WO2021013941A1 - Couvercle protecteur destiné à des réservoirs de compensation dans un réservoir de liquide de fonctionnement et réservoir de liquide de fonctionnement pourvu du réservoir de compensation et du couvercle protecteur - Google Patents

Couvercle protecteur destiné à des réservoirs de compensation dans un réservoir de liquide de fonctionnement et réservoir de liquide de fonctionnement pourvu du réservoir de compensation et du couvercle protecteur Download PDF

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Publication number
WO2021013941A1
WO2021013941A1 PCT/EP2020/070824 EP2020070824W WO2021013941A1 WO 2021013941 A1 WO2021013941 A1 WO 2021013941A1 EP 2020070824 W EP2020070824 W EP 2020070824W WO 2021013941 A1 WO2021013941 A1 WO 2021013941A1
Authority
WO
WIPO (PCT)
Prior art keywords
protective cover
wall
expansion tank
operating fluid
fluid container
Prior art date
Application number
PCT/EP2020/070824
Other languages
German (de)
English (en)
Inventor
Gernot WEIß
Dirk Holzkämper
Stefan Lenz
Christoph Mehren
Christoph Schwenk
Oliver Heinrich
Original Assignee
Kautex Textron Gmbh & Co. Kg
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Kautex Textron Gmbh & Co. Kg filed Critical Kautex Textron Gmbh & Co. Kg
Publication of WO2021013941A1 publication Critical patent/WO2021013941A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
    • B60K15/03—Fuel tanks
    • B60K15/035—Fuel tanks characterised by venting means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
    • B60K15/03—Fuel tanks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
    • B60K15/03—Fuel tanks
    • B60K15/035—Fuel tanks characterised by venting means
    • B60K15/03504—Fuel tanks characterised by venting means adapted to avoid loss of fuel or fuel vapour, e.g. with vapour recovery systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
    • B60K15/03—Fuel tanks
    • B60K2015/03072—Arrangements for reducing evaporation
    • B60K2015/03078—Membranes, layers or the like covering the surface of the fuel
    • B60K2015/03085—Membranes, layers or the like covering the surface of the fuel using inflatable bags or bladders in the tanks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
    • B60K15/03—Fuel tanks
    • B60K15/035—Fuel tanks characterised by venting means
    • B60K2015/03542—Mounting of the venting means
    • B60K2015/03557—Mounting of the venting means comprising elements of the venting device integrated in the fuel tank, e.g. vapor recovery means

Definitions

  • the present invention relates to a protective cover for ei NEN arranged in an operating fluid container from equalizing container.
  • the present invention further relates to an operating fluid container for a motor vehicle with an equalizing container arranged in the operating fluid container interior and a protective cover arranged between an operating fluid container wall and the equalizing container wall.
  • operating fluid containers designed as fuel tanks or as fuel tanks.
  • Operating fluid containers within the meaning of the invention are in particular, but not exclusively, fuel tanks (for petrol or diesel fuel) for motor vehicles, urea containers, washer fluid containers, oil containers, secondary fluid containers or additive containers for motor vehicles.
  • Containers of the type mentioned at the outset are often produced by extrusion blow molding, HDPE (high density polyethylene) in particular being suitable for the production of extrusion blow molded containers. It is also possible to manufacture corresponding operating fluid containers by means of an injection molding process. Furthermore, it is also possible to manufacture corresponding operating fluid containers by rotary sintering. Operating fluid containers made of metal can also be used.
  • the fuel is also heated when heat is applied to a fuel tank, so that the vapor pressure of the fuel increases and the fuel tank is pressurized with a corresponding internal pressure.
  • the pressure increase within the fuel tank would continue until the partial pressure of the fuel inside the fuel tank has matched the vapor pressure of the fuel at the corresponding temperature.
  • the partial pressure and the resulting internal pressure of the fuel tank is greater than at low ambient temperatures.
  • the fuel tank is deformed by a corresponding application of internal pressure. The same applies at low temperatures, at which the internal pressure in the fuel tank drops, so that a negative pressure develops in the fuel tank, as a result of which the fuel tank is subject to deformation.
  • vent a fuel tank To vent a fuel tank, it has at least one vent valve, which in turn is fluidly connected to a vent line for diverting the excess pressure to the atmosphere.
  • a vent line In the case of a fuel tank designed for gasoline in particular, its vent line is fluidly connected to an activated carbon filter for passing fuel vapors through and filtering them out. The gases filtered through the activated carbon filter are released into the atmosphere after passing through the activated carbon filter.
  • the activated charcoal filter When the internal combustion engine is in operation, the activated charcoal filter is flushed by means of intake air, so that fuel vapors bound in the activated charcoal can be fed to the internal combustion engine. Due to the flushing process with suction air, the size of the activated carbon filter can be limited.
  • motor vehicles that have a hybrid drive which means that they have both an internal combustion engine and an electric motor to drive the motor vehicle, require a fuel tank that can withstand increased internal pressures.
  • an activated carbon filter fluidly connected to the fuel tank is correspondingly less flushed, since the activated carbon filter cannot be flushed in the electrical operating phase of the motor vehicle. Therefore, in the electrical operating phases of the motor vehicle, the activated carbon filter should not be loaded with hydrocarbons, so that gas exchange should be prevented during the electrical operating phase, so that it would be advantageous to make the fuel tank more rigid and / or pressure-resistant.
  • wrapped fuel tanks are complex to manufacture and therefore costly.
  • an effective wrap-around geometry restricts the freedom of design and thus the usable volume.
  • Stiffening elements within a fuel tank are now being used successfully, so that appropriately formed fuel tanks withstand increased internal pressures and also heightened negative pressures, but have an effect on the Fuel tank arranged and connected to the fuel tank walls stiffening elements reduce the usable volume of the fuel tank.
  • WO 2016/012284 A1 describes a fuel tank in whose fuel tank interior an expansion tank is arranged, which is fluidly connected to the atmosphere via an optional adsorption device for adsorbing gaseous fuel components.
  • the expansion tank is designed to be elastic, so that if there is overpressure in the fuel tank interior compared to the atmosphere, an equalizing volume of the expansion tank is reduced, whereas if there is negative pressure in the fuel tank interior compared to the atmosphere, the compensation volume increases.
  • the problem with the fuel tank known from WO 2016/012284 A1 is that the expansion tank in the expanded state can come into contact with built-in parts of the fuel tank, so that both the expansion tank and the built-in parts of the fuel tank that come into contact with it are damaged and / or can be hindered in their function. Furthermore, due to the elastic design of the equalization tank, the fuel tank interior is not optimally used due to the uncontrolled expansion and compression movement of the expansion tank, so that the fuel tank and the expansion tank must be relatively large. Furthermore, due to the elastic design of the expansion tank, there is the problem that the wall of the expansion tank has a reduced barrier property, so that a relatively large amount of hydrocarbons can continue to diffuse through the wall of the expansion tank into its compensation volume.
  • the present task is based on the task of providing a protective cover for an operating fluid container provide arranged expansion tank by means of which the problems described above are eliminated.
  • a connecting device having the features of claim 1.
  • Advantageous embodiments of the device connecting device are described in the claims dependent on claim 1 ben.
  • the underlying of the present invention is solved by a protective cover for an expansion tank arranged in an operating fluid container, the protective cover having a fastening device by means of which the protective cover can be attached to the expansion tank at least indirectly in such a way that a protective cover wall of the protective cover is sandwiched Between tween an operating fluid container wall and an equalizing container wall is arranged
  • the protective cover according to the invention protects both the operating fluid container and the expansion tank in particular from damage. This also ensures in the long term that a barrier layer (e.g. an EVOH layer) provided in the expansion tank, for example, is not damaged, so that no hydrocarbons are released into the environment, especially when the expansion tank is breathing.
  • a barrier layer e.g. an EVOH layer
  • the protective cover is preferably positively and / or positively connected to the equalizing container by means of the fastening device. Since the protective cover can be attached to the expansion tank, the protective cover is also arranged within the operating fluid container in the assembled state, ie when mounting in the operating fluid container.
  • the protective cover can be attached directly to the expansion tank, i.e. directly. It is also possible that the protective cover is attached to the expansion tank by means of a connec tion device, wherein the connection device is preferably materially connected to the expansion tank.
  • the protective cover wall preferably has a larger area than the expansion tank wall, so that the protective cover wall projects beyond the expansion tank wall in a plan view.
  • the fastening device can also be designed as a bayonet lock.
  • the protective cover is preferably made of a material that is not weld-compatible with the material of the expansion tank and / or the material of the operating fluid tank.
  • the protective cover is preferably made of POM or PK (Po lyketon). With a corresponding design of the protective cover, it is advantageous that the protective cover is not inadvertently welded to the expansion tank and / or the operating fluid container during the manufacturing process of the operating fluid container.
  • the protective cover wall of the protective cover is sandwiched between the operating fluid container wall and an expansion tank wall such that the expansion tank is supported on an inner surface of the protective cover wall during a compression movement of the expansion tank.
  • Supporting the expansion tank on the inner surface of the protective cover wall means that the expansion tank wall, between which and the operating fluid container wall the protective cover wall is arranged, is in contact with the protective cover wall, so that the protective cover wall is arranged between the operating fluid container wall and the expansion tank wall.
  • the protective cover has an assembly opening arranged in the protective cover wall, the protective cover being attachable to the expansion tank in such a way that the assembly opening closes an opening in the expansion tank.
  • the feature according to which the mounting opening encloses the opening of the equalizing tank is to be understood such that in plan view of the outer surface of the equalizing tank wall, the mounting opening encloses the opening of the equalizing tank.
  • the diameter of the assembly opening is preferably larger than the diameter of the opening of the expansion tank.
  • the protective cover is preferably designed in such a way that the fastening device is designed all the way around the assembly opening.
  • the correspondingly designed protective cover enables reliable attachment to the expansion tank or a connecting device which is connected to the expansion tank, so that when force is applied to the protective cover different directions (for example by sloshing around pende operating fluid within the operating fluid container) the protective cover remains reliably attached to the expansion tank or the connecting device.
  • the protective cover is preferably designed in such a way that the fastening device has a multiplicity of fastening springs which are separated from one another by material recesses in the protective cover wall.
  • the fastening springs can also be referred to as fastening straps.
  • fastening springs are separated by the respective material recesses, fastening to, for example, a retaining groove of a connecting device is particularly easy.
  • the protective cover preferably has an angular positioning device, wherein the protective cover can be fastened to the expansion tank at a predetermined angular position using the angular positioning device.
  • the angular positioning device is preferably designed as a material recess in the fastening device.
  • angular positioning device is understood to mean a mechanical interaction with the expansion tank or a connecting device connected to the expansion tank.
  • the protective cover is preferably designed such that the protective cover has at least one spacer on an outer surface of the protective cover wall.
  • the at least one spacer ensures that the protective cover wall does not lie fully against an inner surface of an operating fluid container wall.
  • the correspondingly designed protective cover offers the advantage that further components can be arranged between the protective cover wall and the operating fluid container wall, so that the space available for the operating fluid container can be used more effectively.
  • the protective cover preferably has at least one spring tab on an outer surface of the protective cover wall. Due to the spring clip, rattling noises within an operating fluid container are reduced or even completely avoided during ferry operation.
  • the distance between the protective cover wall and the operating fluid container wall is consequently variable.
  • the protective cover also has a spacer in addition to the at least one spring tab, which is also arranged on the outer surface of the protective cover wall, then the spring tab preferably protrudes further away from the protective cover wall than the spacer.
  • the protective cover has at least one side wall connected to the protective cover wall, which is connected to the Protective cover wall encloses an angle between 70 ° and 160 °.
  • the correspondingly designed protective cover provides a receiving space within which the expansion tank can be completely accommodated, at least in the compressed state.
  • the expansion tank is thus protected from mechanical and thermal influences, for example during the manufacturing process of an operating fluid tank.
  • the side wall also serves as a slosh protection wall within an operating fluid container, so that less sloshing noises are generated during ferry operation.
  • the side wall preferably has a greater longitudinal extent than the expansion tank in its compressed state.
  • the side wall is preferably formed circumferentially around the protective cover wall.
  • the protective cover preferably has at least one grip device arranged on the side wall, by means of which the protective cover can be gripped.
  • the correspondingly designed protective cover is particularly easy to handle during the manufacturing process of an operating fluid container into which the protective cover is installed, so that the manufacturing process of the operating fluid container is simplified.
  • At least one holding device is provided on the side wall, by means of which at least one fixing device can be releasably attached to the side wall so that the expansion tank can be fixed in a compressed state by means of the fixing device.
  • the appropriately designed protective cover is advantageous in the manufacturing process of the operating fluid container, since the expansion tank can be installed in the compressed state during the manufacturing and assembly process of the operating fluid container.
  • At least one side spacer is arranged on the side wall.
  • the spacer can preferably also serve as a holder for a foot.
  • the correspondingly designed protective cover has the advantage that when the protective cover and the equalizing container are installed, blown air can pass between the operating fluid container wall and the protective cover within the operating fluid container, so that the operating fluid container wall can be cooled more effectively.
  • the protective cover is preferably designed such that the protective cover wall has at least one ventilation opening, so that fluid communication through the protective cover wall is made possible.
  • the correspondingly designed protective cover has the advantage that no air pockets can form beneath the protective cover, so that the available recording volume within the operating fluid container can be optimally used.
  • the protective cover preferably has at least one holding device for holding a component on the protective cover.
  • the holding device preferably has two material webs, between which, for example, a fluid line can be positioned and fastened.
  • the present invention is based on the object of providing an operating fluid container with an expansion tank in which both the operating fluid container, the expansion tank and, if necessary, built-in parts in the operating fluid container are protected.
  • an operating fluid container for a motor vehicle for receiving an operating fluid where the operating fluid container has an at least indirectly fluid-connected expansion tank with the atmosphere, with an expansion tank volume being reduced when there is excess pressure in the operating fluid container compared to the atmosphere , and with negative pressure in the operating fluid tank compared to the atmosphere, the expansion tank volume increases.
  • the operating fluid container is characterized in that it has a protective cover as described above, which is fastened at least indirectly to the expansion tank by means of its fastening device in such a way that the protective cover wall is sandwiched between an operating fluid container wall and an expansion tank wall, so that when the expansion tank is compressed the expansion tank is supported on an inner surface of the protective cover wall.
  • the operating fluid container preferably has a connec tion device for connecting the expansion tank to the Operating fluid tank, so that the expansion tank is arranged in an operating fluid tank interior, a first connecting surface surrounding a through opening of the connecting device being materially connected to an inner surface of a compensating tank wall, the inner surface of the compensating tank wall enclosing an opening of the compensating tank being connected to the first connecting surface of the connecting device .
  • a second connection surface running around the through-opening of the connection device is materially connected to an inner surface of an operating fluid container wall.
  • a stop surface of the connecting device limits a compression movement of the expansion tank.
  • the connecting device has a fastening device arranged between the first connecting surface and the second connecting surface for fastening the protective cover, the protective cover being fastened to the connecting device by means of its fastening device and by means of the fastening device of the connecting device, so that the protective cover wall between the operating fluid container wall and the Expansion tank wall is arranged.
  • FIG. 1 a perspective illustration of a protective cover according to the invention
  • FIG. 2 the protective cover shown in FIG. 1, which is fastened to an expansion tank;
  • FIG. 3 a sectional illustration through the connection area between the expansion tank and the protective cover
  • FIG. 4 the expansion tank shown in FIGS. 2 and 3 in isolation
  • FIG. 5 a connecting device which is connected to the expansion tank shown in FIGS. 2 to 4;
  • FIG. 6 a sectional view through the protective cover attached to the expansion tank in FIG. 2, the expansion tank being compressed;
  • FIG. 7 the arrangement shown in FIG. 6, the equalizing container being expanded
  • FIG. 8 a perspective illustration of the underside of the protective cover according to the invention.
  • FIG. 9 a detailed view of the fastening area between the protective cover and a connecting device of a compensation tank.
  • Figure 10 a sectional view through an inventive
  • FIG. 1 shows a perspective illustration of a protective cover 90 according to the invention for an expansion tank 80 arranged in an operating fluid container 50.
  • the operating fluid container 50 is shown in FIG. 10
  • the expansion tank 80 is shown in FIGS. 2 to 4 and 6 to 10.
  • the protective cover 90 has a fastening device 92 by means of which the protective cover 90 can be fastened at least indirectly to the expansion tank 80 in such a way that a protective cover wall 91 of the protective cover 90 is sandwiched between an operating fluid tank wall 51 and an expansion tank wall 81 (see FIG. 10). .
  • the protective cover 90 has a mounting opening 93 arranged in the protective cover wall 91, the protective cover 90 being attachable to the expansion tank 80 in such a way that the mounting opening 93 encloses an opening 85 of the expansion tank 80 (see FIG ). It can also be seen from FIG. 1 that the fastening device 92 is formed circumferentially around the assembly opening 93.
  • the fastening device 92 has a multiplicity of fastening springs 92 a, which are separated from one another by material recesses 92 b in the protective cover wall 91. Consequently, the fastening springs 92a, which can also be referred to as fastening tabs 92a, have a certain elasticity, so that they can simply engage in a locking groove to be described later.
  • FIG. 4 is a perspective illustration of a compensating container 80 which is welded to a connection device 2 shown in FIG.
  • FIG. 5 shows the connecting device 2 on its own.
  • the connecting device 2 serves to connect the equalizing tank 80 (see FIG. 4) to an operating fluid container 50 (see FIG. 10).
  • the connecting device 2 also serves to fasten the protective cover 90 to the expansion tank 80.
  • the operating fluid container 50 is formed in the illustrated embodiments as a fuel tank 50 for motor vehicles.
  • the connecting device 2 is used to connect the expansion tank 80 to the operating fluid container 50 in such a way that the expansion tank 80 is arranged in an operating fluid container interior 53.
  • the connecting device 2 has a through opening 13 around which a first connecting surface 11 is provided for a material connection to an inner surface 82 of an expansion tank wall 81 (see FIG. 3).
  • the first connecting surface 11 is designed as an outer cylindrical surface 11.
  • the connecting device 2 has a second connecting surface 12 which runs around the through opening 13 and is designed for a material connection to an inner surface 52 of an operating fluid container wall 51 (see FIG. 10). Furthermore, the connecting device 2 has a stop surface 14 for limiting a compression movement of the equalizing container 80. The limitation of the compression movement of the expansion tank 80 by means of the stop surface 14 is realized in that an inner surface of the expansion tank 80 strikes the stop surface 14.
  • the connecting device 2 is essentially hollow-shaped, with stiffening ribs 22 being provided for structural stiffening of the connecting device 2, which are arranged circumferentially around the through opening 13 and also radially from the through opening 13 to the edge the connecting device 1 run.
  • the connecting device 2 also has a fastening device 17 for fastening the protective cover 90, the fastening device 17 being arranged between the first connecting surface 11 and the second connecting surface 12 and designed as a locking groove 17 encircling the through opening 13.
  • the connecting device 2 has a receiving surface 20 which is connected to the first connecting surface 11.
  • the receiving surface 20 forms an angle of approximately 135 ° with the first connecting surface 11 in the connecting device 2 shown in FIGS. 3 and 5.
  • the receiving surface 20 serves to receive an accumulation of material 83 of the equalizing tank wall 81.
  • this material accumulation 83 is supported by the receiving surface 20, so that an uncontrolled spread of material from the expansion tank wall 81 is prevented.
  • the connecting device 2 is designed as a two-component component 2 and has a first component 2a and a second component 2b, the first component 2a having the first connecting surface 11 and the second connecting surface 12, and the second component 2b having the stop surface 14 .
  • the first component 2a is made of a first plastic
  • the second component 2b is made of a second plastic.
  • the first plastic from which the first component 2a is formed is preferably formed from a material that is weld-compatible with the material of the operating fluid container wall 81 and with the material of the expansion tank wall 81.
  • the first component 2a is formed from a PE plastic, more preferably from an HDPE plastic.
  • the second plastic, from which the second component 2b is formed is preferably a plastic that is not sch spakompati bel with the material of the expansion tank wall 81, so that in a process of connecting the expansion tank 80 to the operating fluid container 50, in which a pressure from an underside on the expansion tank 80 is formed in the direction of the inner surface 52 of the operating fluid tank wall 81, the plastic of the expansion tank wall 81 does not adhere to the stop surface 14 of the second component 2b.
  • the second plastic is a POM plastic.
  • the first connection surface 11 is corrugated, so that an enlarged surface is available during a connection process with an expansion tank wall 81 and a more intimate connection with the inner surface 82 of the expansion tank wall 81 is made possible.
  • the connecting device 2 has a first positioning device 16 which is designed as a material projection 16 in the through opening 13 of the connecting device 2. Since the fürgangsöff voltage 13 has a circular cross-section, an angularly correct connection of the connecting device 2 to the inner surface 52 of the operating fluid container 50 is made possible by the first positioning device 16 formed as a projection 16.
  • the connecting device 2 has a second positioning device 18, which in the illustrated embodiment has two radial projections 18 by means of which the protective cover 90 (see Figure 9) can be attached to the connecting device 2 in a predetermined angular position .
  • the expansion tank wall 81 limits an equalization tank volume 84 (see FIG. 10).
  • the equalizing tank wall 81 encloses the opening 85 (see FIG. 4) of the equalizing tank 80, via which a fluid exchange between the equalizing tank volume 84 and the atmosphere is made possible, so that the equalizing tank volume 84 is variable.
  • the equalizing tank volume 84 increases, whereas when there is overpressure in the equalizing tank 80 compared to the atmosphere, the equalizing tank volume 84 decreases.
  • the expansion tank volume 84 decreases when there is excess pressure in the operating fluid container 50 compared to the atmosphere, whereas this is reduced when the operating fluid container 50 is under negative pressure Expansion tank volume 84 enlarged.
  • the equalizing container 80 is shown in the compressed state, and in FIG. 7 shows the expansion tank 80 in the expanded state.
  • the expansion tank 80 is designed as a bellows 80.
  • the present invention is not limited to this, because the equalizing container 80 can, for example, also be formed from an elastic material.
  • the expansion tank 80 is supported on the inner surface 91a of the protective cover wall 91.
  • the protective cover 90 has an angular positioning device 94, the angular positioning device 94 being formed in the illustrated embodiment by appropriate material recesses 94 in the fastening tabs 92.
  • the second positioning devices 18 of the connecting device 2 then engage in these corresponding recesses 92.
  • the protective cover 90 can be attached to the expansion tank 80 in a predetermined angle position using the angular positioning device 94.
  • the protective cover 90 has a plurality of spacers 95 on its outer surface 91b of the protective cover wall 91. As can be seen from FIG. 10, the spacers 95 serve to contact the inner surface 52 of the operating fluid container wall 51.
  • the protective cover 90 has a plurality of spring tabs 96 on its outer surface 91b, which also rest on the inner surface 52 of the operating fluid container wall 51, so that it is possible for the protective cover 90 to be present. tensioned on the inner surface 52 of the operating fluid container wall 51 rests. This prevents rattling noises during operation of the motor vehicle.
  • the protective cover 90 has a side wall 97 which is formed in one piece with the protective cover wall 91. It can be seen that the protective cover wall 91 forms an angle of approximately 90 ° together with the side wall 97. A receiving volume is thus formed within the protective cover 90, in which the equalizing container 80 can be completely received in the compressed state (see FIG. 6).
  • the side wall 97 also serves as a slosh protection wall, so that sloshing noises caused by moving operating fluid are reduced when the motor vehicle is ferrying.
  • At least two holding openings 99 are provided in the side wall 97, into which the fixing rods 110 (see FIG. 8) can be inserted, so that the expansion tank 80 can be kept in the compressed state, for example during assembly of the expansion tank 80 in the operating fluid tank 50.
  • the protective cover 90 also has a plurality of holding devices 102, which are designed as holding webs 102 in the illustrated embodiment.
  • the holding devices 102 are used to fasten components to the protective cover 90. These components can be held either on the protective cover wall 91 or on the side wall 97.
  • the protective cover 90 On the side wall 97 there is also at least one side spacer 100 which, in the mounted state, enables support on an inner wall of the operating fluid container 50 (see FIG. 10). Furthermore, the protective cover 90 has a plurality of ventilation openings 101 which are seen in the protective cover wall 91. In this way, an air inclusion within the volume formed by the protective cover wall 91 and the side wall 97 is avoided.
  • the protective cover 90 To position and hold the protective cover 90, it has grip devices 98 arranged on the side wall 97, with which the protective cover 90 can be securely held within a blow molding device, for example by an actuator or robot.
  • an operating fluid container 50 for a motor vehicle for receiving an operating fluid is shown.
  • the operating fluid container 50 is designed as a fuel tank 50.
  • a compensation tank 80 is arranged inside the operating fluid tank 50, which is at least indirectly fluidly connected to the atmosphere. If there is excess pressure in the operating fluid container 50 compared to the atmosphere, an expansion tank volume 84 is reduced, whereas if there is negative pressure in the operating fluid container 50 in relation to the atmosphere, the expansion tank volume 84 increases.
  • the operating fluid container 50 has the protective cover 90, which is attached to the equalizing container 80 by means of the fastening device 92 and by means of the connecting device 2, so that the protective cover wall 91 is sandwiched between the operating fluid container wall 51 and the equalizing container wall 81 , so that the expansion tank 80 is supported on the inner surface 91 a of the protective cover 91 during a compression movement of the expansion tank 80.
  • the connecting device 2 described above is provided to connect the operating fluid container 50 with the equalizing container 80.
  • the first connecting surface 11 running around the through opening 13 of the connecting device 2 is welded to the inner surface 82 of the expansion tank wall 81, the inner surface 82 of the expansion tank wall 81 enclosing an opening 85 of the expansion tank 80 being welded to the first connecting surface 11 of the connecting direction 2.
  • the second connection surface 12, which likewise runs around the through opening 13 of the connection device 2, is welded to the inner surface 52 of the operating fluid container wall 51.
  • the locking groove 17 is arranged between the first connecting surface 11 and the second connecting surface 12, so that the protective cover 90 is attached to the connecting device 2 and thus to the expansion tank 80 by means of its fastening device 92 and by means of the locking groove 17 of the connecting device 2 so that the protective cover wall 91 is sandwiched between the operating fluid container wall 51 and the expansion tank wall 81.

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  • Life Sciences & Earth Sciences (AREA)
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  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)

Abstract

La présente invention concerne un couvercle protecteur (90) destiné à un réservoir de compensation (80) disposé dans un réservoir de liquide de fonctionnement (50), le couvercle protecteur (90) présentant un dispositif de fixation (92) au moyen duquel le couvercle protecteur (90) peut être fixé au moins indirectement sur le réservoir de compensation (80), de telle sorte qu'une paroi (91) du couvercle protecteur (90) est disposée en sandwich entre une paroi (51) du réservoir de liquide de fonctionnement et une paroi (81) du réservoir de compensation. La présente invention concerne en outre un réservoir de liquide de fonctionnement (50) pour un véhicule à moteur destiné à recevoir un liquide de fonctionnement, le réservoir de liquide de fonctionnement (50) présentant un réservoir de compensation (80) au moins indirectement en liaison fluidique avec l'atmosphère et un couvercle protecteur (90) disposé entre une paroi (51) du réservoir de liquide de fonctionnement et une paroi (81) du réservoir de compensation.
PCT/EP2020/070824 2019-07-25 2020-07-23 Couvercle protecteur destiné à des réservoirs de compensation dans un réservoir de liquide de fonctionnement et réservoir de liquide de fonctionnement pourvu du réservoir de compensation et du couvercle protecteur WO2021013941A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102019120196.9A DE102019120196A1 (de) 2019-07-25 2019-07-25 Schutzabdeckung für Ausgleichsbehälter in einem Betriebsflüssigkeitsbehälter und Betriebsflüssigkeitsbehälter mit Ausgleichsbehälter und Schutzabdeckung
DE102019120196.9 2019-07-25

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WO2021013941A1 true WO2021013941A1 (fr) 2021-01-28

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WO (1) WO2021013941A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113173212A (zh) * 2021-05-13 2021-07-27 哈尔滨工业大学 一种不倒翁式软体跳跃机器人

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3693825A (en) * 1971-06-28 1972-09-26 Gen Motors Corp Fuel tank having bellows for control of fuel evaporation
EP1028017A2 (fr) * 1999-02-10 2000-08-16 Mannesmann VDO Aktiengesellschaft Réservoir de carburant
WO2016012284A1 (fr) 2014-07-21 2016-01-28 Bayerische Motoren Werke Aktiengesellschaft Système de réservoir d'un véhicule automobile comportant un élément de variation de volume
DE102017116881A1 (de) * 2017-07-26 2019-01-31 Kautex Textron Gmbh & Co. Kg Betriebsflüssigkeitsbehälter mit Ausgleichsbehälter zum Ausgleichen von Druckschwankungen im Betriebsflüssigkeitsbehälter

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017210574A1 (de) * 2017-06-22 2018-12-27 Bayerische Motoren Werke Aktiengesellschaft Tank eines Kraftfahrzeuges mit Volumenelement
GB2575453B (en) * 2018-07-09 2021-01-20 Subsea 7 Norway As Subsea Fluid Storage Unit

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3693825A (en) * 1971-06-28 1972-09-26 Gen Motors Corp Fuel tank having bellows for control of fuel evaporation
EP1028017A2 (fr) * 1999-02-10 2000-08-16 Mannesmann VDO Aktiengesellschaft Réservoir de carburant
WO2016012284A1 (fr) 2014-07-21 2016-01-28 Bayerische Motoren Werke Aktiengesellschaft Système de réservoir d'un véhicule automobile comportant un élément de variation de volume
DE102017116881A1 (de) * 2017-07-26 2019-01-31 Kautex Textron Gmbh & Co. Kg Betriebsflüssigkeitsbehälter mit Ausgleichsbehälter zum Ausgleichen von Druckschwankungen im Betriebsflüssigkeitsbehälter

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113173212A (zh) * 2021-05-13 2021-07-27 哈尔滨工业大学 一种不倒翁式软体跳跃机器人
CN113173212B (zh) * 2021-05-13 2022-06-28 哈尔滨工业大学 一种不倒翁式软体跳跃机器人

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