Rail vehicle carriage comprising a carriage roof with a flat roof region and a raised region

Abstract

The invention relates to a rail vehicle carriage (100) comprising a carriage body having side walls and a carriage roof (111) connecting the side walls and with a flat roof region (151). An interior ceiling (121) is spaced apart from the carriage roof (111) and borders an installation space (153) between the carriage roof (111) and the interior ceiling (121). The carriage roof (111) comprises a raised section (112) in the carriage roof (111), which defines a raised region (152) of the carriage roof (111) and locally widens the installation space (153) between the carriage roof (111) and the interior ceiling (121), wherein an inner component (145) is accommodated in the raised region (152) in the installation space (153).

Description

TECHNICAL FIELD

[0001] The invention lies in the field of rail vehicle technology and relates to a rail vehicle carriage for local, regional and long-distance passenger transport with a carriage roof with a flat roof area and a raised area. TECHNICAL BACKGROUND

[0002] Modern rail vehicles, especially those with a high proportion of low-floor vehicles, carry a large portion of their traction equipment on the roof. Due to the limited space available below the low-floor area, there is little room for traction equipment. Due to the need to optimize the interior space for passengers and maximize the number of seats, there is also only limited space available for technical equipment within the rail vehicle. Some of this technical equipment is therefore housed above the interior ceiling and between the interior ceiling and the actual vehicle roof.

[0003] For aesthetic and aerodynamic reasons, the roof of a rail vehicle should be as uniform as possible over the entire length of the vehicle. However, some of the technical equipment components are bulky and require more space. In order to accommodate these components on the roof, so-called roof trays are often provided for locally lowering the roof, creating additional space. However, roof trays require drainage to allow rainwater to drain away. Furthermore, dirt can easily accumulate in a roof tray, so it must be cleaned regularly. Furthermore, components housed in roof trays are more exposed to corrosion due to the increased humidity there.

[0004] Rail vehicles with local roof troughs are described in the publications US 2014 / 0 250 800 A1, EP 1 006 034 B1, and EP 1 839 989 B1. In contrast, the publications DE 600 06 864 T2 and EP 1 566 322 B1 describe rail vehicles with a roof with areas of different heights.

[0005] From EP 3 450 277 A1 and EP 3 369 637 A1, traction vehicles are known with an installation space between the car roof and the interior ceiling in which vehicle components are housed.

[0006] Against this background, there is a fundamental need for an improved solution to accommodate the necessary equipment components in a space-saving manner. INVENTIVE SOLUTION

[0007] This object is achieved by a rail vehicle according to claim 1. Further embodiments, configurations and advantages emerge from the dependent claims and the following description.

[0008] According to one embodiment, a rail vehicle comprises a car body with side walls and a car roof connecting the side walls with a flat roof area, as well as an interior ceiling spaced from the car roof and defining an installation space between the car roof and the interior ceiling. A raised portion is provided in the car roof, defining a raised portion of the car roof and locally expanding the installation space between the car roof and the interior ceiling. An interior component is accommodated, for example partially or completely, in the installation space within the raised portion.

[0009] In contrast to local roof troughs, which locally reduce the height of the car roof, the proposal here is to lower the car roof overall. This means that the flat roof area has a lower height, allowing larger external components to be mounted on the flat roof area without the need for a roof trough. However, due to the overall lowering of the car roof, the installation space below the car roof is reduced. This installation space is limited at the bottom by the interior ceiling, which cannot be lowered at will. Therefore, there would no longer be sufficient space for larger internal components to be accommodated in the installation space between the interior ceiling and the car roof.

[0010] Therefore, it is proposed to provide a raised section in the vehicle roof to locally raise the vehicle roof. This creates additional space for larger interior components in the installation area. The raised section can essentially be designed as a flat roof area that is spaced a certain distance from the flat roof area. The raised section is thus raised above the flat roof area, i.e., it rises vertically above the flat roof area.

[0011] The installation space in the raised area can have a first area above a lower edge of the flat roof area up to the maximum internal height of the raised area and a second area above the internal ceiling up to the lower edge of the flat roof area. The installation space is therefore vertically extended in the raised area of ​​the vehicle roof compared to the installation space in the flat roof area, i.e. it extends continuously from the internal ceiling up to the maximum internal height of the raised area. The installation space in the raised area can therefore have a greater vertical extent than the installation area outside the raised area, i.e. in the flat roof area. The internal component accommodated in the raised area in the installation space can extend from the second area into the first area. The second area can extend laterally into the flat roof area.

[0012] In previous rail vehicles, the height of the car roof was determined so that all equipment components (interior components) that were to be integrated below the car roof could be installed there without having to lower the interior ceiling. For equipment components on the car roof (exterior components) that require a large amount of vertical space, additional installation space was provided on the car roof by means of the roof trough.

[0013] The solution presented here takes a different approach. The car roof is set somewhat lower overall, ensuring sufficient space for all equipment components that must be mounted on the car roof—i.e., the exterior components. For example, the flat roof area can have a height of between approximately 3450 mm and 3550 mm from the top of the rail, preferably approximately 3500 mm. Only at the points where larger interior components are to be mounted in the installation space between the car roof and the interior ceiling is the car roof locally raised, thus expanding the installation space.

[0014] Instead of a roof tray for a large external component, a raised area for large internal components is provided in the vehicle roof.

[0015] According to one embodiment, which can be suitably combined with further embodiments described herein, the area ratio between the flat roof area and the raised area is greater than 1:1, preferably greater than 6:4, further preferably greater than 7:3, and in particular greater than 3:1 when viewed from the perspective of the vehicle roof. The flat roof area therefore takes up at least 50% of the vehicle roof, and preferably significantly more. Since larger external components can be accommodated in the flat roof area, the solution presented here increases the space for installing larger external components. In previous solutions with a roof trough, the space for installing larger external components was limited to the area of ​​the roof trough, which typically took up significantly less than 50% of the total area of ​​the vehicle roof.

[0016] Therefore, the vehicle roof preferably does not have an inwardly curved roof trough. This eliminates the need for additional drainage and the need for periodic cleaning.

[0017] According to one embodiment, which can be suitably combined with other embodiments described herein, a further interior component is arranged outside the raised area in the installation space between the interior ceiling and the car roof. The installation space can also extend outside the raised area into areas that are only limited at the top by the flat roof area. It is also possible for the installation space between the interior ceiling and the car roof to extend over the entire length of the rail vehicle. Below the flat roof area, with a constant height of the interior ceiling, the installation space is smaller in the vertical direction than in the raised area. Smaller interior components that do not require a lot of vertical space can therefore also be mounted in the installation space below the flat roof area.

[0018] According to one embodiment, which can be suitably combined with further embodiments described herein, the raised portion is spaced from the respective side wall of the car body, viewed in a direction transverse to a longitudinal direction of the rail vehicle carriage. A narrow strip of the flat roof region can then run between the raised portion and the respective side wall, i.e. the flat roof region continues laterally next to the raised portion in the longitudinal direction. Viewed in cross-section transverse to the longitudinal extent of the rail vehicle carriage, the outer contour of the car roof can, starting from the side wall or from a transition between the side wall and car roof, initially run essentially flat and then transition into the raised portion with a step.On the opposite side, the car roof then continues over another step into a flat course up to the opposite side wall or the transition there between the side wall and the car roof.

[0019] If the car roof is considered a roof slab, the car roof is raised within the roof slab and spaced from the lateral edges of the roof slab and thus from the side walls of the rail vehicle. This allows for cost-effective production of the car roof with the raised section.

[0020] Furthermore, by spacing the raised section away from the side wall, the transition area between the side wall and the car roof is not subject to structural changes. This area, in particular, is subject to high mechanical loads. Furthermore, any existing load-bearing structures there are not structurally altered, and these are not locally weakened.

[0021] According to one embodiment, which can be suitably combined with other embodiments described herein, the car body, including the side walls and the car roof, is designed in a self-supporting construction with self-supporting structures or structural elements. The raised portion of the car roof is part of the self-supporting structure of the car roof. The raised portion therefore does not need to be reinforced by other structural elements. Furthermore, an external component located on the raised portion can be supported directly by the raised portion without the need for other supporting structures.

[0022] According to one embodiment, which can be suitably combined with other embodiments described herein, the car body with the side walls and the car roof is designed in a self-supporting construction with self-supporting structures or structural elements. The raised portion of the car roof is not an integral part of the self-supporting structure of the car roof. In this case, the car roof must be structurally designed in such a way that the stability of the car roof is ensured despite the raised portion contributing little or nothing to the stability of the car roof. For example, a suitable support can be provided in the car roof surrounding the raised portion, on which the raised portion is supported and which provides this area with sufficient stability.The support can run below the car roof, in the plane of the car roof, or on the car roof and reinforce an opening in the self-supporting structure of the car roof, on which the elevation is then supported.

[0023] According to one embodiment, which can be suitably combined with other embodiments described herein, the car body is formed integrally with the side walls and the car roof. The self-supporting structures are self-supporting extruded profiles that form parts of the outer skin of the rail vehicle. This allows for efficient implementation of various cross-sectional geometries.

[0024] According to one embodiment, the elevation, viewed in cross-section transverse to the longitudinal direction, is at a distance from the side wall or the transition between the side wall and the vehicle roof of approximately 380 mm to 450 mm, preferably approximately 400 mm to approximately 440 mm, in particular approximately 420 mm. In the regions between the elevation and the side wall or the transition, the vehicle roof is preferably flat, i.e., the flat roof region also extends laterally alongside the elevation.

[0025] According to one embodiment, the elevation has a height relative to the flat roof area of ​​approximately 50 mm to approximately 200 mm, preferably approximately 50 mm to approximately 150 mm, in particular approximately 100 mm, for example, at the heights of the flat roof area above the top edge of the rail specified above, e.g., 3450 mm. The lower the flat roof area, the higher the elevation can be.

[0026] According to one embodiment, which can be suitably combined with other embodiments described herein, a fastening rail is attached to the car roof on both sides of the raised portion, each of which runs in the longitudinal direction of the rail vehicle. The fastening rails, which can be C-rails, for example, serve to attach the exterior component or other equipment. For example, the fastening rails can be integrated into extruded profiles of the car body.

[0027] According to one embodiment, which can be suitably combined with other embodiments described herein, a cable or cables running on the car roof in the longitudinal direction of the rail vehicle car are attached at least on one side adjacent to the raised section, in particular on both sides of the raised section, with the advantage of direct cable routing. These cables are preferably connected directly to the car roof by suitable fastening means and are not routed through a cable duct.

[0028] According to one embodiment, which can be suitably combined with other embodiments described herein, the rail vehicle has an interior floor, a high-floor area, and a low-floor area. In the high-floor area, the interior floor has a height above the top of the rail that is higher than the height of the interior floor in the low-floor area. According to one embodiment, the interior ceiling has a predominantly or entirely uniform height above the top of the rail in both the high-floor area and the low-floor area. The interior ceiling is therefore preferably equipped with a uniform height throughout the rail vehicle. It therefore does not follow the different heights of the floor in the low-floor area and the high-floor area. This is advantageous for the structural design of the interior ceiling. Furthermore, it achieves an attractive appearance of the interior of the rail vehicle.

[0029] The interior floor in the high-floor area can be designed relatively low compared to previous rail vehicles. Fewer components, such as compressed air supply units and traction motor fans, are located below the floor. Extra-flat on-board power supply batteries are located in the low-floor area. Larger components are then integrated either on the vehicle roof or in the installation space.

[0030] According to one embodiment, which can be suitably combined with other embodiments described herein, at least one external component is mounted in the flat roof area on the car roof, which may be a transformer, power converter, traction batteries, or traction cooling system. According to one embodiment, at least two, at least three, or more external components can also be mounted in the flat roof area.

[0031] According to an embodiment, which can be suitably combined with other embodiments described herein, at least one further external component is mounted on the elevation, which may be high-voltage equipment and / or an air conditioning system.

[0032] According to an embodiment, which can be suitably combined with other embodiments described herein, the interior component, which is accommodated in particular in the raised area of ​​the vehicle roof, can be control components, air conditioning air distribution or compressed air components.

[0033] Thanks to the advantageous design of the vehicle roof, significantly more equipment components can be mounted on the vehicle roof or in the installation space below the vehicle roof. In particular, the comparatively large design of the flat roof area, which can be at approximately the same height as the floor of existing roof troughs, provides considerably more installation space for larger external components. Furthermore, internal components that were previously housed in the passenger compartment, for example, behind side panels or in control cabinets, can now be accommodated in the installation area, particularly in the installation space that has been expanded by the elevation. This creates more space for passengers.

[0034] According to an embodiment, which can be suitably combined with other embodiments described herein, the wagon roof comprises at least two flat roof areas, each located at the front ends of the rail vehicle wagon and above running gears (e.g. bogies) of the rail vehicle wagon, and at least one raised area with at least one elevation between the two flat roof areas.

[0035] According to an alternative embodiment, which can be suitably combined with other embodiments described herein, the wagon roof comprises a (single) flat roof area located at one front end of the rail vehicle wagon and above a running gear (e.g. bogie) of the rail vehicle wagon located at this front end, and a (single) raised area with a raised area, which adjoins the flat roof area and extends to the other front end of the rail vehicle wagon.

[0036] The rail vehicle can thus have either a raised section approximately in the middle—relative to the longitudinal extent of the rail vehicle—or a raised section extending to one end of the rail vehicle. This allows rail vehicles to be designed differently depending on their function. For example, in a multiple unit train comprising several rail vehicles, the roof of the leading rail vehicle can be designed differently than, for example, a following rail vehicle. FIGURES

[0037] The invention is explained in more detail below with reference to embodiments, without these being intended to limit the scope of protection defined by the claims.

[0038] The accompanying drawings illustrate embodiments and, together with the description, serve to explain the principles of the invention. The elements of the drawings are relative to one another and are not necessarily to scale. Figure 1 shows an embodiment of a rail vehicle with a flat roof area extending to one front end of the rail vehicle and a raised area extending to the opposite front end of the rail vehicle. Figure 2 shows a further embodiment of a rail vehicle with a raised area approximately in the middle of the rail vehicle. Figure 3 shows a partial cross-section through a rail vehicle according to a further embodiment. Figure 4 shows a partial cross-section through a rail vehicle according to a further embodiment. EXAMPLES OF IMPLEMENTATION

[0039] Figure 1 shows a rail vehicle 100 according to a first embodiment, which can be, for example, a control car of a multiple unit. The rail vehicle 100 comprises a car body supported on two running gears or bogies 101. An interior floor 122 of the rail vehicle 100 comprises a low-floor area 124 between the bogies 101 and a high-floor area 123 above each of the bogies 101. The interior floor 122 in the high-floor area 123 is at a greater distance from the upper edge of the rail 131 than in the low-floor area 124. The high-floor areas 123 can have a height of approximately 1100 mm above the upper edge of the rail. The low-floor area 124, on the other hand, has a height of 600 mm or 800 mm.

[0040] The rail vehicle 100 further comprises a vehicle roof 111 with a flat roof area 151 and a raised area 152. In the embodiment shown here, the flat roof area 151 occupies more than 50% of the total length of the vehicle roof 111 and extends to the leading end of the rail vehicle, i.e., to the power car end. The raised area 152 is defined by a raised area 112 of the vehicle roof 111, which in the present embodiment is located at the other end of the rail vehicle 100.

[0041] An interior ceiling 121 extends below the car roof 111 at a distance from it, which simultaneously forms the roof-side interior lining. In the embodiment shown here, the interior ceiling 121 has a uniform height throughout, both in the two high-floor areas 123 and in the low-floor area 124. An installation space 153 is bounded at the top by the car roof 111 and at the bottom by the interior ceiling 121.

[0042] In Figure 1 132 also indicates the upper edge of the clearance gauge for equipment components. This upper edge is not the upper edge of the entire clearance gauge, but rather the clearance gauge that applies to permanently installed equipment components other than the pantograph.

[0043] Large external components 141 are mounted in the flat roof area 151, which in previous solutions had to be housed, for example, in a roof trough. In contrast, smaller external components 143 and the pantograph 142 are mounted in the raised area 152. The large external components 141 can, in particular, be equipment components required for traction, such as transformers, power converters, traction batteries, and traction cooling systems. The small external components 143 can be equipment components for high voltage or part of the air conditioning system or the entire air conditioning system mounted on the car roof 111.

[0044] A specific configuration of the arrangement of the external components includes, for example, air conditioning systems as external components 143 on the raised portion 112 in the raised portion 152, and power converters, traction cooling systems, and transformers as external components 141 on the flat roof portion 151. Another specific configuration includes the arrangement of traction batteries as external components 141, particularly in battery-powered rail vehicles. Since the flat roof portion 151 is somewhat lower overall compared to the roof height of previous rail vehicles, larger traction batteries can also be mounted on the flat roof portion 151. This allows the production of (fully or partially) battery-powered rail vehicles or multiple units with a longer range when operated under battery power.

[0045] In the installation space 153, smaller interior components 146 are housed below the flat roof area 151, and larger interior components 145 are housed below the raised area 152. The smaller or larger dimensions refer to the vertical dimensions. The larger interior components 145 are, in particular, control components for the rail vehicle, air conditioning distribution systems, and compressed air components, as these require a certain amount of installation space. The smaller interior components 146, on the other hand, can be, for example, air conditioning ducts.

[0046] In Figure 2 another embodiment of a rail vehicle car 200 is shown, which may, for example, be a middle car of a multiple unit.

[0047] In contrast to the Figure 1In the embodiment shown, the rail vehicle carriage 200 has a central raised region 152 as seen in the longitudinal direction of the rail vehicle carriage. Starting from this, two flat roof regions 151 extend to the respective front ends of the rail vehicle carriage 200.

[0048] The arrangement of the flat roof areas 151 at the respective front ends of the rail vehicle 200 has the advantage that not only vertically tall external components 141 but also comparatively wide external components can be mounted there. As is known, the middle area of ​​a rail vehicle between the bogies 101 deflects significantly more when cornering than the end areas of a rail vehicle. Therefore, external components mounted on the vehicle roof 111 must be narrower if they are attached in the longitudinal center of the rail vehicle. Larger external components 141 are therefore preferably mounted in the area above the bogies 101. In particular, the transformer is attached to the vehicle roof 111 above the bogie 101 due to its volume and weight.

[0049] Figure 3shows a partial cross-section through a rail vehicle according to another embodiment. Shown is an upper part of a car body 110, which includes a side wall 114, a bevel 115 in the upper part of the side wall 114, and a transition 116 between the side wall 114 and the car roof 111. In the embodiment shown here, the car body 110 is a self-supporting structure of integral construction, realized by interconnected extruded profiles.

[0050] On the car roof 111, a fastening rail 113, specifically a C-rail, is mounted adjacent to the transition 116 between the side wall 114 and the car roof 111, running in the longitudinal direction of the rail vehicle. Cables 118 are attached to the car roof 111 on both sides between the outer fastening rails 113 and the raised portion 112.

[0051] In the Figure 3In the embodiment shown, the elevation 112 does not form a self-supporting structure of the car body 110. The elevation 112 is therefore supported by the car body 110, specifically by the car roof 111 (roof panel). For this purpose, the car roof 111 can have stiffeners 119 or cross members 119 so that the car roof 111 also has sufficient stability in the area of ​​the opening of the self-supporting car body 110 shown here. The cross member 119 shown here extends in the transverse direction of the rail vehicle and simultaneously serves to hold the interior component 145. Alternatively or additionally, a support surrounding the opening can also be provided.

[0052] The opening formed in the self-supporting structure of the car body 110 is covered by the raised portion 112. In the embodiment shown here, the raised portion 112 is in the form of a hood. The outer contour of the car roof 111 therefore has a step that is laterally spaced from the transition 116 between the car roof 111 and the side wall 114. The flat roof area 151 continues in this lateral area. The fastening rails 113 and the cables 118 are attached to the flat roof area 151.

[0053] Since the elevation 112 is spaced from the side wall 114 or from the transition 116 between the side wall 114 and the car roof 111, the transition 116 is not weakened by the opening formed in the car roof 111.

[0054] The installation space 153 located above the interior ceiling 121 comprises a first area 154 and a second area 155 in the raised area 152 of the car roof 111. In Figure 3The vertical extent of these areas is indicated. The second area 155 extends above the interior ceiling to the lower edge of the flat roof area 151. In the transverse direction, the second area 155 extends across the entire width of the rail vehicle. The first area 154, on the other hand, extends above the lower edge of the flat roof area 151 to the maximum interior height of the elevation 112.

[0055] Not shown is a cross-section through a rail vehicle carriage that runs exclusively through a flat roof area 151. Below the areas of the carriage roof 111 that exclusively contain a flat roof area 151, only the second area 155 of the installation space 153 extends.

[0056] The first area 154 locally enlarges the installation space 153 in the vertical direction. Therefore, there is more space in this area for comparatively large internal components 145, such as Figure 3Such an internal component 145 can extend from the second region 155 into the first region 154. Alternatively, it is possible for the internal component 145 to be accommodated solely or predominantly in the first region 154.

[0057] The increase 112 is in the Figure 3 shown embodiment is so high that only little space remains for an external component below the upper edge 132 of the clearance profile.

[0058] Figure 4 shows a partial cross-section through a rail vehicle of another embodiment. The essential difference to Figure 3 is that here the elevation 112 is an integral part of the car body 110 and is therefore to be regarded as a load-bearing structure of the car body 110. In this case, bracing is not required. However, even in Figure 4A cross member 119 is provided, which is connected to the vehicle roof 111 in order to fasten the interior component 145 to the vehicle roof 111 in the installation space 153. Here, too, the interior component 145 extends from the second area 155 of the installation space 153 into the first area 154 of the installation space 153.

[0059] The increase 112 shows in the Figure 4 shown embodiment has a slightly lower height than the elevation 112 in Figure 3 . Therefore, space remains for the assembly of an external component 143, which is mounted on the elevation 112.

[0060] In this embodiment, the elevation 112 also forms a step with the adjacent flat roof area 151, so that the elevation 112 is also formed within the roof panel.

[0061] Although specific embodiments have been shown and described herein, it is within the scope of the present invention to appropriately modify the illustrated embodiments without departing from the scope of the present invention as defined by the appended claims. LIST OF REFERENCE SYMBOLS

[0062] 100, 200Rail Vehicle 101Running Frame / Bogie 110Car Body 111Car Roof 112Elevation 113C-Rail / Fastening Rail 114Side Wall 115Bevel 116Side Wall / Car Roof Transition 118Cable 119Bracing / Crossbeam 121Interior Ceiling / Interior Paneling 122Interior Floor 123High-Floor Area 124Low-Floor Area 131Rail 132Top Edge of the Clearance Profile for Equipment Components 141Large External Component 142Pantograph 143Small External Component 145Large Internal Component 146Small Internal Component 151Flat Roof Area 152Elevation Area 153Installation Space 154First Area of ​​the Installation Space 155Second Area of ​​the Installation Space

Claims

1. Rail vehicle car, comprising: a car body (110) with side walls (114) and a car roof (111) connecting the side walls and having a flat roof area (151); an interior ceiling (121) which is spaced from the car roof (111) and delimits an installation space (153) between the car roof (111) and the interior ceiling (121); a raising (112) in the car roof (111), which defines a raised area (152) of the car roof (111) and locally extends the installation space (153) between the car roof (111) and the interior ceiling (121); an interior component (145) accommodated in the raised area (152) in the installation space (153).

2. Rail vehicle car according to claim 1, further comprising a further interior component (146) which is arranged outside the raised area (152) in the installation space (153) between the interior ceiling (121) and the car roof (111).

3. A rail vehicle car according to claim 1 or 2, wherein the raising (112), as seen in a direction transverse to a longitudinal direction of the rail vehicle car, is spaced from the respective side wall (114) of the car body (100).

4. Rail vehicle car according to one of the preceding claims, wherein at least one fastening rail (113) is fastened on or to the car roof (111) on both sides adjacent to the raising (112), for example as an integral part of the car roof (111), wherein the respective fastening rail (113) extends in the longitudinal direction of the rail vehicle car.

5. Rail vehicle car according to one of the preceding claims, wherein at least on one side adjacent to the raising (112), in particular on both sides of the raising (112), a cable (118) extending on the car roof (111) in the longitudinal direction of the rail vehicle car is fastened.

6. Rail vehicle car according to one of the preceding claims, wherein the rail vehicle car comprises an interior floor (122), a high-floor area (123) and a low-floor area (124), and the interior floor (122) in the high-floor area (123) has a height above the top of rail which is higher than the height of the interior floor (122) in the low-floor area (124).

7. Rail vehicle car according to claim 6, wherein the interior ceiling (121) has a uniform height above the top of rail, predominantly or entirely, both in the high-floor area (123) and in the low-floor area (124).

8. Rail vehicle car according to one of the preceding claims, wherein the car roof (111) does not have an inwardly curved roof pan.

9. Rail vehicle car according to one of the preceding claims, wherein at least one external component (141) is mounted in the flat roof area (151) on the car roof (111), wherein the external component (141) is selected from a transformer, a power converter, traction batteries and a traction cooling system.

10. Rail vehicle car according to one of the preceding claims, wherein at least one further external component (142, 143) is mounted on the raising (112), wherein the further external component (142, 143) is selected from high-voltage equipment and air conditioning.

11. Rail vehicle car according to one of the preceding claims, wherein the internal component (145) is selected from control components, air conditioning distribution components, compressed air components.

12. Rail vehicle car according to one of the preceding claims, wherein the car roof (111) has at least two flat roof areas (151), which are located respectively at the front ends of the rail vehicle car and above running gears (101) of the rail vehicle car, and at least one raised area (152) with at least one raising (112) between the two flat roof areas (151).

13. Rail vehicle car according to one of claims 1 to 11, wherein the car roof (111) has a flat roof area (151) which is located at one front end of the rail vehicle car and above a running gear (101) of the rail vehicle car located at this front end, and a raised area (152) with a raising (112) which adjoins the flat roof area (151) and extends to the other front end of the rail vehicle car.

14. Rail vehicle car according to one of the preceding claims, wherein the car body (110) with the side walls (114) and the car roof (111) is designed in a self-supporting manner with self-supporting structures, and the raising (112) of the car roof (111) is part of the self-supporting structure of the car roof (111).

15. Rail vehicle car according to one of claims 1 to 13, wherein the car body (110) with the side walls (114) and the car roof (111) is designed in a self-supporting construction with self-supporting structures and the raising (112) of the car roof (111) is not part of the self-supporting structure of the car roof (111).

16. Rail vehicle car according to claim 13 or 14, wherein the car body (110) with the side walls (114) and the car roof (111) is of integral construction and the self-supporting structures are self-supporting extruded profiles which form parts of the outer skin of the rail vehicle car.

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