WO2005077731A1 - Fahrzeuglenkung - Google Patents
Fahrzeuglenkung Download PDFInfo
- Publication number
- WO2005077731A1 WO2005077731A1 PCT/EP2005/050535 EP2005050535W WO2005077731A1 WO 2005077731 A1 WO2005077731 A1 WO 2005077731A1 EP 2005050535 W EP2005050535 W EP 2005050535W WO 2005077731 A1 WO2005077731 A1 WO 2005077731A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- hydraulic
- steering
- valve
- pressure
- vehicle
- 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.)
- Ceased
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/021—Valves for interconnecting the fluid chambers of an actuator
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D5/00—Power-assisted or power-driven steering
- B62D5/06—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle
- B62D5/08—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle characterised by type of steering valve used
- B62D5/087—Sliding spool valves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D5/00—Power-assisted or power-driven steering
- B62D5/06—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle
- B62D5/09—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle characterised by means for actuating valves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D6/00—Arrangements for automatically controlling steering depending on driving conditions sensed and responded to, e.g. control circuits
- B62D6/08—Arrangements for automatically controlling steering depending on driving conditions sensed and responded to, e.g. control circuits responsive only to driver input torque
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/006—Hydraulic "Wheatstone bridge" circuits, i.e. with four nodes, P-A-T-B, and on-off or proportional valves in each link
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B20/00—Safety arrangements for fluid actuator systems; Applications of safety devices in fluid actuator systems; Emergency measures for fluid actuator systems
- F15B20/008—Valve failure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
- F15B2211/205—Systems with pumps
- F15B2211/20507—Type of prime mover
- F15B2211/20523—Internal combustion engine
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/30—Directional control
- F15B2211/305—Directional control characterised by the type of valves
- F15B2211/30525—Directional control valves, e.g. 4/3-directional control valve
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/30—Directional control
- F15B2211/305—Directional control characterised by the type of valves
- F15B2211/3056—Assemblies of multiple valves
- F15B2211/30565—Assemblies of multiple valves having multiple valves for a single output member, e.g. for creating higher valve function by use of multiple valves like two 2/2-valves replacing a 5/3-valve
- F15B2211/30575—Assemblies of multiple valves having multiple valves for a single output member, e.g. for creating higher valve function by use of multiple valves like two 2/2-valves replacing a 5/3-valve in a Wheatstone Bridge arrangement (also half bridges)
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/30—Directional control
- F15B2211/31—Directional control characterised by the positions of the valve element
- F15B2211/3105—Neutral or centre positions
- F15B2211/3111—Neutral or centre positions the pump port being closed in the centre position, e.g. so-called closed centre
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/30—Directional control
- F15B2211/31—Directional control characterised by the positions of the valve element
- F15B2211/3105—Neutral or centre positions
- F15B2211/3116—Neutral or centre positions the pump port being open in the centre position, e.g. so-called open centre
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/30—Directional control
- F15B2211/31—Directional control characterised by the positions of the valve element
- F15B2211/3144—Directional control characterised by the positions of the valve element the positions being continuously variable, e.g. as realised by proportional valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/30—Directional control
- F15B2211/315—Directional control characterised by the connections of the valve or valves in the circuit
- F15B2211/3157—Directional control characterised by the connections of the valve or valves in the circuit being connected to a pressure source, an output member and a return line
- F15B2211/31576—Directional control characterised by the connections of the valve or valves in the circuit being connected to a pressure source, an output member and a return line having a single pressure source and a single output member
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/30—Directional control
- F15B2211/32—Directional control characterised by the type of actuation
- F15B2211/327—Directional control characterised by the type of actuation electrically or electronically
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/30—Directional control
- F15B2211/32—Directional control characterised by the type of actuation
- F15B2211/329—Directional control characterised by the type of actuation actuated by fluid pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/60—Circuit components or control therefor
- F15B2211/63—Electronic controllers
- F15B2211/6303—Electronic controllers using input signals
- F15B2211/6306—Electronic controllers using input signals representing a pressure
- F15B2211/6313—Electronic controllers using input signals representing a pressure the pressure being a load pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/60—Circuit components or control therefor
- F15B2211/63—Electronic controllers
- F15B2211/6303—Electronic controllers using input signals
- F15B2211/6336—Electronic controllers using input signals representing a state of the output member, e.g. position, speed or acceleration
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/60—Circuit components or control therefor
- F15B2211/63—Electronic controllers
- F15B2211/6303—Electronic controllers using input signals
- F15B2211/6346—Electronic controllers using input signals representing a state of input means, e.g. joystick position
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
- F15B2211/765—Control of position or angle of the output member
Definitions
- the analog valves or analog valves which are preferred for the vehicle steering system according to the invention are proportional valves. These are in particular proportionally controlled or operated solenoid valves or piezo valves.
- seat valves e.g. 2/2-way poppet valves with two inputs and / or outputs are used, the inputs and outputs being connected to one another in one (open) switching position and separated from one another in the other (closed) switching position.
- Fig. 3 shows a further embodiment of a steering system with an open center according to the invention.
- the pressure control here does not take place in accordance with pressure sensor signals (51, 52 in FIG. 2), but a linear travel sensor 53 is provided on the actuator 27.
- a linear travel sensor 53 is provided on the actuator 27.
- the hydraulic pressures in the chambers 18, 19 are determined or estimated and used 54 to control the steering assistance.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Analytical Chemistry (AREA)
- Steering Control In Accordance With Driving Conditions (AREA)
Abstract
Description
Claims
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP05716646A EP1713678A1 (de) | 2004-02-10 | 2005-02-08 | Fahrzeuglenkung |
| DE112005000221T DE112005000221A5 (de) | 2004-02-10 | 2005-02-08 | Fahrzeuglenkung |
| JP2006552613A JP2007522020A (ja) | 2004-02-10 | 2005-02-08 | 車両ステアリング装置 |
| US10/588,983 US20070169471A1 (en) | 2004-02-10 | 2005-02-08 | Vehicle steering mechanism |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102004006581 | 2004-02-10 | ||
| DE102004006581.0 | 2004-02-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2005077731A1 true WO2005077731A1 (de) | 2005-08-25 |
Family
ID=34853418
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2005/050535 Ceased WO2005077731A1 (de) | 2004-02-10 | 2005-02-08 | Fahrzeuglenkung |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20070169471A1 (de) |
| EP (1) | EP1713678A1 (de) |
| JP (1) | JP2007522020A (de) |
| WO (1) | WO2005077731A1 (de) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006037793A1 (de) * | 2004-10-06 | 2006-04-13 | Siemens Aktiengesellschaft | Zweistufiges servoventil |
| WO2006069922A3 (de) * | 2004-12-27 | 2006-10-19 | Continental Teves Ag & Co Ohg | Fahrzeuglenkung und verfahren zur regelung einer fahrzeuglenkung |
| JP2008094351A (ja) * | 2006-10-16 | 2008-04-24 | Toyota Motor Corp | パワーステアリング装置 |
| WO2008095498A1 (en) * | 2007-02-07 | 2008-08-14 | Sauer-Danfoss Aps | A valve assembly and a hydraulic actuator comprising the valve assembly |
| US7624671B2 (en) | 2007-02-07 | 2009-12-01 | Sauer-Danfoss Aps | Hydraulic actuator for a servomotor with an end lock function |
| US7677035B2 (en) | 2007-02-07 | 2010-03-16 | Sauer-Danfoss Aps | Control system for a hydraulic servomotor |
| US7690196B2 (en) | 2007-02-07 | 2010-04-06 | Sauer-Danfoss Aps | Hydraulic actuator having an auxiliary valve |
| EP2199186A1 (de) * | 2008-12-17 | 2010-06-23 | HAWE Hydraulik SE | Hydraulische Lenksteuervorrichtung |
| WO2010118802A1 (de) * | 2009-04-17 | 2010-10-21 | Festo Ag & Co. Kg | Fluidtechnisches system |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DK3020983T3 (da) * | 2014-11-14 | 2020-08-10 | Danfoss Power Solutions Aps | Indgangsmodul til en ventilgruppe |
| IT201900010539A1 (it) * | 2019-07-01 | 2021-01-01 | Ognibene Power Spa | Gruppo di sterzatura idrostatico |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4715464A (en) * | 1985-12-27 | 1987-12-29 | Toyoda Koki Kabushiki Kaisha | Power steering system with hydraulic reaction |
| DE3936246A1 (de) * | 1988-10-31 | 1990-05-03 | Mitsubishi Motors Corp | |
| US5259474A (en) * | 1991-02-05 | 1993-11-09 | Jidosha Kiki Co., Ltd. | Steering force control apparatus for power steering system |
| DE4242441C1 (de) * | 1992-12-16 | 1994-05-19 | Daimler Benz Ag | Servosteuerung, insbesondere Servolenkung für Kraftfahrzeuge |
| DE19840625A1 (de) * | 1998-09-05 | 2000-03-09 | Daimler Chrysler Ag | Lenkventilanordnung eines hydraulischen Lenksystems |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63232074A (ja) * | 1987-03-20 | 1988-09-28 | Toyota Central Res & Dev Lab Inc | 車両用操舵装置 |
| DE4330338C1 (de) * | 1993-09-08 | 1994-09-08 | Daimler Benz Ag | Fluidische, insbesondere hydraulische Servosteuerung |
| JP3687252B2 (ja) * | 1997-02-28 | 2005-08-24 | 日産自動車株式会社 | 自動車の操舵装置 |
| DE19819404C2 (de) * | 1998-04-30 | 2000-03-02 | Daimler Chrysler Ag | Lenkvorrichtung |
-
2005
- 2005-02-08 EP EP05716646A patent/EP1713678A1/de not_active Withdrawn
- 2005-02-08 US US10/588,983 patent/US20070169471A1/en not_active Abandoned
- 2005-02-08 JP JP2006552613A patent/JP2007522020A/ja not_active Withdrawn
- 2005-02-08 WO PCT/EP2005/050535 patent/WO2005077731A1/de not_active Ceased
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4715464A (en) * | 1985-12-27 | 1987-12-29 | Toyoda Koki Kabushiki Kaisha | Power steering system with hydraulic reaction |
| DE3936246A1 (de) * | 1988-10-31 | 1990-05-03 | Mitsubishi Motors Corp | |
| US5259474A (en) * | 1991-02-05 | 1993-11-09 | Jidosha Kiki Co., Ltd. | Steering force control apparatus for power steering system |
| DE4242441C1 (de) * | 1992-12-16 | 1994-05-19 | Daimler Benz Ag | Servosteuerung, insbesondere Servolenkung für Kraftfahrzeuge |
| DE19840625A1 (de) * | 1998-09-05 | 2000-03-09 | Daimler Chrysler Ag | Lenkventilanordnung eines hydraulischen Lenksystems |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006037793A1 (de) * | 2004-10-06 | 2006-04-13 | Siemens Aktiengesellschaft | Zweistufiges servoventil |
| US7757714B2 (en) | 2004-10-06 | 2010-07-20 | Siemens Aktiengesellschaft | Two-stage servo-valve |
| WO2006069922A3 (de) * | 2004-12-27 | 2006-10-19 | Continental Teves Ag & Co Ohg | Fahrzeuglenkung und verfahren zur regelung einer fahrzeuglenkung |
| JP2008094351A (ja) * | 2006-10-16 | 2008-04-24 | Toyota Motor Corp | パワーステアリング装置 |
| WO2008095498A1 (en) * | 2007-02-07 | 2008-08-14 | Sauer-Danfoss Aps | A valve assembly and a hydraulic actuator comprising the valve assembly |
| US7624671B2 (en) | 2007-02-07 | 2009-12-01 | Sauer-Danfoss Aps | Hydraulic actuator for a servomotor with an end lock function |
| US7677035B2 (en) | 2007-02-07 | 2010-03-16 | Sauer-Danfoss Aps | Control system for a hydraulic servomotor |
| US7690196B2 (en) | 2007-02-07 | 2010-04-06 | Sauer-Danfoss Aps | Hydraulic actuator having an auxiliary valve |
| US7849686B2 (en) | 2007-02-07 | 2010-12-14 | Sauer-Danfoss Aps | Valve assembly and a hydraulic actuator comprising the valve assembly |
| EP2199186A1 (de) * | 2008-12-17 | 2010-06-23 | HAWE Hydraulik SE | Hydraulische Lenksteuervorrichtung |
| WO2010118802A1 (de) * | 2009-04-17 | 2010-10-21 | Festo Ag & Co. Kg | Fluidtechnisches system |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1713678A1 (de) | 2006-10-25 |
| JP2007522020A (ja) | 2007-08-09 |
| US20070169471A1 (en) | 2007-07-26 |
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