 2002-11-29 | 2004-06-17 | Magna Steyr Powertrain Ag & Co Kg | Drehzahldifferenzabhängige kupplung mit magnetorheologischem arbeitsfluid |
WO2004097241A2 (de) | 2003-04-28 | 2004-11-11 | Magna Steyr Powertrain Ag & Co Kg | Drehzahldifferenzabhängige hydraulische kupplung mit steuerventil |
WO2004097241A3 (de) * | 2003-04-28 | 2005-06-23 | Magna Steyr Powertrain Ag & Co | Drehzahldifferenzabhängige hydraulische kupplung mit steuerventil |
DE102004048085A1 (de) * | 2004-09-30 | 2006-04-06 | Zf Friedrichshafen Ag | Schaltbarer Stabilisator für ein Kraftfahrzeug |
Also Published As
Publication number | Publication date |
---|---|
AT3832U1 (de) | 2000-08-25 |
US6484856B1 (en) | 2002-11-26 |
CA2385717C (en) | 2009-11-24 |
EP1224405B1 (de) | 2005-01-26 |
US6684991B1 (en) | 2004-02-03 |
DE50009376D1 (de) | 2005-03-03 |
CA2385717A1 (en) | 2001-04-19 |
ATE288037T1 (de) | 2005-02-15 |
EP1224405A1 (de) | 2002-07-24 |
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