DE102015220429A1 - A gasoline storage device for storing gas as fuel for a vehicle, apparatus for regulating gas output from a gasoline tank, gas tank system, and method for controlling gas delivery for a gas tank system - Google Patents

Abstract

The invention relates to a gas tank device (220) for storing gas as fuel for a vehicle. In this case, the gas tank device (220) has a plurality of gas containers (221, 222, 223) for storing gas. Also, the gas bank means (220) includes a high pressure conduit (227) adapted to fluidly connect the plurality of gas tanks (221, 222, 223) to a device (210) for regulating a gas delivery. Further, the gas bank means (220) includes a low pressure conduit (228) adapted to fluidly connect the plurality of gas tanks (221, 222, 223) to the gas dispensing device (210). In addition, the gas tank device (220) has a plurality of valve devices (224, 225, 226). In this case, a respective valve device (224, 225, 226) is associated with a gas container (221, 222, 223). In this case, each valve device (224, 225, 226) is designed to close the associated gas container (221, 222, 223) in a first valve position, in a second valve position, the associated gas container (221, 222, 223) fluidly with the high pressure line ( 227) and in a third valve position to fluidly couple the associated gas container (221, 222, 223) to the low pressure line (228).

Description

State of the art

The invention is based on a device or a method according to the preamble of the independent claims. The subject of the present invention is also a computer program.

Natural gas tanks for mobile applications can often store natural gas under pressure. The gas can be partially removed by pressure from a tank. If the pressure in the tank has dropped to a system pressure, the remaining natural gas can usually no longer be removed from the tank without additional means, such as a compressor. In some gas-powered vehicles, instead of a large natural gas tank, several small, z. B. four tanks are used.

Disclosure of the invention

Against this background, with the approach presented here, a method, furthermore a control unit, which uses this method, and finally a corresponding computer program according to the main claims are presented. The measures listed in the dependent claims advantageous refinements and improvements of the independent claim device are possible.

According to embodiments of the present invention, in particular for gas flow control and residual emptying of gas tanks, in particular for vehicles, a venturi nozzle can be used. In other words, for example, a Bernoulli Venturi valve for emptying natural gas tanks and a tuned tank management method can be provided. In this case, in particular the venturi vacuum pump principle as well as a coordinated interconnection or connection of several gas tanks can be used.

Advantageously, according to embodiments of the present invention, it is possible to obtain without further active components, e.g. As compressors or the like, in several existing tanks individual tanks below a system pressure to further empty. Thus, it can be prevented in particular that a tank after opening and emptying via a pressure regulating valve up to the system pressure then only can be further emptied actively, for example via compressors. Rather, according to embodiments of the present invention, a stored energy or a pressure in a tank can be used to further empty at least one further tank, and can therefore be worked without further compression energy.

A gas tank device for storing gas as fuel for a vehicle is presented, the gas tank device having the following features:
a plurality of gas tanks for storing gas;
a high-pressure line configured to fluidly connect the plurality of gas containers to a gas discharge regulating device;
a low pressure line configured to fluidly connect the plurality of gas containers to the gas discharge regulating device; and
a plurality of valve devices, wherein each valve device is associated with a gas container, wherein each valve device is designed to close the associated gas container in a first valve position, to fluidically couple the associated gas container with the high pressure line in a second valve position and in a third valve position associated gas tank to couple fluidly with the low pressure line.

The gas tank device can be arranged, for example, in a vehicle, in particular a motor vehicle, for example a road-bound vehicle, such as a passenger car, in a commercial vehicle or the like. The gas may be, in particular, natural gas. The valve means may comprise or constitute a functionality of multiway valves. In this case, each valve device may have a multi-way valve or, for example, two simple valves. The gas containers can also be referred to as gas tanks. The high pressure line and the low pressure line can also be referred to as so-called rails. The plurality of gas containers may be connected in parallel between the high pressure line and the low pressure line.

According to one embodiment, the valve devices may be designed as normally closed valves. Such an embodiment has the advantage that gas contained in the gas containers can remain safely stored even in case of malfunction or the like.

Also, in at least one of the plurality of gas containers, an adsorbent material for adsorbing gas may be arranged. Such an embodiment offers the advantage that in these gas containers, a storage pressure can be reduced, thus also allowing a freer design with regard to container shapes.

Furthermore, at least two different adsorbent materials for adsorbing gas may be arranged in different gas containers of the plurality of gas containers. Such an embodiment offers the advantage that a residual emptying of gas containers, in which a first absorbent material is arranged, using the pressure energy of a further gas container, in which a second absorbent material is arranged, can still be facilitated and increased.

An apparatus for regulating a gas output from an embodiment of the aforementioned gas-tank device to a gas consumer device is also presented, the device having the following features:
a high pressure inlet for admitting a first volume of gas flow from the high pressure line, the high pressure inlet being coupleable or coupled to the high pressure line;
a low pressure inlet for admitting a second gas flow from the low pressure conduit, the low pressure inlet being coupleable or coupled to the low pressure conduit;
an outlet for discharging a third gas volume flow having controllable proportions of the first gas volume flow and additionally or alternatively the second gas volume flow to the gas consuming device; and
a flow channel having a first end portion, a second end portion facing away from the first end portion, and a middle portion disposed between the two end portions, the high pressure inlet disposed in the first end portion, the outlet disposed in the second end portion, and the low pressure inlet disposed in the central portion is, wherein a flow cross-section of the flow channel in the central portion is minimal.

The regulating device may also be referred to as a pressure regulating valve or as a pressure regulating valve device. The flow channel may be elongated, in particular with a main axis of extension. In this case, the high-pressure inlet and the outlet can be arranged on the main extension axis. The flow cross-section of the flow channel can narrow from the end portion to the central portion towards a minimum flow area. In the third gas volume flow, a proportion of the first gas volume flow can be between 0 and 100 percent and additionally or alternatively, a proportion of the second gas volume flow can be between 0 and 100 percent. The regulating device may be used or used in conjunction with an embodiment of the aforementioned gas-feeding device to regulate a gas delivery, and in particular to adjust a pressure at the outlet or a pressure of the third gas flow. The gas consumer device may be a motor, a drive device or the like of the vehicle.

According to one embodiment, the flow channel may be formed with the central portion as a venturi. Such an embodiment offers the advantage that a residual emptying of gas containers can be realized under a system pressure using the pressure in a gas container filled above the system pressure in a reliable, energy-saving, effective and structurally simple manner.

There is further provided a method for controlling a gas delivery for an embodiment of a gas tank system referred to below, the method comprising the following step:
Driving the valve means of the gas-tank means to effect the third gas volume flow from controllable portions of the first gas volume flow and additionally or alternatively the second gas volume flow.

This method can be implemented, for example, in software or hardware or in a mixed form of software and hardware, for example in a control unit. Also, this method may be practiced in conjunction with an embodiment of the aforementioned apparatus for regulating and in conjunction with an embodiment of the aforementioned gas bench apparatus.

According to one embodiment, in the step of the activation, at least one first valve device which is assigned to a first gas container, which has a gas pressure below a limit value, can be put into the third valve position. In this case, a second valve device, which is assigned to a second gas container which has a gas pressure above the limit value, can be set in the second valve position. In this case, the limit value may represent, for example, a system pressure of the gas tank system in the third gas volume flow and additionally or alternatively a system pressure of the gas consumer device. Such an embodiment offers the advantage that at least one low pressure gas container can be further deflated or emptied using a high pressure gas container.

Further, the method may include a step of adjusting the first volume of gas flow from the high pressure inlet into the central portion of the apparatus and additionally or alternatively the second volume of gas flow from the low pressure inlet into the central portion of the apparatus using at least one valve. That, at least a valve may be part of the device or arranged separately from the device in at least one conduit. Such an embodiment offers the advantage that a gas flow through the device for regulation, thus also the third volume flow, can be precisely and reliably controlled or adjusted.

The approach presented here also creates a control unit which is designed to execute, to control or to implement the steps of a variant of a method presented here in corresponding devices. Also by this embodiment of the invention in the form of a control device, the object underlying the invention can be achieved quickly and efficiently.

In the present case, a control device can be understood as meaning an electrical device which processes sensor signals and outputs control and / or data signals in dependence thereon. The control unit may have an interface, which may be formed in hardware and / or software. In the case of a hardware-based embodiment, the interfaces can be part of a so-called system ASIC, for example, which contains various functions of the control unit. However, it is also possible that the interfaces are their own integrated circuits or at least partially consist of discrete components. In a software training, the interfaces may be software modules that are present, for example, on a microcontroller in addition to other software modules.

A gas tank system is also presented which has the following features:
an embodiment of the aforementioned Gastankeinrichtung; and
an embodiment of the aforesaid gas dispensing device for the gas supply device, wherein the high pressure inlet is coupled to the high pressure line, the low pressure inlet being coupled to the low pressure line.

The gas tank system may be configured to be coupled or coupled to the outlet of the device with an interface to the gas consumer device.

According to one embodiment, the gas tank system may comprise a first valve for adjusting the first gas volume flow from the high pressure inlet into the central portion of the device and additionally or alternatively a second valve for adjusting the second gas volume flow from the low pressure inlet into the central portion of the device. In this case, the first valve may be designed as a normally closed valve. The second valve may be designed as a check valve. The first valve and additionally or alternatively the second valve may be arranged in the device. Such an embodiment offers the advantage that the gas volume flows can be controlled or adjusted in a secure and exact manner.

Also, the gas tank system may comprise an embodiment of the above-mentioned control unit, which signal transmission capable with the valve means of Gastankeinrichtung and additionally or alternatively may be connected to at least one valve of the device. Such an embodiment offers the advantage that the gas delivery of the gas tank system can be controlled in a simple, energy-saving and reliable manner.

Also of advantage is a computer program product or computer program with program code which can be stored on a machine-readable carrier or storage medium such as a semiconductor memory, a hard disk memory or an optical memory and for carrying out, implementing and / or controlling the steps of the method according to one of the embodiments described above is used, especially when the program product or program is executed on a computer or a device.

Embodiments of the invention are illustrated in the drawings and explained in more detail in the following description. It shows:

1 a diagram of a capacity of gas tanks;

2 a schematic representation of a gas tank system according to an embodiment;

3 a schematic representation of an active principle of a gas tank system according to an embodiment;

4 a schematic sectional view of a device according to an embodiment;

5 a diagram of a pressure profile along the flow channel of the device 4 ;

6 a schematic representation of a vehicle with a gas tank system according to an embodiment; and

7 a flowchart of a method according to an embodiment.

In the following description of favorable embodiments of the present invention are for the in the various figures illustrated and similar elements used the same or similar reference numerals, wherein a repeated description of these elements is omitted.

1 shows a diagram of a capacity of gas tanks. In this case, a pressure P stored gas is plotted on the abscissa axis in the diagram, wherein on the ordinate axis, a quantity or a volume V stored gas is plotted. Furthermore, with P _min, a minimum pressure or system pressure or self-discharge pressure (depletion pressure) taking into account a system pressure is shown. Depletion pressure means a system pressure as pressure up to which a gas tank can be emptied. In addition, P _max indicates a maximum pressure in the gas tank.

A first graph 110 represents an isotherm for a CNG tank (CNG = Compressed Natural Gas). The first graph runs 110 linear. A second graph 120 , a third graph 130 and a fourth graph 140 represent isotherms for ANG (adsorbed natural gas) tanks. The second graph 120 , the third graph 130 and the fourth graph 140 are nonlinear.

For the second graph 120 , the third graph 130 and the fourth graph 140 are also respective value ranges 125 . 135 and 145 given for quantities or volumes between P _min and P _max .

For example, some typical tank systems that have CNG tanks have refueling pressures of 250 bar and the system pressure is, for example, 5 to 20 bar. ANG systems are also filled at 250 bar, for example, or at a low pressure of, for example, 30 to 50 bar in order to design a tank shape more freely. For CNG tanks, the capacity increases linearly with the pressure P, ie the higher the tank pressure, the more natural gas is taken up by the tank, as shown by the graph 110 is apparent. For ANG tanks, the capacity increases non-linearly, ie at low pressures, the increase in the graphs 120 . 130 and 140 steep, shallower at high pressures. The graphs 120 . 130 and 140 show the course of tank capacities of ANG tanks with different adsorbent materials. Especially for adsorbent materials with the graph 130 a low system pressure may be important. In order to make good use of a tank capacity, it is advantageous to empty the tank as far as possible to a low pressure, since in the case of ANG tanks in particular, this is the highest capacity lift. However, a lowest self-draining pressure is limited by the system pressure or the depletion pressure P _min down. Future injection concepts could also cause an increase in the system pressure and thus the depletion pressure P _min .

2 shows a schematic representation of a gas tank system 200 according to an embodiment. The gas tank system 200 is designed to store and deliver gas as fuel for a vehicle. This shows the gas tank system 200 a regulation device 210 or device 210 for regulating a gas delivery and a gas supply device 220 on.

Here is the regulatory device 210 configured to the gas discharge from the gas tank device 220 to regulate to a gas consumer device. The regulation device 210 works with the Bernoulli Venturi effect. According to the in 2 illustrated embodiment, the regulating device 210 designed as a pressure control valve with the Venturi pump. Here is the regulatory device 210 on the output side, for example, with the gas consumer device coupled. The gas consumer device may for example have injectors of an engine. On the regulator 210 is hereinafter referred to in particular with reference to 4 discussed in more detail.

The gas tank facility 220 is designed to store gas as fuel for a vehicle. The gas tank facility 220 and the regulating device 210 are fluidly coupled together. The gas tank facility 220 has a plurality of gas containers 221 . 222 and 223 or gas tanks 221 . 222 and 223 for storing gas, a plurality of valve means 224 . 225 and 226 , a high pressure line 227 and a low pressure line 228 on.

According to the in 2 illustrated embodiment, the gas tank device 220 by way of example only three gas containers 221 . 222 and 223 and by way of example only three valve devices 224 . 225 and 226 on. Each of the gas tanks 221 . 222 and 223 is a valve device 224 . 225 respectively. 226 assigned. This is a first gas container 221 a first valve device 224 assigned, is a second gas container 222 a second valve device 225 assigned and is a third gas container 223 a third valve device 226 assigned. The gas containers 221 . 222 and 223 with the respective associated valve devices 224 . 225 and 226 are here between the high pressure line 227 and the low pressure line 228 connected in parallel.

In 2 is through points between the second valve device 225 and the third gas container 223 symbolically illustrates that the gas tank facility 220 according to another embodiment, at least one further gas container and at least one further valve device may have.

The high pressure line 227 is designed to be the gas container 221 . 222 and 223 fluidic with the regulator 210 connect to. The high pressure line 227 For example, it can deliver a pressure of 10 to 250 bar. The low pressure line 228 is designed to be the gas container 221 . 222 and 223 fluidic with the regulator 210 connect to. The low pressure line 228 For example, it can deliver a pressure of up to 10 bar.

The valve devices 224 . 225 and 226 are each between the associated gas containers 221 . 222 respectively. 223 and the high pressure line 227 as well as the low pressure line 228 connected. Each of the valve devices 224 . 225 and 226 is designed to be in a first valve position the associated gas container 221 . 222 respectively. 223 to close, in a second valve position the associated gas container 221 . 222 respectively. 223 fluidic with the high pressure line 227 to couple and in a third valve position the associated gas tank 221 . 222 respectively. 223 fluidic with the low pressure line 228 to pair. According to the in 2 illustrated embodiment, each of the valve devices 224 . 225 and 226 For example, designed as an active 3/3-way valve with blocking position. In other words, here are the valve devices 224 . 225 and 226 designed as normally closed valves.

According to one embodiment, in at least one of the plurality of gas containers 221 . 222 and 223 an adsorbent material arranged to adsorb gas. Optionally, in different gas containers, the plurality of gas containers 221 . 222 and 223 arranged at least two different adsorbent materials for adsorbing gas.

In other words, shows 2 a schematic representation of the tank system or gas tank system 200 , consisting of tanks or gas tanks 221 . 222 and 223 , Multi-way valves or valve devices 224 . 225 and 226 , Rails or high-pressure line 227 as well as low pressure line 228 , further lines and regulation device 210 or pressure control valve with integrated venturi pump. The tank system 210 can tanks 221 . 222 and 223 having different sizes or shapes. According to the in 2 illustrated embodiment, the tanks 221 . 222 and 223 each one multi-way valve 224 . 225 and 226 on to lock the gas content, with a secure seal can be achieved by normally closed state, or gas to the high pressure line 227 or to the high pressure rail or to the low pressure line 228 or to the low-pressure rail. The two rails, ie the high pressure line 227 and the low pressure line 228 , are with the regulator 210 or the pressure control valve connected via other lines. The desired system pressure, z. B. 10 bar, is via the regulating device 210 set. In operation, the gas canisters 221 . 222 and 223 be emptied one after the other. Achieved a gas container, z. B. the second gas container 222 , a pressure less than the system pressure, z. B. P _tank <10 bar, then the second valve device 225 on the low-pressure rail 228 connected. Furthermore, a full gas container, z. B is the first gas container 221 , on the high-pressure rail 227 connected. Now the regulator can 210 or the pressure control valve with integrated Venturi pump the second gas tank 222 continue to empty. The second gas container 222 is sucked empty by the Venturi effect.

3 shows a schematic representation of an active principle of a gas tank system 200 according to an embodiment. The gas tank system 200 is similar to the gas tank system 2 executed. Shown are from the gas tank system 200 while a regulating device 210 using the Bernoulli Venturi effect, and a gas station facility 220 with a first gas container 221 , in which a pressure is greater than a system pressure, and a second gas container 222 , in which a pressure is approximately equal to the system pressure. In other words, the first gas container 221 be referred to as "full", wherein the second gas container 222 can be referred to as "empty". Further, there is still a gas flow direction on an exit side of the regulator 210 to a gas consumer device, such as a motor out. In other words, shows 3 a schematic representation of a basic principle of a Venturi pump in the gas tank system 200 or the basic principle without pressure control valve of the Venturi pump with two gas tanks 221 and 222 ,

4 shows a schematic sectional view of a regulating device 210 according to an embodiment. At the regulator 210 it is the regulator 2 respectively. 3 or a similar regulation device. Also, the regulator is 210 a device for regulating a gas delivery for the gas tank device 2 respectively. 3 or a similar gas station device.

The regulation device 210 has a high pressure inlet 411 for admitting a first gas volume flow from the high pressure line of the gas tank device. This is the high pressure inlet 411 Coupled or coupled with the high pressure line. Also, the regulator device 210 a low pressure inlet 412 to admit one second gas flow from the low pressure line of the gas tank device. Here is the low pressure inlet 412 Coupled or coupled with the low pressure line. The regulation device 210 also has an outlet 413 for discharging a third gas volume flow having controllable proportions of the first gas volume flow and / or the second gas volume flow to a gas consumer device.

In addition, the regulator device 210 a flow channel having a first end portion 414 one of the first end portion 414 remote, second end portion 415 and one between the two end portions 414 and 415 arranged middle section 416 on. Here is the high pressure inlet 411 in the first end section 414 arranged. The outlet 413 is in the second end portion 415 arranged. The low pressure inlet 412 is in the middle section 416 arranged. A flow cross-section of the flow channel is in the middle section 416 minimal. In other words, the flow cross-section of the flow channel tapers from the first end portion 414 to the middle section 416 towards and extends from the middle section 416 to the second end portion 415 back again. The low pressure inlet opens 412 in the middle section 416 in the flow channel. Thus, the regulation device functions 210 as a venturi nozzle. The flow channel is according to the in 4 illustrated embodiment further between the central portion 416 and the second end portion 415 settled.

Relating to an application of the regulating device 210 in the gas tank system 2 is the high pressure inlet 411 coupled or coupled to the high pressure line, wherein the low pressure inlet 412 can be coupled or coupled with the low pressure line.

According to the in 4 shown and described embodiment, the regulating device 210 Further, a first valve 432 . 434 . 436 and 438 for adjusting the first gas volume flow from the high pressure inlet 411 in the middle section 416 and a second valve 440 for adjusting the second gas volume flow from the low pressure inlet 412 in the middle section 416 on. In this case, the first valve 432 . 434 . 436 . 438 a ball 432 , a needle 434 , an electric coil 436 and an anchor 438 on. The ball 432 is in the first end section 414 arranged the flow channel. The needle 434 extends from the ball 432 to the anchor 438 wherein the armature is disposed in the second end portion of the flow channel. In this case, the unwound portion of the second end portion acts 415 as a stop for the anchor 438 wherein a transition section from the first end section 414 to the middle section 416 as a stop for the ball 432 acts. The sink 436 is also in the second end section 415 arranged. The second valve 440 is between the low pressure inlet 412 and the middle section 416 arranged.

Furthermore, in 4 also pressure chambers P1, P2, P3 and P4 shown. A first pressure chamber P1 in the regulator 210 extends between the high pressure inlet 411 and the middle section 416 or the ball 432 of the first valve 432 . 434 . 436 . 438 in other words, in the first end section 414 , A second pressure space P2 extends between the second valve 440 and the middle section 416 , A third pressure space P3 extends between the central portion 416 and the outlet 413 in other words, in the second end section 415 , A fourth pressure space P4 extends between the low pressure inlet 412 and the second valve 440 ,

In other words, shows 4 a schematic representation of a pressure control valve with integrated Venturi nozzle as a regulating device 210 or a possible arrangement of the pressure regulating valve and the Venturi pump for the regulating device 210 , The sink 436 controls when energized by the movement of the ball 432 an opening cross-section of the first valve or pressure control valve. Will the coil 436 energized, magnetic forces act on the armature 438 , If the magnetic force exceeds the closing forces by a pressure in the first pressure chamber P1 and in 4 indicated spring, so will the ball 432 over the needle 434 moves and opens the first valve. Due to high flow velocity in the seat or first end section 414 and in the flow channel below the seat, the middle section 416 , the static pressure in the second pressure chamber P2 drops below the system pressure in the third pressure chamber P3. If the pressure in the second pressure chamber P2 is smaller than in the fourth pressure chamber P4, the second valve designed as a check valve opens 440 and gas can be sucked from the fourth pressure chamber P4 and led to the third pressure chamber P3.

5 shows a diagram of a pressure curve along the flow channel of the device 4 , In this case, in the diagram on the abscissa axis, a position along a valve axis z is plotted, wherein a pressure P is plotted on the ordinate axis. A graph 510 represents a curve of the pressure P during a movement along the valve axis z from the first pressure chamber P1 via the second pressure chamber P2 to the third pressure chamber [0-9] [az]. In other words, shows 5 a schematic representation of the static pressure curve over the valve axis z. Here, the pressure in the second pressure chamber P2 is between a high pressure in the first pressure chamber P1 and a low pressure in the third pressure chamber P3.

6 shows a schematic representation of a vehicle 600 with a gas tank system 200 according to an embodiment. The vehicle 600 indicates the gas tank system 200 and a gas consumer device 610 on. This corresponds to the gas tank system 200 the gas tank system 2 with the exception that in accordance with the 6 illustrated embodiment, the gas tank system 200 Furthermore, a control unit 650 having. Here is the control unit 650 signal transmitting capability with the valve devices 224 . 225 and 226 the gas tank device 220 and with the regulator 210 connected. The control unit 650 is designed, for example, to control signals to the valve devices 224 . 225 and 226 as well as the regulation device 210 issue. Also, the controller can 650 be configured to pressure values of pressures in the gas containers 221 . 222 and 223 receive or read. In particular, the control unit 650 in this case capable of signal transmission with the first valve of the regulating device 210 be connected. The control unit 650 is arranged to provide a method of controlling gas delivery for a gas tank system such as the method 7 perform. The gas consumer device 610 is at the outlet of the regulator 210 connected.

7 shows a flowchart of a method 700 for controlling according to an embodiment. The procedure 700 is executable to control a gas delivery for a gas tank system. Here's the procedure 700 for controlling in conjunction with a controller with the controller off 6 executable. The procedure 700 to control is executable to the gas delivery of the gas tank system 2 . 3 respectively. 6 or a similar gas tank system. Also, that's the procedure 700 for controlling thus in connection with the gas tank system 2 . 3 respectively. 6 or a similar gas tank system and in conjunction with the regulator 2 . 3 . 4 respectively. 6 or a similar regulatory device executable.

The procedure 700 to control has one step 710 the driving of the valve devices of the gas tank device in order to effect the third gas volume flow from controllable portions of the first gas volume flow and / or of the second gas volume flow. For example, it is in step 710 at least one first valve device, which is assigned to a first gas container having a gas pressure below a threshold value, is set in the third valve position, wherein a second valve device, which is assigned to a second gas container, which has a gas pressure above the limit value, into which second valve position is offset.

According to one embodiment, the method 700 to control a step as well 720 adjusting the first gas volume flow from the high pressure inlet into the central portion of the device and / or the second gas volume flow from the low pressure inlet into the central portion of the device using at least one valve. This is the step 720 adjusting before, during and / or after the step 710 of driving, even if this is in 7 is shown differently.

With reference to the 1 to 7 In the following, further exemplary embodiments and backgrounds are explained in other words. It may be for the gas tank system 200 a tank management in the control unit 650 be executed, the valves 224 . 225 . 226 and 432 . 434 . 436 . 438 be regulated in order to make optimum use of the Bernoulli Venturi effect. In principle, in this case in particular a gas tank or tank can be emptied only up to the system pressure P _min . Therefore, it can be used in this another adsorbent material than in the other tanks. Savings in the adsorbent material can thus be realized for the other tanks without sacrificing drainability. Regarding thermal management, it can be cheap to use the ANG tanks 221 . 222 . 223 equipped with different adsorbent materials. At high gas demand desorption leads to a cooling of the material, which can drop the gas pressure. For this purpose, the adsorbent materials are vulnerable differently. For example, tank management could withhold the tank with a cold-tolerant adsorbent material for fast trips. In addition, the Bernoulli Venturi effect could also be exploited here to further lower a gas tank's operating temperature down when aspirating gas. Adsorbent materials differ in addition to aging stability over a slope of the isotherms 120 . 130 . 140 at low pressures. This differentiation could for example be equalized for the tanks, by means of the regulating device 210 and the gas tank facility 220 be further emptied. The invention can be used for example in natural gas tank systems for cars or commercial vehicles. The Bernoulli Venturi effect can be used particularly advantageously with ANG tanks.

If an exemplary embodiment comprises a "and / or" link between a first feature and a second feature, then this is to be read so that the embodiment according to one embodiment, both the first feature and the second feature and according to another embodiment either only first feature or only the second feature.

Claims (15)

Gas facility ( 220 ) for storing gas as fuel for a vehicle ( 600 ), whereby the gas equipment ( 220 ) comprises: a plurality of gas containers ( 221 . 222 . 223 ) for storing gas; a high-pressure line ( 227 ), which is designed to hold the plurality of gas containers ( 221 . 222 . 223 ) fluidly with a device ( 210 ) to regulate a gas delivery; a low-pressure line ( 228 ), which is designed to hold the plurality of gas containers ( 221 . 222 . 223 ) fluidly with the device ( 210 ) to regulate a gas delivery; and a plurality of valve devices ( 224 . 225 . 226 ), wherein in each case a valve device ( 224 . 225 . 226 ) a gas container ( 221 . 222 . 223 ), each valve device ( 224 . 225 . 226 ) is formed to in a first valve position, the associated gas container ( 221 . 222 . 223 ), in a second valve position, the associated gas container ( 221 . 222 . 223 ) fluidly with the high pressure line ( 227 ) and in a third valve position the associated gas container ( 221 . 222 . 223 ) fluidly with the low pressure line ( 228 ) to couple. Gas facility ( 220 ) according to claim 1, wherein the valve means ( 224 . 225 . 226 ) are designed as normally closed valves. Gas facility ( 220 ) according to one of the preceding claims, wherein in at least one of the plurality of gas containers ( 221 . 222 . 223 ) an adsorbent material for adsorbing gas is arranged. Gas facility ( 220 ) according to one of the preceding claims, wherein in different gas containers of the plurality of gas containers ( 221 . 222 . 223 ) at least two different adsorbent materials are arranged for adsorbing gas. Contraption ( 210 ) for regulating a gas delivery from a gas supply device ( 220 ) according to one of the preceding claims to a gas consumer device ( 610 ), the device ( 210 ) has the following features: a high-pressure inlet ( 411 ) for admitting a first gas volume flow from the high pressure line ( 227 ), the high pressure inlet ( 411 ) with the high pressure line ( 227 ) is coupled or coupled; a low pressure inlet ( 412 ) for admitting a second gas volume flow from the low-pressure line ( 228 ), the low pressure inlet ( 412 ) with the low-pressure line ( 228 ) is coupled or coupled; an outlet ( 413 ) for discharging a third gas volume flow, which has controllable fractions of the first gas volume flow and / or the second gas volume flow, to the gas consuming device ( 610 ); and a flow channel ( 414 . 415 . 416 ) with a first end section ( 414 ), one of the first end portion ( 414 ) facing away, the second end portion ( 415 ) and one between the two end sections ( 414 . 415 ) arranged middle section ( 416 ), the high pressure inlet ( 411 ) in the first end section ( 414 ), the outlet ( 413 ) in the second end portion ( 415 ) and the low pressure inlet ( 412 ) in the middle section ( 416 ), wherein a flow cross section of the flow channel ( 414 . 415 . 416 ) in the middle section ( 416 ) is minimal. Contraption ( 210 ) according to claim 5, wherein the flow channel ( 414 . 415 . 416 ) with the middle section ( 416 ) is formed as a Venturi nozzle. Procedure ( 700 ) for controlling a gas delivery for a gas tank system ( 200 ) according to one of claims 11 to 13, wherein the process ( 700 ) comprises the following step: 710 ) of the valve devices ( 224 . 225 . 226 ) of the gas facility ( 220 ) to effect the third gas volume flow of controllable portions of the first gas volume flow and / or the second gas volume flow. Procedure ( 700 ) according to claim 7, wherein in step ( 710 ) driving at least a first valve means associated with a first gas container having a gas pressure below a threshold value is set in the third valve position, a second valve means associated with a second gas container having a gas pressure above the limit value, is placed in the second valve position. Procedure ( 700 ) according to one of claims 7 to 8, with a step ( 720 ) of adjusting the first gas volume flow from the high pressure inlet ( 411 ) in the middle section ( 416 ) of the device ( 210 ) and / or the second gas volume flow from the low pressure inlet ( 412 ) in the middle section ( 416 ) of the device ( 210 ) using at least one valve ( 432 . 434 . 436 . 438 . 440 ). Control unit ( 650 ), which is set up for the procedure ( 700 ) according to one of the preceding claims. Gas tank system ( 200 ), which has the following features: a gas station facility ( 220 ) according to any one of claims 1 to 4; and a device ( 210 ) according to one of claims 5 to 6 for regulating a gas delivery for the gas supply device ( 220 ), the high pressure inlet ( 411 ) with the high pressure line ( 227 ), the low pressure inlet ( 412 ) with the low-pressure line ( 228 ) is coupled. Gas tank system ( 200 ) according to claim 11, with a first valve ( 432 . 434 . 436 . 438 ) for adjusting the first gas volume flow from the high pressure inlet ( 411 ) in the middle section ( 416 ) of the device ( 210 ) and / or a second valve ( 440 ) for adjusting the second gas volume flow from the low pressure inlet ( 412 ) in the middle section ( 416 ) of the device ( 210 ). Gas tank system ( 200 ) according to one of claims 11 to 12, with a control device ( 650 ) according to claim 10, which is capable of signal transmission with the valve devices ( 224 . 225 . 226 ) of the gas facility ( 220 ) and / or at least one valve ( 432 . 434 . 436 . 438 . 440 ) of the device ( 210 ) connected is. Computer program adapted to perform the procedure ( 700 ) according to one of the preceding claims. A machine readable storage medium storing the computer program of claim 14.

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