DE102019120556A1 - Method for simulating cornering and / or accelerations and simulator device - Google Patents

Abstract

According to the invention, the technology disclosed here relates to a method for simulating cornering and / or acceleration of a motor vehicle with an operating medium container (30) by means of a simulator device (10), the method comprising the following steps: arranging the operating medium container (30) with a conveying opening (40) on a surface (27); Determining an angle of inclination of the surface (27) at which the gravitational force (50) at least partially corresponds to the forces occurring during a predetermined cornering and / or with a predetermined acceleration; Inclination of the surface (27) by the determined angle of inclination to simulate cornering and / or acceleration of the operating medium container (30); and checking whether the operating medium (35) can be conveyed out of the operating medium container (30) through the conveying opening (40) of the operating medium container (30) while the surface (27) is inclined by the determined angle of inclination.

Description

The technology disclosed here relates to a method for simulating cornering and / or accelerations of a motor vehicle and a simulator device.

Longitudinal and lateral accelerations of a motor vehicle shift the liquid position or the position of an operating medium in an operating medium container, e.g. the fuel tank, of the vehicle according to the forces acting on the operating medium container. Depending on the construction of the operating medium container and the liquid level or the level of the operating medium, situations can arise in which the suction point or pump-out point or delivery opening in the operating medium container is no longer supplied with liquid.

This can result in an undersupply of the consuming units (eg the high-pressure pump fuel supply). For this purpose, combined acceleration processes that last longer (for example longer than approx. 5 seconds), for example when driving onto a federal motorway, when driving in a hairpin bend or the like, are particularly relevant. Accelerations between approx. 0.6 g - 0.8 g = approx. 5.9 m / s ² - 7.9 m / s ² can occur here. In extreme situations, lateral acceleration of up to approx. 1.4 g can occur.

So far, these driving situations in the vehicle have been safeguarded by displaying the critical driving situations, i.e. the vehicle with the operating fluid container is brought into a corresponding acceleration situation.

It is a preferred object of the technology disclosed here to reduce or eliminate at least one disadvantage of a previously known solution or to propose an alternative solution. In particular, it is a preferred object of the technology disclosed here to show a method or a simulator device by means of which accelerations of the operating medium container can be simulated in a technically simple manner. Further preferred objects can result from the advantageous effects of the technology disclosed here. The object (s) is / are achieved by the subject matter of claim 1 or claim 6 of the independent claims. The dependent claims represent preferred configurations.

In particular, the object is achieved by a method for simulating cornering and / or acceleration of a motor vehicle with an operating medium container by means of a simulator device, the method comprising the following steps: arranging the operating medium container with a conveying opening on a surface; Determining an angle of inclination of the surface at which the gravitational force at least partially corresponds to the forces occurring during a given cornering and / or given a given acceleration; Inclination of the surface by the determined angle of inclination to simulate cornering and / or acceleration of the operating medium container; and checking whether the operating medium can be conveyed out of the operating medium container through the conveying opening of the operating medium container while the surface is inclined by the determined inclination angle.

One advantage of this is that accelerations or cornering of the motor vehicle and the forces that occur on the operating medium in the operating medium container during accelerations or cornering can be simulated in a technically simple manner. As a result, different types of equipment container can be checked or investigated in a short time and with little effort to determine whether the equipment can continue to be conveyed through the delivery opening of the operating medium container during acceleration or cornering during acceleration or cornering, or whether the delivery opening can be conveyed during certain Accelerations or cornering no longer covers the conveyor opening. This can also be examined depending on the liquid level or the level of the operating medium in the operating medium container. This saves effort and costs compared to actually carrying out the necessary accelerations or cornering by means of a motor vehicle. In addition, longer accelerations (e.g. more than 3 s or more than 5 s) can be simulated in a technically simple manner by holding the surfaces at the angle of inclination for a longer period of time.

According to one embodiment of the method, the simulator device comprises a spatial movement machine and an inclination simulator, with accelerations of the resource container and / or the inclination of the surface being generated at least partially by means of the spatial movement machine, and with the inclination of the surface being carried out at least partially by the inclination simulator. One advantage of this is that actual accelerations of the operating material container by means of the moving machine can be combined with an inclination of the operating material container to simulate an acceleration. In this way, a particularly large variety of driving situations, especially extreme driving situations, can be simulated.

According to one embodiment of the method, the slope simulator is on the Moving machine arranged. One advantage of this is that, from a technical point of view, an acceleration is combined with a simulated acceleration in the form of a slope of the surface in a particularly simple manner.

According to one embodiment of the method, the surface is inclined by an inclination angle of at least 30 ° with respect to the horizontal. The advantage of this is that extreme driving situations or accelerations due to inclination of the surface and thus of the operating medium container can also be simulated.

According to one embodiment of the method, the inclination simulator inclines the surface by an inclination angle which corresponds to the difference between the determined inclination angle of the surface and the maximum inclination angle of the movement machine. One advantage of this is that the specific inclination for simulating the acceleration can be easily divided between the motion machine and the inclination simulator. In particular, the greater part of the inclination can be carried out by the movement machine and the smaller part of the acceleration that cannot be simulated by inclination of the movement machine is simulated by inclination of the inclination simulator. As a result, the inclination simulator can have a particularly simple technical structure.

According to one embodiment of the simulator device, the simulator device further comprises a spatial movement machine and an inclination simulator, the inclination angle of the surface to the horizontal being dependent on the inclination angle of the spatial movement machine to the horizontal and on the inclination angle of the inclination simulator to the horizontal. The advantage here is that the acceleration machine can expose the operating medium container to actual accelerations and further accelerations can be simulated by inclining the motion machine and / or the inclination simulator. A particularly large number of different driving situations, especially extreme driving situations, can thus be simulated.

According to one embodiment of the simulator device, the inclination simulator is arranged on the movement machine. One advantage of this is that the simulator device can be constructed in a technically particularly simple manner. The moving machine can also have a large weight.

According to one embodiment of the simulator device, the control device is designed to divide the specific inclination between the movement machine and the inclination simulator such that the movement machine is inclined to the maximum and the remaining inclination required to achieve the specific inclination is carried out by inclining the inclination simulator. One advantage of this is that the inclination simulator can be designed in a technically particularly simple manner.

According to one embodiment of the simulator device, the inclination simulator comprises at least one height-adjustable element and one non-height-adjustable element with a ball joint. The advantage here is that the inclination simulator has a technically simple structure. In addition, the inclination simulator can have a particularly low weight.

A preferred operating medium is fuel. It is also conceivable that the technology disclosed here is used to store other liquids (e.g. water for water injection into the engine or an aqueous urea solution such as AdBlue®) in a motor vehicle. Even if an operating medium tank, operating medium pump and the like are mentioned here, the terms fuel tank and fuel pump should also be disclosed.

The technology disclosed here relates to an operating medium container which forms the storage volume for storing the operating medium. The operating medium container thus forms the essentially fluid-tight outer shell of the storage volume and delimits the storage volume from the installation space. In the case of plastic containers, for example, one speaks of the bubble. In the case of steel containers, the operating medium container can be formed from two metal shells, for example. The operating medium container can advantageously have a saddle shape, with a main chamber and a secondary chamber, which are connected to one another via a connecting area.

The operating medium pump is preferably a passive pump, in particular a suction jet pump. Suction jet pumps as such are known. A suction jet pump usually comprises a mixing tube with a cone that diverges in the direction of flow. A propellant flows into this mixing tube and generally sucks in the operating medium from the suction line. Such a suction jet pump is comparatively inexpensive, fail-safe and requires comparatively little space.

A spatial movement machine can incline a surface or surface relative to the horizontal and accelerate an object on the surface or surface. The inclination simulator can be arranged or fastened in a non-slip manner on the surface or surface of the motion machine. The spatial movement machine can comprise or be a parallel kinematic machine. The spatial movement machine preferably comprises a hexapod.

In other words, the technology disclosed here relates to a method and a device in which an acceleration, in particular a longer-lasting acceleration, of an operating medium in an operating medium container of a motor vehicle is at least partially replaced by an equivalent or the acceleration proportional inclination of the operating medium container becomes.

• 1 eine schematische Ansicht eines Betriebsmittelbehälters in Ruhelage;
• 2 eine schematische Ansicht eines Betriebsmittelbehälters während einer Beschleunigung;
• 3 eine schematische Ansicht eines Betriebsmittelbehälters bei einer Simulation einer Beschleunigung;
• 4 eine schematische Ansicht einer ersten Ausführungsform einer Simulatorvorrichtung gemäß der hier offenbarten Technologie mit horizontal ausgerichteter Fläche;
• 5 eine schematische Ansicht der Simulatorvorrichtung aus 4 mit geneigter Fläche; und
• 6 eine schematische Ansicht einer zweiten Ausführungsform einer Simulatorvorrichtung gemäß der hier offenbarten Technologie mit horizontal ausgerichteter Fläche.

The technology disclosed here will now be explained with reference to the figures. Show it:

• 1 a schematic view of a resource container in the rest position;
• 2 a schematic view of a resource container during acceleration;
• 3 a schematic view of a resource container during a simulation of an acceleration;
• 4th a schematic view of a first embodiment of a simulator device according to the technology disclosed here with a horizontally oriented surface;
• 5 a schematic view of the simulator device from 4th with inclined surface; and
• 6 a schematic view of a second embodiment of a simulator device according to the technology disclosed here with a horizontally oriented surface.

1 shows a schematic view of a resource container 30th in rest position. 2 shows a schematic view of a resource container 30th during an acceleration. 3 shows a schematic view of a resource container 30th when simulating an acceleration.

The resource container 30th stores a resource 35 of a motor vehicle inside. The resource 35 can for example include or be fuel, water and / or an agent for the selective catalytic reduction (SCR) of exhaust gases, such as an aqueous urea solution or AdBlue®. The motor vehicle can be a car, a truck, a motorcycle, a bus, a ship or an airplane.

As from the 1-3 an acceleration of an operating medium container can be seen 30th of a motor vehicle due to the inclination of the operating fluid container 30th can be simulated. In 1 shows the gravitational force 50 downward. In 2 the acceleration results in a resultant force pointing downwards to the right 58 from gravitational force 50 and acceleration force or centrifugal force 55 . In 3 shows the gravitational force 50 down, but the resource container 30th is inclined or tilted relative to the horizontal. Thus, in 3 by tilting the resource container 30th the acceleration that is in 2 on the resource container 30th acts, simulated.

In the middle at the lower end of the operating fluid container 30th is the delivery opening 40 . An operating fluid pump conveys the operating fluid 35 or pumps the operating fluid 35 through the conveyor opening 40 from the resource container 30th from.

4th shows a schematic view of a first embodiment of a simulator device 10 according to the technology disclosed herein with a horizontally oriented surface 27 . 5 Figure 3 shows a schematic view of the simulator device 10 out 4th with inclined surface 27 .

The simulator device 10 comprises a control device 70 , a slope simulator 20th and an area 27 on which the resource container 30th is arranged or attached. The slope simulator 20th includes a base plate 28 that is placed on the floor and / or attached to the floor. Between the base plate 28 and the area 27 on which the resource container 30th arranged and / or attached are two height-adjustable elements 22nd , 23 and a non-height-adjustable element 24 arranged in a kind of triangle. The height of the two height-adjustable elements 22nd , 23 , which can each have a telescopic extension mechanism, can be enlarged and reduced. The non-height-adjustable element 24 is about a ball joint 25th with the area 27 connected. Thus, the slope of the surface 27 can be changed in two directions relative to the horizontal. The slope simulator 20th is via a connection line or wirelessly with a control device 70 connected. The control device 70 sends control signals to the slope simulator 20th for setting or changing the inclination of the surface 27 . The control device 70 controls or regulates the slope simulator 20th , ie which angle to the horizontal of the equipment container 30th having.

An acceleration or a driving situation, its effects on the equipment container 30th or the equipment 35 should be examined is determined. This acceleration can now partially or completely result in an inclination of the operating medium container 30th to the horizontal are converted that the on the equipment container 30th or the equipment 35 acting gravitational force 50 in the inclined position of the surface 27 the effective or resulting force from gravitational force 50 and Acceleration force corresponds. This is in 2 or. 3 shown as an example.

It is possible to change the inclination continuously over time, so that an increase or a decrease in the acceleration over time can also be simulated.

The control device 70 calculates the desired acceleration into the corresponding incline. At higher acceleration is the angle of inclination by which the surface 27 with the resource container 30th must be inclined, greater than with smaller accelerations.

The surface 27 of the slope simulator 20th is then inclined accordingly and during the inclination it is checked whether the delivery opening 40 of the resource container 30th with resources 35 is covered or whether equipment 35 through the conveyor opening 40 of the resource container 30th can be promoted or pumped. This can be examined at different angles of inclination and in this way statements can be made as to whether operating resources are being removed in certain acceleration situations 35 (depending on the status of the equipment 35 in the resource container 30th ) is possible or not.

The design of the operating medium container can be based on this 30th can be changed or adapted.

The angle of the face 27 can be at least 30 ° to the horizontal, for example. It is conceivable that the area 27 can be inclined up to an angle of approx. 45 ° or approx. 60 ° to the horizontal.

In the following description of the in 6 The alternative exemplary embodiment shown are used for features that differ in comparison to the one in FIG 4th and 5 The first exemplary embodiment shown are identical and / or at least comparable in their design and / or mode of operation, the same reference symbols are used. Unless these are explained again in detail, their design and / or mode of action corresponds to the design and / or mode of action of the features already described above.

6 shows a schematic view of a second embodiment of a simulator device 10 according to the technology disclosed herein with a horizontally oriented surface 27 .

The simulator device 10 can in addition to the slope simulator 20th a spatial movement machine 60 include. The spatial movement machine 60 may comprise a hexapod or be a hexapod. The Hexapod can hold the resource container 30th subject to actual acceleration forces. The time that the acceleration forces take effect is typically in the range of a few seconds, for example approx. 1 s to approx. 3 s.

The slope simulator 20th can on the motor machine 60 be arranged. This means that the slope simulator 20th on the movable surface 27 or surface of the motion machine 60 (non-slip) is arranged or attached. In principle, the reverse arrangement, ie the motion machine, is also conceivable 60 can on the slope simulator 20th be arranged.

The slope of the surface 27 depends on the slope of the slope simulator surface 20th and the inclination of the moving machine 60 or the surface of the motion machine 60 from.

It is possible that the accelerations of the desired acceleration scenario as far as possible by the motion machine 60 as accelerations actually occurring on the operating medium container 30th are executed. The acceleration values of the desired acceleration scenario that are no longer due to the motion machine 60 can be generated by inclining the surface 27 of the slope simulator 20th simulated around a certain slope value.

It is also conceivable that the specified acceleration is as far as possible through the inclination simulator 20th can be simulated and the rest by the actual acceleration by means of the motion machine 60 is produced.

It is also possible that there is no acceleration due to the motion machine 60 is generated, but both the motion machine 60 as well as the slope simulator 20th be inclined or tilted accordingly relative to the horizontal.

The division between the movement machine 60 and the slope simulator 20th can be set or changed continuously / steplessly. In addition, the ratio of the division to the movement machine 60 and the slope simulator 20th also change during a simulation.

The division of the specified acceleration into the actual acceleration by the motion machine 60 and simulated acceleration by inclination of the surface 27 of the slope simulator 20th (and / or the motion machine 60 ) can through the control device 70 carried out or calculated.

The control device 70 calculates the slope of the surface for the acceleration that is required 27 to apply a force equivalent to the real acceleration on the equipment container 30th or the equipment 35 to let it work.

The control device 70 can filter out the components that the motion machine 60 or the hexapod cannot display or generate, and transmits the components into inclination information or an inclination signal / control signal for the inclination simulator 20th .

The simulation of a drive-up of a motor vehicle onto a federal motorway, for example, requires an inclination of approx. 30 ° - approx. 40 ° in order to simulate the acceleration of 0.6 g - 0.8 g.

For reasons of legibility, the expression “at least one” has been partially omitted. If a feature of the technology disclosed here is described in the singular or indefinitely (e.g. the / an inclination simulator 20th , the / a spatial movement machine 60 , the / an area 27 , etc.) at the same time their majority should also be disclosed (e.g. the at least one inclination simulator 20th who have at least one spatial motion machine 60 that have at least one face 27 , Etc.).

The term “essentially” (eg “essentially vertical axis”) in the context of the technology disclosed here includes the exact property or the exact value (e.g. “vertical axis”) as well as deviations that are insignificant for the function of the property / value (eg “tolerable deviation from the vertical axis”).

The preceding description of the present invention is for illustrative purposes only and not for the purpose of limiting the invention. Various changes and modifications are possible within the scope of the invention without departing from the scope of the invention and its equivalents.

List of reference symbols

10

Simulator device

20th

Slope simulator

22, 23

height-adjustable elements

24

non-height adjustable element

25th

Ball joint

27

surface

28

Base plate

30th

Equipment container

35

Resources

40

Funding opening

50

Gravitational force

55

Centrifugal force

58

resulting power

60

Motion machine (hexapod)

70

Control device

Claims (10)

A method for simulating cornering and / or acceleration of a motor vehicle with an operating medium container (30) by means of a simulator device (10), the method comprising the following steps: Arranging the operating medium container (30) with a conveying opening (40) on a surface (27); Determining an angle of inclination of the surface (27) at which the gravitational force (50) at least partially corresponds to the forces occurring during a predetermined cornering and / or with a predetermined acceleration; Inclination of the surface (27) by the determined angle of inclination to simulate cornering and / or acceleration of the operating medium container (30); and Check whether the operating medium (35) can be conveyed out of the operating medium container (30) through the conveying opening (40) of the operating medium container (30) while the surface (27) is inclined at the specific angle of inclination. Procedure according to Claim 1 , wherein the simulator device (10) comprises a spatial movement machine (60) and an inclination simulator (20), with accelerations of the operating material container (30) and / or the inclination of the surface (27) being generated at least partially by means of the spatial movement machine (60), and wherein the inclination of the surface (27) is performed at least in part by the incline simulator (20). Procedure according to Claim 2 wherein the inclination simulator (20) is arranged on the movement machine (60). Method according to one of the preceding claims, wherein the surface (27) is inclined by an inclination angle of at least 30 ° with respect to the horizontal. Method according to one of the Claims 2 - 4th wherein the inclination simulator (20) inclines the surface (27) by an inclination angle which is the difference between the determined inclination angle of the surface (27) and the maximum angle of inclination of the moving machine (60). Simulator device (10) for simulating cornering and / or acceleration of a motor vehicle with an operating medium container (30), wherein the simulator device (10) a surface (27) which can be inclined relative to the horizontal for arranging the operating medium container (30) with a conveying opening (40) for conveying the operating medium (35) from the operating medium container (30) and a control device (70) for determining an angle of inclination of the surface (27) at which the gravitational force (50) at least partially corresponds to the forces occurring during a given cornering and / or a given acceleration, and to check whether the operating medium (35) can be conveyed out of the operating medium container (30) through the conveying opening (40) of the operating medium container (30) while the surface (27) is inclined at the specific angle of inclination. Simulator device (10) according to Claim 6 further comprising a spatial movement machine (60) and an inclination simulator (20), the inclination angle of the surface (27) to the horizontal being dependent on the inclination angle of the spatial movement machine (60) to the horizontal and on the inclination angle of the inclination simulator (20) to the horizontal. Simulator device (10) according to Claim 7 wherein the inclination simulator (20) is arranged on the movement machine (60). Simulator device (10) according to Claim 7 or 8th , wherein the control device (70) for dividing the determined inclination to the movement machine (60) and the inclination simulator (20) in such a way that the movement machine (60) is inclined to the maximum and the remaining inclination required to achieve the determined inclination by inclination of the inclination simulator ( 20) is executed, is formed. Simulator device (10) according to one of the Claims 7 - 9 wherein the inclination simulator (20) comprises at least one height-adjustable element (22, 23) and one non-height-adjustable element (24) with a ball joint (25).

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