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

Definitions

• the invention relates to a track-guided vehicle for passenger transport, comprising at least one vehicle head, preferably two vehicle heads.
• a track-guided vehicle for passenger transport comprising at least one vehicle head, preferably two vehicle heads.
• the at least one vehicle head has a front surface with a front curvature and at least one, preferably circumferential, flow separation edge.
• the flow separation edge is designed in such a way that a clean separation of the surrounding air is ensured in the trailing vehicle head, thereby achieving lower air resistance at the trailing vehicle head.
• the susceptibility to crosswinds is reduced due to the frontal curvature of the front surface.
• a track-guided vehicle is thus provided with a vehicle head that is optimized for both forward and backward operation, or in other words, for both forward and reverse travel.
• the front surface is a single front surface per vehicle head.
• the aim is to design the shape of the front of such a track-guided vehicle in such a way that, at the given speed profile, it performs just as well aerodynamically as the front of the vehicle as it does as the rear of the vehicle.
• the stall edge is formed by providing a pronounced, sharp edge radius. Such edge radii have not previously been used to specifically create a stall edge on the front surface of a vehicle's nose.
• the inventors have recognized that in this way, low driving resistance with low negative pressures at the rear of the vehicle can be achieved without seriously worsening the same at the front of the vehicle.
• the front curvature of the front surface has a curve radius of 1 m to 4 m, preferably of 1.5 m to 3.5 m, in particular 2 m to 3 m.
• the front surface has a cylindrical front curvature, which preferably has a substantially constant front curvature along the front surface.
• the front surface is curved around a single axis.
• a frontal surface with a tilt angle allows for low aerodynamic drag, especially at the leading edge.
• the angle of inclination of the front surface is between 20° and 40°, preferably between 25° and 35°, especially between 30°. Within this range, low air resistance is achieved, while at the same time, little interior volume is lost, so that the inclined front surface does not negatively affect the capacity of the track-guided vehicle.
• Conventional vehicles with an aerodynamically optimized front end typically have areas that are not intended for the passenger or driver and serve solely to improve aerodynamics. However, this resulted in a portion of the overall vehicle length being lost and left unused for the interior.
• the invention reduces this unused portion while simultaneously providing an aerodynamically optimized front end.
• the at least one vehicle head has at least one first underfloor area extending below the front surface, which has an aerodynamically adapted buffer cladding.
• the track-guided vehicle has a maximum speed of 160 km/h, preferably 180 km/h, and is preferably a rail vehicle, furthermore preferably an S-Bru, a commuter train or a regional train.
• the front surface forms more than 50%, preferably more than 65%, further preferably more than 75% of a front surface of the at least one vehicle head.
• the track-guided vehicle 1 has a maximum speed of less than 160 km/h and is preferably a rail vehicle, furthermore preferably an S-Bru, a commuter train or a regional train.
• the at least one vehicle head 10 has a front surface 100 with a front curvature Fw and at least one flow separation edge SK, DK, UK.
• the flow separation edge SK, DK, UK is preferably designed to be circumferential.
• the front surface 100 has an inclination angle ⁇ which is best Fig.5 can be seen.
• the flow separation edge SK, DK, UK of the front surface 100 has a roof edge DK that delimits the front surface 100 from a roof wall 300.
• the flow separation edge SK, DK, UK of the front surface 100 has a lower edge UK which delimits the front surface 100 to an underfloor 400, 32.
• the radius of curvature of the roof edge DK is preferably smaller than the radius of curvature of the lower edges UK.
• the track-guided vehicle has a vehicle length in the vehicle longitudinal direction L of 150 to 250 m, preferably 175 to 225 m, further preferably 190 m to 210 m, in particular 195 m to 205 m.
• Fig. 2 shows a schematic perspective view of the track-guided vehicle 1 according to the invention according to Fig. 1 .
• the at least one vehicle head 10 has at least one first underfloor region 400 extending below the front surface 100, which has an aerodynamically adapted buffer cladding 410.
• the vehicle 1 has a central fuselage section 30 and a transition region 20, which is arranged in the vehicle longitudinal direction L between the vehicle head 10 and the central fuselage section 30. Part of the vehicle head length and the transition region 20 can overlap.
• the transition area 20 has a roof area 34 which slopes down from the central fuselage section 30 towards the vehicle head 10.
• the transition area 20 has a side area 36 which extends from the central fuselage section 30 to the vehicle head 10 (see also Fig. 4 ).
• the transition region 30 has a second underfloor region 32 which is arranged below the side region 36, wherein the second underfloor region 32 has a constricted region 33 which extends from the central fuselage section 30 to the vehicle head 10, opposite the overlying side region 36.
• the front surface 100 forms more than 50%, preferably more than 65%, further preferably more than 75% of an end surface A of the at least one vehicle head 10.
• Fig. 3 shows a schematic perspective view of the track-guided vehicle 1 according to the invention according to Fig. 1 and 2 .
• the front surface 100 comprises a windscreen 110, at least one headlight 120, a destination display 130, at least one cladding element 140, at least one panel 150 and/or at least one air opening 160.
• Fig. 4 shows a schematic plan view of the track-guided vehicle 1 according to the invention according to Fig. 1 to 3 .
• the side region 36 tapers inwards from the central fuselage section 30 towards the vehicle head 10 to a vehicle center axis M.
• the second underfloor area 32 has a constricted area 33 which, compared to the overlying side area 36, tapers inwards from the central fuselage section 30 to the vehicle head 10, to a vehicle center axis M.
• the Fig. 4 marked front curvature Fw of the front surface 100 has a curve radius R F of 1m to 4m, preferably of 1.5m to 3.5m, in particular 2m to 3m.
• Fig. 5 a schematic side view of the track-guided vehicle according to the invention according to Fig. 1 and 4 .
• the front surface 100 has an inclination angle ⁇ .
• the inclination angle ⁇ best Fig.5 to be recognized, preferably has an angle of 20° to 40°, further preferably of 25° to 35°, in particular of 30°.
• the above disclosure applies equally to a rail-guided vehicle for passenger transport, in particular a rail vehicle, as well as to a vehicle head for such a vehicle.
• the above disclosure may also refer to an individual car body of a rail-guided vehicle if it has a vehicle head.

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Citations (4)

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• 2024
  • 2024-02-09 DE DE102024201176.2A patent/DE102024201176A1/de active Pending
  • 2024-12-16 EP EP24220083.0A patent/EP4600108A1/fr active Pending

Patent Citations (4)

Non-Patent Citations (1)

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