EP1750955A1 - Stabilisatoranordnung für ein kraftfahrzeug - Google Patents
Stabilisatoranordnung für ein kraftfahrzeugInfo
- Publication number
- EP1750955A1 EP1750955A1 EP05755893A EP05755893A EP1750955A1 EP 1750955 A1 EP1750955 A1 EP 1750955A1 EP 05755893 A EP05755893 A EP 05755893A EP 05755893 A EP05755893 A EP 05755893A EP 1750955 A1 EP1750955 A1 EP 1750955A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- piston
- valve
- cylinder
- motor vehicle
- stabilizer
- 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.)
- Withdrawn
Links
- 239000003381 stabilizer Substances 0.000 title claims abstract description 69
- 230000001360 synchronised effect Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 10
- 239000012530 fluid Substances 0.000 description 13
- 239000006096 absorbing agent Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000035939 shock Effects 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001141 propulsive effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
- B60G17/015—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements
- B60G17/016—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements characterised by their responsiveness, when the vehicle is travelling, to specific motion, a specific condition, or driver input
- B60G17/0162—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements characterised by their responsiveness, when the vehicle is travelling, to specific motion, a specific condition, or driver input mainly during a motion involving steering operation, e.g. cornering, overtaking
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G21/00—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces
- B60G21/02—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces permanently interconnected
- B60G21/04—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces permanently interconnected mechanically
- B60G21/05—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces permanently interconnected mechanically between wheels on the same axle but on different sides of the vehicle, i.e. the left and right wheel suspensions being interconnected
- B60G21/055—Stabiliser bars
- B60G21/0551—Mounting means therefor
- B60G21/0553—Mounting means therefor adjustable
- B60G21/0555—Mounting means therefor adjustable including an actuator inducing vehicle roll
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2202/00—Indexing codes relating to the type of spring, damper or actuator
- B60G2202/10—Type of spring
- B60G2202/13—Torsion spring
- B60G2202/135—Stabiliser bar and/or tube
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2202/00—Indexing codes relating to the type of spring, damper or actuator
- B60G2202/40—Type of actuator
- B60G2202/41—Fluid actuator
- B60G2202/413—Hydraulic actuator
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2500/00—Indexing codes relating to the regulated action or device
- B60G2500/20—Spring action or springs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2800/00—Indexing codes relating to the type of movement or to the condition of the vehicle and to the end result to be achieved by the control action
- B60G2800/01—Attitude or posture control
- B60G2800/012—Rolling condition
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2800/00—Indexing codes relating to the type of movement or to the condition of the vehicle and to the end result to be achieved by the control action
- B60G2800/24—Steering, cornering
Definitions
- the invention relates to a stabilizer arrangement for a motor vehicle, an adjustable piston-cylinder unit being arranged at the ends of the stabilizer, which is connected in an articulated manner to a resilient wheel carrier part.
- switchable components are to use hydraulic length-adjustable adjusting elements, such as piston-cylinder units, instead of the fixed pendulum supports, as is disclosed, for example, in US Pat. No. 4,206,935.
- the variable-length piston-cylinder units arranged between the stabilizer and the motor vehicle body are connected to one another with hydraulic lines, the one facing the stabilizer and the other
- Cylinder chambers facing away from the stabilizer are connected to each other via a hydraulic line.
- a valve is inserted into these hydraulic lines, which can block or activate both hydraulic lines at the same time.
- Rolling movements of the vehicle can be transferred to the other side of the vehicle. If, on the other hand, the hydraulic line is released by the valve, the pistons in the cylinders can move freely during roll movements of the vehicle, so that the roll movements cannot be absorbed by the stabilizer. Hydraulic fluid flows from one piston-cylinder unit to the other.
- a disadvantage of this arrangement is that when the hydraulic lines are blocked, the pistons in the cylinders are not in a defined and determinable position. The stabilizer can therefore be outside the construction or installation position, so that the driving properties are negatively affected.
- Another arrangement for switchable pendulum supports is used in the all-terrain vehicle Nissan Patrol.
- a clutch consisting of a spring-loaded pin, acts on a piston, the pin engaging in a bore in the piston and thus blocking the piston. If the clutch is released, the piston can move freely in the cylinder.
- a disadvantage of this design is that the bolt only engages in the bore when the bolt and the bore are aligned. The operator has no influence on this. In the worst case, the vehicle drives without the stabilizer effect despite the clutch being actuated. With this system, the driver receives no feedback as to the extent to which the piston is blocked
- the object of the invention is therefore to provide a stabilizer arrangement for a motor vehicle with switchable piston-cylinder units, which allows the stabilizer to be converted from an inactive state to an active state, the piston-cylinder units and the stabilizer being in a defined position for a safe driving condition.
- a stabilizer arrangement for a motor vehicle has a stabilizer connected to the vehicle body, which is connected to a resilient wheel carrier part on each side of the vehicle by means of a piston-cylinder unit.
- the piston-cylinder units consist at least of a piston movably arranged in a cylinder and are at one end articulated at one end of the stabilizer and at the other end to the resilient wheel carrier part.
- the piston-cylinder units are connected on the one hand to a hydraulic pump and on the other hand are provided with a stop against which the piston can be moved.
- the respective first cylinder chamber arranged on the side of the piston facing away from the stop can be connected to the hydraulic pump via a hydraulic line, a first valve being provided between the respective first cylinder chamber and the hydraulic pump.
- On the side of the respective first valve facing away from the piston-cylinder unit at least one second valve is arranged and above
- Hydraulic lines can be connected to the respective first valve.
- the respective first valve blocks the flow from the respective first cylinder chamber in the direction of the hydraulic pump in a first switching position, whereas in a second switching position the flow through the valve towards the respective first cylinder chamber and vice versa is made possible.
- the at least one second valve prevents the flow from the respective first cylinder chamber of the piston-cylinder units in the direction of the respective second cylinder chamber arranged on the side of the piston facing the stop, whereas in the second switching position of the at least one second valve one Connection between the respective first cylinder chamber with the respective second cylinder chamber can be established.
- the respective first valve is designed as an electromagnetically operable 2/2-way valve, which takes over the function of a check valve in its first switching position.
- This arrangement allows the pistons in the piston-cylinder unit to move freely for off-road driving, since an exchange of the hydraulic fluid between the first and the second cylinder chamber is made possible.
- the first valve and the at least one second valve are each in their first switching position.
- the stabilizer has no effect with this circuit.
- the valves are switched in such a way that the hydraulic pump can deliver hydraulic fluid into the first cylinder chamber.
- the pistons move against a stop forming a defined end position.
- the respective first valves and the at least one second valve are advantageously in their respective second switching positions.
- the piston of the piston-cylinder unit is held in the position in contact with the stop.
- the stabilizer is thus held in a fixed position in which the stabilizer can develop its effect, for example for normal road travel, and can transmit forces or roll movements from one side of the vehicle to the other.
- the stabilizer or the piston-cylinder units can thus be safely transferred from a freely movable position to a defined position held there, in which a safe driving behavior for road operation can be guaranteed.
- the second valve is designed as a 3/2-way valve, which blocks the flow from the hydraulic pump in the direction of the piston-cylinder units in the second switching position.
- the second switching position in connection with the second switching position of the first valve in each case, it establishes a connection which can flow through in both directions between the respective first cylinder chamber and the respective second cylinder chamber.
- a tank is advantageously arranged which also serves as a reservoir for the pump.
- the servo steering pump of the motor vehicle can be used as the hydraulic pump, which saves considerable installation space.
- the servo steering pump runs during the entire operation of the vehicle, which avoids additional circuitry for a separate hydraulic pump. It is advantageous to use a pressure relief valve.
- 1 a schematic representation of a stabilizer arrangement with piston-cylinder units for a motor vehicle
- 2 shows a sectional illustration of a piston-cylinder unit used according to the invention
- FIG. 3 a hydraulic circuit diagram for a stabilizer arrangement according to the invention with a switching position for road operation
- FIG. 4 a hydraulic circuit diagram for a stabilizer arrangement according to the invention with a switching position for off-road use
- FIG. 1 An exemplary schematic stabilizer arrangement is shown in FIG. 1, wherein a stabilizer 1 is held in a pivoting manner in bearing points 2 on a vehicle body. At its ends, the stabilizer is articulated to a piston-cylinder unit 4, 4 '. At its end facing away from the stabilizer 1, the piston-cylinder unit 4, 4 'is articulated to a resilient wheel carrier part, for example to a shock absorber part 6 connected to a vehicle wheel 5.
- a piston 8 arranged in a cylinder 7 has a two-sided piston rod 9, the first piston rod side 9a emerging from the cylinder 7 and being provided at its end with a receptacle 10 for articulated connection to the stabilizer 1.
- the second piston rod side 9b runs with sufficient clearance in a sleeve 11 arranged in the cylinder 7, the sleeve 11 being screwed into the cylinder 7 in an advantageous manner.
- the sleeve 11 is provided with a further receptacle 12 for articulated connection to the shock absorber 6.
- a stop 13 is arranged inside the cylinder 7, against which the piston 8 can be moved, as shown in Fig. 2, the stop 13 can be fixed in a variety of ways known per se in the cylinders.
- connection bores 14, 15 are arranged, to which hydraulic lines for pressurizing the piston 8 can be connected.
- a first cylinder chamber 16 is supplied with hydraulic fluid via the connection bore 14, whereas a second cylinder chamber 17 lying on the other side of the piston 8 is supplied with hydraulic fluid via the connection bore 15, so that the piston 8 is pressurized from both sides can be.
- the first cylinder chamber 16 is arranged on the side of the piston 8 facing away from the stop 13 and the second cylinder chamber 17 is arranged on the side of the piston 8 facing the stop 13.
- Cylinder chambers 16, 16 ' are each connected to a first electro-mechanically actuable 2/2-way valve 18, 18' via the connection bores 14, 14 'by means of a hydraulic line.
- the 2/2-way valves 18, 18' are connected to a second 3/2-way valve 19, with each of the 2/2-way valves 18, 18 'outgoing hydraulic lines are merged.
- the 3/2-way valve 19 is in turn connected on the side facing away from the piston-cylinder unit 4, 4 ′ on the one hand to a hydraulic pump 20 and on the other hand to a tank 21.
- the continuously running servo-steering pump of the motor vehicle can advantageously be used as the hydraulic pump 20, as a result of which the effort and space required in the vehicle is significantly reduced.
- the second cylinder chambers 17, 17 'arranged on the side facing the stop 13, 13 are connected directly to the tank 21 via the connection bores 15, 15' by means of hydraulic lines.
- the hydraulic lines extending from the cylinders 7, 7 'at the connection bores 14, 14'15, 15' are designed to be flexible in a section 22, 22 'to compensate for movements of the cylinders 7, 7'.
- a pressure relief valve 23 is also used in the hydraulic circuit.
- the pistons 8, 8 ' which bear against the stop 13, 13' in their starting position in FIG. 3, cannot move away from the respective stop 13, 13 'into the respective first cylinder chambers 16, 16'.
- the piston-cylinder units 4, 4 ' are thus rigid overall, as a result of which the stabilizer 1 can transmit forces or torques from one vehicle side to the other vehicle side. In this switch position intended for road operation, safe driving behavior can be guaranteed.
- the roll movements can be minimized by the activated effect of the stabilizer 1.
- Overpressures as can occur due to the hydraulic pump 20 which is constantly running in this embodiment, are intercepted by the pressure limiting valve 23. For off-road use, an enlarged axle lock is now necessary so that all wheels are in constant contact with the ground, thus ensuring propulsion.
- the 2/2-way valves 18, 18 'as well as the 3/2-way valve 19 are energized, ie switched and thus brought into their respective second switching position. This is preferably done by the driver using manual shift actuation from the vehicle interior. In this switching position of the directional control valves 18, 18 'and 19 shown in FIG. 4, both the first 2/2-way valve 18, 18' and the second 3/2-way valve 19 can be flowed through by the hydraulic fluid in both directions.
- Directional control valve 19 connects the respective first cylinder chambers 16, 16 'to the tank 21. Since the respective second cylinder chambers 17, 17 'are also connected to the tank, hydraulic fluid can now be exchanged between the first cylinder chambers 16, 16' and the second cylinder chambers 17, 17 'in both directions.
- the stabilizer arrangement can be returned to the road operation with an effective stabilizer effect via a so-called fallback level as shown in FIG. 5.
- the 3/2-way valve 19 is switched manually by the driver. In this way, hydraulic fluid can get from the respective second cylinder chambers 17, 17 'into the respective first cylinder chambers 16, 16', but not vice versa, since this is prevented by the check valve function of the 2/2-way valve 18, 18 '. Due to the movements while driving, the pistons 8, 8 'can also move in the direction of the respective stops 13, 13', but not away from them.
- Stabilizer arrangement is thus able to move automatically from an arbitrary off-road position of the piston-cylinder units 4, 4 'into the starting position (road operation), in which the piston 8, 8' is in a defined position against the stop 13, 13 'in the cylinder 7, 7 'are to be transferred.
- the fallback level thus describes a restricted function of the system when the hydraulic pump 20 has failed.
- the piston-cylinder units 4, 4 ' can also be described as switchable pendulum supports, since they are used instead of fixed pendulum supports and their functions can be switched on and off. If the piston 8, 8 'in the piston-cylinder unit 4, 4' is fixed against the stop 13, 13 ', the piston, cylinder units 4, 4' have the same function as fixed pendulum supports.
- the invention is not only limited to this exemplary embodiment and can also be carried out in other ways.
- a separate hydraulic pump can be used instead of the constantly rotating power steering pump. This then allows the pump to be switched independently since it does not have to run continuously. However, this also increases the circuit complexity and disadvantageously requires additional installation space.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vehicle Body Suspensions (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102004025807A DE102004025807B4 (de) | 2004-05-24 | 2004-05-24 | Stabilisatoranordnung für ein Kraftfahrzeug |
| PCT/DE2005/000935 WO2005113268A1 (de) | 2004-05-24 | 2005-05-20 | Stabilisatoranordnung für ein kraftfahrzeug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP1750955A1 true EP1750955A1 (de) | 2007-02-14 |
Family
ID=34971448
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP05755893A Withdrawn EP1750955A1 (de) | 2004-05-24 | 2005-05-20 | Stabilisatoranordnung für ein kraftfahrzeug |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US7699322B2 (de) |
| EP (1) | EP1750955A1 (de) |
| JP (1) | JP4542142B2 (de) |
| CN (1) | CN100478202C (de) |
| DE (1) | DE102004025807B4 (de) |
| WO (1) | WO2005113268A1 (de) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006061975B4 (de) | 2006-12-21 | 2008-11-20 | Zf Friedrichshafen Ag | Radaufhängung |
| DE102007062146A1 (de) * | 2007-12-21 | 2009-06-25 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | System zur aktiven Wankstabilisierung |
| CN102444687B (zh) * | 2010-10-11 | 2013-09-25 | 伊卡路斯(苏州)车辆系统有限公司 | 恒压阻尼控制缓冲系统 |
| DE102012110656B4 (de) * | 2012-11-07 | 2026-03-26 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Stabilisatoranordnung für ein Fahrwerk eines Kraftfahrzeugs |
| CN103786545B (zh) * | 2014-01-21 | 2016-05-04 | 郑州宇通客车股份有限公司 | 一种车辆主动稳定杆系统 |
Family Cites Families (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2006131A (en) * | 1977-10-21 | 1979-05-02 | Vauxhall Motors Ltd | Motor vehicle roll control system |
| JPS5766009A (en) * | 1980-10-07 | 1982-04-22 | Mazda Motor Corp | Stabilizer controlling device for automobile |
| JPH0717142B2 (ja) * | 1987-11-19 | 1995-03-01 | 日本電装株式会社 | スタビライザ制御装置 |
| JPH074969Y2 (ja) * | 1988-12-28 | 1995-02-08 | 日本発条株式会社 | スタビライザ制御装置 |
| DE4125285C2 (de) * | 1991-07-31 | 1996-12-12 | Daimler Benz Ag | Zylinder-Kolbenaggregat |
| US5362094A (en) * | 1993-06-09 | 1994-11-08 | General Motors Corporation | Hydraulically controlled stabilizer bar system |
| JP3464029B2 (ja) * | 1993-12-24 | 2003-11-05 | ヤマハ発動機株式会社 | 車両のスタビライザー装置 |
| US5549328A (en) * | 1995-01-17 | 1996-08-27 | Gabriel Ride Control Products, Inc. | Roll control system |
| GB9626045D0 (en) * | 1996-12-14 | 1997-01-29 | Rover Group | A vehicle roll stabilising system |
| GB9812274D0 (en) * | 1998-06-09 | 1998-08-05 | Rover Group | Hydraulic control systems |
| CN2333839Y (zh) * | 1998-06-29 | 1999-08-18 | 陈贤武 | 双向作用气筒式减震器 |
| GB2343663B (en) * | 1998-11-16 | 2002-03-20 | Delphi France Automotive Sys | A roll control system for a motor vehicle |
| EP1022169B1 (de) * | 1999-01-22 | 2008-03-12 | Delphi Technologies, Inc. | Wankregelungssystem für ein Kraftfahrzeug |
| EP1103395B1 (de) * | 1999-11-26 | 2009-05-06 | Delphi Technologies, Inc. | Fahrzeugrollregelungssystem |
| GB0108919D0 (en) * | 2001-04-10 | 2001-05-30 | Delphi Tech Inc | Vehicle roll control system |
| US6575484B2 (en) * | 2001-07-20 | 2003-06-10 | Husco International, Inc. | Dual mode regenerative suspension for an off-road vehicle |
| JP2004136814A (ja) * | 2002-10-18 | 2004-05-13 | Kayaba Ind Co Ltd | 捩り剛性力制御装置 |
-
2004
- 2004-05-24 DE DE102004025807A patent/DE102004025807B4/de not_active Expired - Fee Related
-
2005
- 2005-05-20 JP JP2007516959A patent/JP4542142B2/ja not_active Expired - Fee Related
- 2005-05-20 EP EP05755893A patent/EP1750955A1/de not_active Withdrawn
- 2005-05-20 US US11/569,534 patent/US7699322B2/en not_active Expired - Fee Related
- 2005-05-20 CN CNB2005800166167A patent/CN100478202C/zh not_active Expired - Fee Related
- 2005-05-20 WO PCT/DE2005/000935 patent/WO2005113268A1/de not_active Ceased
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2005113268A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| US20070267825A1 (en) | 2007-11-22 |
| US7699322B2 (en) | 2010-04-20 |
| JP2008500228A (ja) | 2008-01-10 |
| DE102004025807B4 (de) | 2009-01-22 |
| JP4542142B2 (ja) | 2010-09-08 |
| CN1960886A (zh) | 2007-05-09 |
| WO2005113268A1 (de) | 2005-12-01 |
| DE102004025807A1 (de) | 2006-01-12 |
| CN100478202C (zh) | 2009-04-15 |
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Legal Events
| Date | Code | Title | Description |
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| 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 |
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| 17P | Request for examination filed |
Effective date: 20061110 |
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| RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: WESTPHAL, OLIVER Inventor name: HAEUSLER, FELIX Inventor name: HAMMELMAIER, ULLRICH Inventor name: ERSOY, METIN |
|
| DAX | Request for extension of the european patent (deleted) | ||
| RIC1 | Information provided on ipc code assigned before grant |
Ipc: B60G 21/055 20060101AFI20111205BHEP |
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| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
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| 18D | Application deemed to be withdrawn |
Effective date: 20110901 |