Locomotive

Abstract

The invention relates to a locomotive, comprising at least one laterally arranged air-guiding element, the air-guiding element having a flow channel on the inner side, the flow channel terminating on the outer surface of the air-guiding element in an opening serving as an air outlet, and the air-guiding element having at least one air outlet. The flow channel is or can be connected in a fluid-conducting manner to an air inlet which is formed or arranged at a distance from the air-conducting element.

Description

Technical Field

[0001] The invention relates to a scooter (Kraftrad), in particular to a motorcycle. Background Art

[0002] Aerodynamically effective profile devices for motorcycles are known from the prior art. Thus, for example, DE 102019 105 755 A1 discloses such a profile device, in particular for tilting vehicles, which has at least one aerodynamically effective profile body arranged on the load-bearing structure of the vehicle, which is flowed around by the ambient air when the vehicle is in motion. Such laterally arranged wings in motorcycles are also referred to as "winglets". It has been found that when driving on a bend, negative aerodynamic forces are generated on the inner wing profile part due to the tilted position, which forces push the motorcycle out of the bend in the direction of the centrifugal force, which can have a negative impact on driving maneuverability. Summary of the invention

[0003] It is therefore an object of the present invention to provide a locomotive which operates in an aerodynamically optimized manner even when travelling on bends or in an inclined position.

[0004] This object is achieved by a locomotive according to claim 1. Further advantages and features emerge from the dependent claims as well as from the description and the drawings.

[0005] According to the present invention, the motorcycle comprises at least one laterally arranged air guiding element, wherein the air guiding element has a flow channel located on the inside, the flow channel terminates in an opening used as an air outlet on the outer surface of the air guiding element, and the flow channel is connected or can be connected to an air inlet in a fluid-guiding manner, and the air inlet is constructed or arranged at a distance from the air guiding element. Such air guiding elements arranged laterally on the motorcycle are also called "winglets" (small winglets). In the case of conventional winglets, unfavorable aerodynamic forces may occur when (motorcycle / motorcycle) is driving on a curve or in a tilted state, which pulls or presses the motorcycle out of the curve in the direction of the centrifugal force, which can have an adverse effect on driving maneuverability. Therefore, the purpose is to temporarily or as much as possible eliminate the influence of the air guiding element located on the inside. For this purpose, the following situation is utilized here, that is, the pressure on the inside of the motorcycle is higher than the pressure on the outside when driving on a curve. In particular, an overpressure is generated, for example, on the road side, i.e. on the inside, for example on the front edge of the baffle (if any), which can cause a flow from the air inlet via the flow channel located on the inside to the air outlet. Thus, a separation of the flow on the wing located on the inside can be achieved. As a result, the effect of the air-guiding element located on the inside is interrupted, or the aforementioned negative effects do not occur. If the pressure drop described above does not exist, the air-guiding element will not be traversed, or will be traversed only to a negligible extent, and the air-guiding element can function normally, for example when driving in a straight line.

[0006] Advantageously, the respective inlet opening is arranged or designed in such a way that a stagnation pressure is not generated or exists, which could lead to a continuous flow through the air guiding element.

[0007] According to a preferred embodiment, the vehicle has at least one laterally arranged air guiding element, which is designed to allow air to flow through. Vehicles of the type mentioned here are in particular scooters, in particular motorcycles, but also tilting vehicles, such as LNM-type vehicles (LNM-tilting multi-wheel vehicles).

[0008] As already mentioned, the air guiding element is advantageously designed as a wing or winglet. In principle, such an air guiding element is mainly used to generate downforce. Preferably, the air guiding element extends at an angle so that the air guiding element generates the maximum downforce in a certain inclined position. When viewed from the front in the direction of travel, the air guiding element is preferably slightly inclined downward.

[0009] Preferably, the air inlets are each arranged on the same side of the locomotive of the air guide element to which the air inlet is fluidically connected. Thus, it is possible to utilize the higher pressure present on the inside in the tilted position to form a pressure difference, which causes air to be discharged on the air guide element located on the inside.

[0010] Typically, the air guiding element has an upper side and a lower side. Preferably, the at least one opening as an air outlet is configured on the lower side. As a result, the desired flow separation can be effectively achieved. However, alternatively or additionally, one or more such openings can also be provided on the upper side.

[0011] Preferably, the at least one opening is arranged in the front region of the air guiding element. The expression "in the front region" here relates to the direction of travel. Thus, the earliest possible separation of the air flow can be achieved and the aerodynamic forces of the air guiding element located on the inside can thus be eliminated.

[0012] According to one embodiment, the air guiding element has a longitudinal extension direction, wherein a plurality of openings are configured along and / or transversely to the longitudinal extension direction. If necessary, multiple rows of openings can be configured, wherein the openings can also be configured in different sizes. The optimized geometry and shape and / or size of these openings are preferably obtained in simulations. According to a preferred embodiment, the one or more openings are configured to be round, in particular circular, or to be configured to be slit-shaped, polygonal or similar.

[0013] According to one embodiment, the locomotive comprises an outer flow channel, which ends in at least one opening serving as an air inlet. The outer flow channel is connected to the inner flow channel in a fluid-conducting manner. The inner flow channel is connected to the air inlet via the outer flow channel.

[0014] The air inlet is formed, for example, on a fascia of the vehicle. As already mentioned, the air inlet is advantageously arranged at a distance from the air outlet formed in the air guide element. This allows the air inlet to be optimally positioned at a point in the inclined position where the pressure is as high as possible. This allows a pressure drop to be achieved which allows the air guide element to be flowed through and thus causes a separation of the annular flow.

[0015] According to a preferred embodiment, the air inlet is arranged below the respective air guiding element, as viewed along the height axis. It has been found that a flow separation on the inner wing can be achieved particularly effectively in this way.

[0016] Other advantages and features emerge from the following description of the locomotive in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In the figure:

[0018] Figure 1 showing a front view of one embodiment of a locomotive in a tilted position;

[0019] Figure 2Show Figure 1 The simplified cross-sectional view AA is shown in FIG.

[0020] Figure 3 Show Figure 1 The simplified cross-sectional view BB is shown in FIG. DETAILED DESCRIPTION

[0021] Figure 1 A schematic diagram of a locomotive 1 in an inclined position is shown. The locomotive extends along a height axis H, wherein the height axis H is accordingly inclined to the right. The driver is not shown here. The reference numeral F indicates the direction of travel, which here is directly outward from the plane of the drawing. It can be seen that air guide elements 10 are respectively constructed on both sides of the height axis or center axis H of the locomotive 1. The slightly downwardly inclined air guide elements 10 extend respectively along the longitudinal extension direction L. Two air inlets 32 are simplified in the fender 2 of the locomotive 1, wherein it is schematically shown that a flow S is formed in the direction of the air inlet 32 ​​located on the inside towards the air guide element 10 located on the inside. The flow S flows into the corresponding air guide element 10, for example, along the flow channel 30 located on the outside, for which purpose, in particular, see the sectional views AA and BB.

[0022] Figure 2 Shown as Figure 1 It can be seen that the cross-sectional view of the air guiding element 10 constructed as a wing or winglet has a flow channel 20 located on the inside along its longitudinal extension direction L, which ends at an opening or air outlet 22, which can also be seen in the relevant content. Figure 3 The air guiding element 10 has an outer surface 12, wherein the outer surface comprises an upper side 14 and a lower side 16. The opening 22 is preferably formed on the lower side 16 and is formed on the air guiding element 10 further forward with respect to the driving direction F. In the inclined position, a pressure increase occurs on the inside, which is used to separate the flow on the inner wing or the inner air guiding element 10. For this purpose, the pressure drop is used to cause a flow from the air inlet 32 ​​to the air outlet 22, wherein the air outlet 22 on the air guiding element 10 enables the flow to separate at the air guiding element. This thus (temporarily) loses its aerodynamic effect and eliminates the aerodynamic forces that act disadvantageously in the inclined position and cause the motorcycle to be pulled or pressed out of the bend in the direction of the centrifugal force. A great advantage is that the above-mentioned effect does not occur when there is no such pressure drop, for example, at the air guiding element outside the bend or when driving in a straight line. However, it should be noted that the air inlet is advantageously not arranged in such a way that a stagnation pressure is generated which could lead to a continuous flow through the air guiding element.

[0023] Reference numerals list

[0024] 1 Locomotive

[0025] 2 Baffle

[0026] 10 Air guide element

[0027] 12 External surface

[0028] 14 upper side

[0029] 16 Lower side

[0030] 20 Flow channel located inside

[0031] 22 Air outlet

[0032] 30 Flow channel located outside

[0033] 32 Air Inlet

[0034] S Flow (direction)

[0035] L longitudinal extension direction

[0036] H height axis, center axis

[0037] F Driving direction

Claims

1. A locomotive (1) comprising at least one laterally arranged air guiding element (10), wherein: The air guiding element (10) has an inner flow channel (20), which ends on the outer surface (12) of the air guiding element (10) in an opening serving as an air outlet (22), and the flow channel (20) is connected or connectable in a fluid-guiding manner to an air inlet (32), which is constructed or arranged at a distance from the air guiding element (10).

2. The locomotive (1) according to claim 1, wherein: The locomotives (1) each have at least one laterally arranged air guiding element in the lateral direction.

3. The locomotive (1) according to claim 1 or 2, wherein: The air guiding element (10) is designed as a wing.

4. A locomotive (1) according to any one of the preceding claims, wherein: The air inlets (32) are each arranged on the same side of an air guiding element (10) of the motor vehicle (1) to which the air inlets are fluidically connected.

5. A locomotive (1) according to any one of the preceding claims, wherein: The air guiding element (10) has an upper side (14) and an underside (16), and the at least one opening is formed on the underside (16).

6. A locomotive (1) according to any one of the preceding claims, wherein: The at least one opening is arranged in a front region of the air guiding element (10).

7. A locomotive (1) according to any one of the preceding claims, wherein: The air guiding element (10) has a longitudinal extension direction (L) and is provided with a plurality of openings along and / or transversely to the longitudinal extension direction (L).

8. The locomotive (1) according to any of the preceding claims, comprising an outer-located flow channel (30) terminating in at least one opening serving as an air inlet (32).

9. A locomotive (1) according to any one of the preceding claims, wherein: The air inlet (32) is formed in the fender (2) of the locomotive (1).

10. A locomotive (1) according to any one of the preceding claims, wherein: The air inlet (32) is arranged below the respective air guiding element (10) as viewed along the height axis (H).

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