EP2552760A1 - Rail vehicle with a bogie comprising discrete streamlined elements designed to improve the aerodynamic performance of said bogie - Google Patents
Rail vehicle with a bogie comprising discrete streamlined elements designed to improve the aerodynamic performance of said bogieInfo
- Publication number
- EP2552760A1 EP2552760A1 EP11709134A EP11709134A EP2552760A1 EP 2552760 A1 EP2552760 A1 EP 2552760A1 EP 11709134 A EP11709134 A EP 11709134A EP 11709134 A EP11709134 A EP 11709134A EP 2552760 A1 EP2552760 A1 EP 2552760A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- vehicle
- floor
- bogie
- faired
- discrete
- 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- Withdrawn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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
- B61D17/00—Construction details of vehicle bodies
- B61D17/02—Construction details of vehicle bodies reducing air resistance by modifying contour ; Constructional features for fast vehicles sustaining sudden variations of atmospheric pressure, e.g. when crossing in tunnels
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T30/00—Transportation of goods or passengers via railways, e.g. energy recovery or reducing air resistance
Definitions
- the invention relates to the optimization of the aerodynamic behavior of railway vehicles during their displacement.
- a high speed train, of the TGV ® type reaches speeds in excess of 300 km / h.
- the movement of a train generates noise likely to hamper residents of rail transport infrastructure.
- An improvement in the aerodynamic behavior of trains is therefore also intended to reduce this noise pollution.
- an immediate solution consists in providing a profiled cowl that is mounted around the bogie so as to isolate the bogie from the bogie. flow of air flowing under the motor. With such a hood, the aerodynamic behavior of the motor is improved and energy consumption decreased. However, such a shroud hood does not allow access to the equipment of the bogie which requires removing the cover before any maintenance and maintenance.
- the invention relates to a railway vehicle comprising a floor under which is mounted at least one support bogie of the vehicle intended to circulate on a taxiway, a vehicle characterized by the fact that comprises discrete fairing elements, mounted under the floor and arranged to improve the aerodynamic behavior of said truck during the longitudinal movement of the vehicle.
- a flow of air flows from front to rear of the vehicle, the front and rear directions being defined with respect to the direction of movement of the vehicle.
- the discrete faired elements are shifted transversely relative to each other in a plane transverse to the direction of longitudinal displacement of the vehicle.
- the discrete faired elements are offset longitudinally relative to each other with respect to the direction of longitudinal displacement of the vehicle.
- the orthogonal projection of the discrete faired elements in a plane transverse to the direction of longitudinal displacement of the vehicle, has an uninterrupted overall contour.
- the carinated elements are discrete, that is to say disjointed from each other. They may be offset transversely or longitudinally relative to each other with respect to the direction of longitudinal displacement of the vehicle.
- the faired elements advantageously perform the same function as a global profiled cowling surrounding the bogie, because the air flow comes into contact with at least one of the streamlined elements. discreet during its circulation under the floor.
- the orthogonal projection of a single hood surrounding the bogie is substantially identical to that of the plurality of discrete faired elements.
- the discrete faired elements generally protect devices or modules mounted under the floor behind said discrete faired elements.
- the bogie is connected to the floor of the vehicle by an anti-lace device, a faired protection being mounted on said anti-lace device.
- the anti-yaw device comprises a damper connected at a first end to the bogie and, at a second end, to a footboard secured to the floor, the fairing protection being mounted on the front face of the foot of the body .
- the fairing protection advantageously makes it possible to limit its disturbances.
- the faired protection comprises two lateral faces symmetrical with respect to a longitudinal plane passing through said faired protection.
- the faired protection has an increasing section towards the floor, preferably flared vertically towards the floor of the vehicle.
- the foot is integrated in the floor of the vehicle.
- the vehicle running from the rear to the front comprises at least one air deflection rake mounted under the floor in front of the bogie and arranged to guide a flow of air between the bogie and the taxiway and modify the structure of the flow.
- the air deflection rake advantageously deflects the flow of air to the traffic lane thus avoiding the impact thereof with the devices and modules mounted under the floor.
- the air deflection rake is mounted under the floor of the vehicle and extends orthogonally to the longitudinal direction of travel of the vehicle. More preferably, the air deflection rake is in the form of a streamlined element of triangular section of which a stop is crenellated.
- the vehicle comprises at least one operational module mounted under the floor of the vehicle, a smoothing cap being mounted under the floor of the vehicle, the hood comprising at least one receiving opening of said operating module formed in its outer casing, the cover being dimensioned so that said operational module is flush with the outer casing of the cover.
- the operational module integrated in the smoothing cap, is no longer a source of aerodynamic disturbance.
- the discrete faired elements are mounted in front of the bogie.
- the bogie is thus protected by the discrete faired elements.
- FIG. 1 shows a perspective side view of a railway power train according to a first embodiment of the invention
- FIG. 2 represents a close-up perspective view of the side of the bogie of the power car of FIG. 1;
- FIG. 3 represents a bottom perspective view of the bogie of the power car of FIGS. 1 and 2;
- FIG. 4 shows a schematic side view of a faired protection on a bogie body stand according to the invention
- FIG. 5 represents a diagrammatic perspective view from below of the faired protection of FIG. 4;
- FIG. 6 represents a perspective view from below of a railway power train according to a second embodiment of the invention.
- FIG. 7 represents a close perspective view from below of the power unit of FIG. 6;
- FIG. 8 represents a schematic perspective view of an air deflection rake mounted under the floor of the power car of FIG. 7;
- FIG. 9 represents a perspective view from below of a train with a power unit according to FIGS. 6 and 7.
- a railway vehicle such as a train, comprises a motor and one or more cars, connected with each other, which are towed by the motor, the cars can be articulated with each other as it is. is for example the case with the TGV® train.
- the train moves back and forth on a taxiway which preferably includes rails resting on wooden or concrete sleepers.
- the motor located at the front of the train, pulls the cars behind the motor.
- the train comprises only a single motor, but it goes without saying that the invention also applies to a train having a plurality of engines.
- the driving 1 of the train and its following cars rely on bogies, known to those skilled in the art, which are arranged to support the weight of the train on the rails of the taxiway.
- bogies known to those skilled in the art, which are arranged to support the weight of the train on the rails of the taxiway.
- a car simultaneously rests on two bogies located at each end of the car.
- the motor includes two motor bogies (a first motor bogie located at the front of the power car, and a second motor bogie at the rear of the power car), arranged to move the power car on the rails, while the cars include bogies. carriers (not shown), supporting the weight of cars on the rails and not providing energy for travel.
- the motor bogie 2 of the power train 1 comprises a main body on which are mounted axles and drive wheels of the truck, the bogie 2 being mounted under the floor of the drive.
- the floor of the motor, referenced 10 in FIG. 2 is in the form of a flat surface extending horizontally, the horizontal direction being defined with respect to the taxiway of the vehicle which extends in a horizontal plane.
- the motor 1 transmits to the motor bogie 2 the energy required to move the train.
- the motor bogie 2 like the other bogies, is pivotable relative to the floor 10 to allow the train to negotiate curves during its movement on the taxiway, the pivot connection between the floor and the bogie 2 being well known to those skilled in the art, it will not be detailed later.
- anti-yawing devices are provided between the main body of the bogie 2 and the floor 10 in order to limit the pivoting of the bogie 2 to enable control of the bogie 2.
- An anti-yaw device of the bogie 2 is shown in FIG. 2.
- the floor 10 of the power unit 1 comprises a floor stand 3, in the form of a vertical element (of unformed section and directly exposed to the flow of air) mounted under the floor 10 and extending in the direction of the taxiway.
- a damper called “bogie box” 5, also called anti-yaw damper, is connected on the one hand to the foot of box 3, integral with the floor 10 of the drive 1, and secondly to the main body of the bogie 2.
- the foot 3 is mounted at the lateral end of the floor 10 to allow better damping of the torque of the truck 2 relative to the floor 10.
- the foot of the body is traditionally distant from the center of the floor 10 because it must be away from the pivot axis to dampen the moment of the bogie, that is to say its rotation.
- a bogie comprises two anti-yaw devices. Thereafter, only one of the anti-yaw devices of the truck will be described, this description applies to other devices of the vehicle. Faired protection
- the body foot 3 comprises a discrete element which is, in this example, in the form of a faired protection 4 arranged to improve the aerodynamic behavior of the motor bogie 2 during the longitudinal movement of the vehicle.
- the faired protection 4 is provided on the front face of the footboard 3 which faces the flow of air as shown in Figures 2 and 3.
- the faired protection 4 extends over the entire front face of the stand 3 so that the flow of air does not come into frontal contact but gradually with the guarded protection 4 which protects the body foot 3.
- the latter is in the form of a piece extending longitudinally forwards and comprising two lateral faces 41, 42 which are preferably symmetrical with respect to the Another with respect to a vertical and longitudinal plane passing through the faired protection 4.
- the lateral faces 41, 42 of the faired protection 4 are profiled to allow a circulation of the air flow minimizing the turbulence.
- the section of the faired protection 4, in a horizontal plane is increasing when said horizontal plane is moved vertically towards the floor 10.
- the section of the faired protection 4 in a longitudinal vertical plane is growing when moving said longitudinal vertical plane laterally from the lateral end of the floor 10 inwardly of the floor 10 to its plane of symmetry, then decreasing from its plane of symmetry towards the interior of the floor 10.
- the faired protection 4 further comprises an end face 43 formed at its end farthest from the floor 10 arranged to form a transition face between the lateral faces 41, 42 of the protection 4 and a lower horizontal face 31 of the body foot 3.
- the end face 43 ensures the continuity of the surfaces with the other faces 41, 42, 31.
- the end face 43 of the faired protection 4 allows a fluid circulation of the air flow from the lateral faces 41, 42 to the end face 43 and from the end face 43 to the horizontal lower face 31 of the foot of checkout 3.
- the flow of air generated by the movement of the train, moves longitudinally towards the rear of the train and meets the faired protection 4 whose lateral surfaces 41, 42 deflect the airflow laterally and whose the bottom surface 43 deflects the flow of air to the taxiway.
- the faired protection 4 is thicker at its junction with the floor 10, the air flow circulates fluidly between the side faces 41, 42 of the faired protection 4 and the floor 10.
- the lateral faces 41, 42 ensure the continuity of the surfaces with the horizontal surface of the floor
- the air flow does not encounter any significant aerodynamic obstacle at the feet of the body 3 of the engine bogie 2.
- the invention has been presented here for a single foot box 3 but it goes without saying that it applies similarly to several side feet laterally opposite and / or located on bogies carriers, for example, under a car.
- the faired protection 4 is here reported on the cash register 3 but it goes without saying that the cash register 3 and the faired protection 4 could form a unitary element.
- a bogie engine 2 comprises many elements whose shape generates turbulence.
- a second embodiment of the invention is described with reference to FIGS. 6 to 9.
- the references used to describe elements of structure or function that are identical, equivalent or similar to those of the elements of FIGS. 1 to 5 are the same, to simplify the description.
- the entire description of the first embodiment is not repeated, this description applies to the elements of Figures 6 to 9 when there are no incompatibilities. Only notable differences, structural and functional, are described.
- the power unit 1 comprises, in addition to the keeled protections 4, an air deflection shield called a bow 20 and an air deflection rake 23 mounted under the floor 10 in front of the bogie 2.
- Air deflection shield (bow) Air deflection shield (bow)
- the bow 20 is in the form of a casing located in front of the bogie engine 2, preferably hollow, comprising a horizontal bottom portion 21 and a side portion 19, forming a closed assembly, connected by its upper end to the floor 10 of the powerhead and its lower end to the horizontal bottom portion 21 as shown in Figure 6.
- the bow 20 deflects the airflow laterally, via its side portion 19, and under the floor 10 of the vehicle, via its horizontal bottom portion 21.
- operational modules 7 such as telecommunication modules, are mounted under the stem 20 which deteriorates its aerodynamic behavior.
- a smoothing cover 22 is mounted under the horizontal bottom portion 21 of the stem 20, the smoothing cover 22 comprising at least one opening 24 for receiving said operating module 7 arranged in its outer casing 25, the cover 22 being sized so that said operating module 7 can be flush with the outer casing 25 of the smoothing cap 22 when it is mounted on the vehicle.
- the smoothing hood 22 is in the form of a substantially triangular isosceles-shaped hood whose tip of the triangle is oriented towards the front of the motor 1 and whose median, issuing from said tip , extends longitudinally in the direction of movement of the vehicle 1.
- the smoothing cap 22 is substantially curved and comprises a vertical thickness in order to accommodate the operational modules 7.
- the smoothing cap 22 is connected directly to the bottom wall 21 of the bow 20 sealingly so that the flow of air does not circulate between the bow 20 and the cover 22. It goes without saying that openings 24 of any shape may be suitable.
- the outer casing 25 of the cover 22 comprises openings 24, of square shape in FIG. 7, for receiving the operational modules 7.
- the dimensions of said openings 24 are adapted so that the modules are flush with the outer casing 25. of the smoothing cover 22 when the modules 7 are housed in the smoothing cover 22.
- the smoothing cover 22 is, in this example, profiled from front to rear, its thickness being increasing from the front towards the rear according to a substantially regular slope so that the flow of air flowing under the floor 10, that is to say between the taxiway of the vehicle and its floor 10, is progressively deflected by the smoothing cap 22 to the taxiway to avoid coming into contact with the operational modules 7 and the bogie 2.
- the operational modules 7 being integrated in the smoothing cover 22, the air flow circulates back and forth without turbulence.
- the smoothing cap 22 smooths and controls the flow of air flow on the assembly formed by the floor 10, the bow 20 and the operational modules 7, which is why it is designated smoothing cover 22.
- smoothing cap 22 could be mounted directly under the floor 10, without bow 20, the operational modules 7 being mounted directly under the floor 10.
- the air deflection rake 23 is in the form of a horizontal element which extends orthogonally to the direction of longitudinal displacement of the vehicle.
- the section of the rake 23 of air deflection by a vertical and longitudinal plane is in the form of a right triangle.
- the air deflection rake 23 comprises a horizontal connecting face 29 connected to the bottom portion 21 of the bow 20, a vertical rear face 30 facing the rear of the vehicle and an oblique face 26 of deflection , corresponding to the hypotenuse of the right triangle whose section of the rake 23 to the shape, which is oblique with respect to the bottom portion 21 of the stem 20, the rake 23 being flared from the front to the rear of the vehicle.
- this air deflection element comprises a plurality of teeth 27, it is designated air deflection rake 23.
- two air deflection rakes 23 are mounted under the floor 10 of the vehicle and offset laterally. It goes without saying that a single air deflection rake of greater length (for example equal to the width of the floor 10) could also be suitable.
- each air deflection rake 23 is mounted in front of each of the wheels of the front axle of the engine bogie 2.
- the flow of air circulates, in part, between the teeth 27 of the air deflection rake 23, this allows, by modifying the structure of the flow, to limit the noise emissions and the level of turbulence.
- the deflection rakes 23 are discrete faired elements improving the aerodynamic behavior of said bogie 2 during the longitudinal displacement of the vehicle.
- the air deflection rakes 23 are mounted partially under the smoothing hood 22, only the teeth 27 of the air deflection rakes 23 being protruding with respect to the outer casing 25 of the hood
- the air deflection rakes 23 are dimensioned such that the outer casing 25 of the smoothing cap 22 is at the same height as the bottom surface 28 of the cavities of the air deflection rakes 23.
- the outer casing 25 of the smoothing cap 22 is continuous with the bottom surface 28 of the cavities formed between the teeth 27 of the air deflection rakes 23.
- the air deflection rakes 23 could be mounted directly under the floor 10 without bow 20, the horizontal connecting face 29 of each air deflection rake 23 being connected directly to the floor 10.
- the discrete faired elements are mounted in front of the engine bogie 2 so as to reduce its aerodynamic impact on the overall behavior of the engine 1.
- the faired elements are mounted so as to deflect any flow of air towards the bogie 2.
- the orthogonal projection of the discrete faired elements, in a plane transverse to the longitudinal direction of movement of the vehicle has a global contour almost uninterrupted and preferably uninterrupted.
- the term "near-uninterrupted overall contour” is understood to mean that the contour of each of the discrete faired elements is distant from the contours of the other elements careened by a small distance, preferably less than 10 cm.
- the motor bogie 2 is globally protected by a plurality of local discrete elements, the discrete elements being offset laterally and longitudinally with respect to the longitudinal direction of movement of the vehicle.
- the discrete faired elements are distant from each other and disjoint, they are distributed so as to form an uninterrupted overall contour vis-à-vis the flow of air flowing from front to rear.
- the overall contour of the discrete faired elements is the same as that of a global ducted element vis-à-vis the air flow, the discrete faired elements having the advantage of allowing maintenance operations because of their spacing. Thanks to this discreet protection, the noises generated by the movement of the vehicle are attenuated and the aerodynamic behavior of the vehicle is improved.
- the invention has been described for a railway vehicle of the TGV® train type, but it goes without saying that the invention applies to any type of railway vehicle, such as for example, an AGV® type train for high speed railcar comprising an entirely articulated train or a train of the ICE3® type comprising a self-propelled train with distributed motorization.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Body Structure For Vehicles (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1052375A FR2958247B1 (en) | 2010-03-31 | 2010-03-31 | RAILWAY VEHICLE WITH A BOGIE COMPRISING DISCRETE CARENED ELEMENTS AGENCIES FOR IMPROVING THE AERODYNAMIC BEHAVIOR OF THE SAID BOGIE |
PCT/EP2011/054233 WO2011120834A1 (en) | 2010-03-31 | 2011-03-21 | Rail vehicle with a bogie comprising discrete streamlined elements designed to improve the aerodynamic performance of said bogie |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2552760A1 true EP2552760A1 (en) | 2013-02-06 |
Family
ID=43066951
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP11709134A Withdrawn EP2552760A1 (en) | 2010-03-31 | 2011-03-21 | Rail vehicle with a bogie comprising discrete streamlined elements designed to improve the aerodynamic performance of said bogie |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP2552760A1 (en) |
AR (1) | AR080424A1 (en) |
FR (1) | FR2958247B1 (en) |
MA (1) | MA34148B1 (en) |
WO (1) | WO2011120834A1 (en) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2992278B1 (en) * | 2012-06-22 | 2015-01-02 | Sncf | BODY STRUCTURE OF RAILWAY VEHICLE WITH IMPROVED AIR FLOW UNDERBOARD |
CN103802848B (en) * | 2012-11-08 | 2016-12-21 | 中车青岛四方机车车辆股份有限公司 | The hood structure of bullet train headstock and installation method |
DE102016202493A1 (en) * | 2016-02-18 | 2017-08-24 | Siemens Aktiengesellschaft | vehicle |
FR3053652B1 (en) * | 2016-07-07 | 2018-07-06 | Sncf Mobilites | RAIL TRANSPORT VEHICLE EQUIPPED WITH AIR CURTAINS |
FR3057525B1 (en) * | 2016-10-14 | 2018-12-07 | Alstom Transport Technologies | RAILWAY VEHICLE WITH COOLING TOWER |
FR3057531B1 (en) * | 2016-10-18 | 2019-06-28 | Alstom Transport Technologies | PILOT CAR OF RAILWAY VEHICLE, PARTICULARLY OF HIGH-SPEED RAILWAY VEHICLE, WITH REDUCED AERODYNAMIC TRAINING |
FR3065427B1 (en) * | 2017-04-21 | 2019-04-26 | Sncf Mobilites | ROLLER BAR FOR BOGIE CARRIER OF A RAIL VEHICLE, BOGIE CARRIER EQUIPPED WITH SUCH ANTIROULIS BAR, AND RAIL TRANSPORT VEHICLE COMPRISING SUCH BOGIES CARRIERS |
GB2577528B (en) * | 2018-09-27 | 2020-11-11 | Hitachi Ltd | A railway vehicle leading car deflector and nose bottom cover |
CN109968993A (en) * | 2018-12-04 | 2019-07-05 | 中车青岛四方机车车辆股份有限公司 | Bottom guiding device, magnetic-levitation train, bottom guiding device control method and device |
CN109747676B (en) * | 2019-02-27 | 2020-01-31 | 中车青岛四方车辆研究所有限公司 | Railway vehicle bogie with eddy current braking device and railway vehicle |
CN110360260B (en) * | 2019-06-20 | 2021-08-31 | 中车青岛四方机车车辆股份有限公司 | Active control anti-snake-shaped shock absorber, shock absorption system and vehicle |
JP7389325B2 (en) * | 2019-09-12 | 2023-11-30 | 日本製鉄株式会社 | Railway vehicles and trains |
FR3124471B1 (en) | 2021-06-23 | 2023-05-19 | SNCF Voyageurs | RAIL TRANSPORT VEHICLE MOTOR EQUIPPED WITH AN AIR DISCHARGE FAIRING |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5209166A (en) * | 1989-12-05 | 1993-05-11 | Trinity Industries, Inc. | Aerodynamic self cleaning hopper car |
FR2675760A1 (en) * | 1991-04-26 | 1992-10-30 | Sardou Max | Stem for a vehicle capable of moving in a fluid, such as air, at a relatively small distance from the ground |
WO2002064412A1 (en) * | 2001-02-09 | 2002-08-22 | Bombardier Transportation Gmbh | Vehicle front-end |
DE102009006562A1 (en) * | 2009-01-27 | 2010-08-12 | Siemens Aktiengesellschaft | Cladding for a bogie of a rail vehicle and rail vehicle with a clad bogie |
-
2010
- 2010-03-31 FR FR1052375A patent/FR2958247B1/en active Active
-
2011
- 2011-03-21 MA MA35292A patent/MA34148B1/en unknown
- 2011-03-21 WO PCT/EP2011/054233 patent/WO2011120834A1/en active Application Filing
- 2011-03-21 EP EP11709134A patent/EP2552760A1/en not_active Withdrawn
- 2011-03-30 AR ARP110101054A patent/AR080424A1/en unknown
Non-Patent Citations (2)
Title |
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None * |
See also references of WO2011120834A1 * |
Also Published As
Publication number | Publication date |
---|---|
MA34148B1 (en) | 2013-04-03 |
WO2011120834A1 (en) | 2011-10-06 |
FR2958247B1 (en) | 2012-05-11 |
FR2958247A1 (en) | 2011-10-07 |
AR080424A1 (en) | 2012-04-04 |
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