Mobile carbon dioxide capture device

Abstract

The carbon dioxide recovered by the carbon dioxide capture device is used to suppress fires in mobile vehicles. [Solution] The carbon dioxide recovery device 2 of the mobile body 1 comprises an engine 10, a fuel tank 20 in which fuel F is stored, a fuel pipe 30 connecting the engine 10 and the fuel tank 20, a carbon dioxide recovery unit 40 for recovering carbon dioxide CO2, a carbon dioxide tank 50 in which the carbon dioxide CO2 recovered by the carbon dioxide recovery unit 40 is stored, a carbon dioxide pipe 60 connected to the carbon dioxide tank 50 and extending along the fuel pipe 30, an injection valve 70 for opening and closing an injection port 61 provided in the carbon dioxide pipe 60, and a controller 90 for controlling the injection valve 70. The controller 90 operates the injection valve 70 to open the injection port 61, thereby injecting carbon dioxide CO2 from the carbon dioxide tank 50 to the fuel pipe 30 via the carbon dioxide pipe 60.

Description

Technical Field

[0004] , ,

[0006] , ,

[0005] , ,

[0007] , ,

[0001] The present disclosure relates to a carbon dioxide recovery device for a moving body.

Background Art

[0002] Patent Document 1 discloses a carbon dioxide recovery device for a vehicle. The carbon dioxide recovery device introduces ambient outside air during travel and captures and recovers carbon dioxide in the introduced outside air. The vehicle includes a detection means for detecting the carbon dioxide concentration in the outside air, a notification means for notifying the detected carbon dioxide concentration to the passengers, and a switching operation unit that the passengers operate to start and stop the carbon dioxide recovery device.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] By the way, due to accidents such as collisions, a vehicle may catch fire. If the oxygen concentration at the ignition point is high, combustion is promoted, leading to a vehicle fire. Here, carbon dioxide has the effect of reducing the oxygen concentration. Carbon dioxide contributes to suppressing vehicle fires.

[0005] Such an action of carbon dioxide can also be applied to suppressing fires in moving bodies other than vehicles.

[0006] An object of the present disclosure is to suppress a fire in a moving body by using carbon dioxide recovered by a carbon dioxide recovery device.

Means for Solving the Problems

[0007] The mobile carbon dioxide recovery device according to this disclosure comprises an engine, a fuel tank for storing fuel, a fuel pipe connecting the engine and the fuel tank, a carbon dioxide recovery unit for recovering carbon dioxide, a carbon dioxide tank for storing the carbon dioxide recovered by the carbon dioxide recovery unit, a carbon dioxide pipe connected to the carbon dioxide tank and extending along the fuel pipe, an injection valve for opening and closing an injection port provided in the carbon dioxide pipe, and a controller for controlling the injection valve, wherein the controller operates the injection valve to open the injection port, thereby injecting carbon dioxide from the carbon dioxide tank through the carbon dioxide pipe into the fuel pipe.

[0008] Accidents such as collisions can cause mobile vehicles to ignite. If the oxygen concentration at the point of ignition is high, combustion is accelerated, leading to a fire in the mobile vehicle. Carbon dioxide has the effect of lowering the oxygen concentration. Therefore, carbon dioxide contributes to suppressing fires in mobile vehicles.

[0009] The carbon dioxide captured by the carbon dioxide capture unit is stored in a carbon dioxide tank. When the mobile vehicle catches fire, the injection valve is activated and the nozzle of the carbon dioxide piping is opened, and carbon dioxide is injected from the carbon dioxide tank through the carbon dioxide piping into the fuel piping. Because the area around the fuel piping is placed in a carbon dioxide atmosphere, ignition of the fuel is suppressed, and the fire in the mobile vehicle is contained.

[0010] In summary, the carbon dioxide recovered by the carbon dioxide recovery device can be used to suppress fires in mobile vehicles.

[0011] A mobile carbon dioxide recovery device according to one embodiment includes a detector for detecting ignition in the mobile body, and the controller activates the injection valve upon receiving a detection signal from the detector.

[0012] The injection of carbon dioxide from the nozzle by the injection valve can be performed automatically based on a detection signal from a detector.

[0013] A carbon dioxide recovery device for a mobile body according to one embodiment comprises a plurality of injection valves arranged along the fuel piping, the carbon dioxide piping is provided with a plurality of injection ports arranged along the fuel piping, the detector includes a plurality of smoke sensors arranged along the fuel piping that detect smoke generated on the mobile body, and the controller identifies a smoke sensor among the plurality of smoke sensors that does not actually detect smoke, and operates the injection valve to close the injection port among the plurality of injection ports that is closest to the identified smoke sensor.

[0014] By closing the nozzle closest to a smoke sensor that is not actually detecting smoke using a spray valve, it is possible to concentrate the injection of carbon dioxide from the nozzle near the point of ignition.

[0015] In a mobile carbon dioxide recovery device according to one embodiment, the carbon dioxide tank is detachable from the carbon dioxide piping, and an on / off valve is provided at the connection point between the carbon dioxide tank and the carbon dioxide piping.

[0016] By closing the shut-off valve when the carbon dioxide tank is removed from the carbon dioxide piping, it is possible to prevent the carbon dioxide stored in the tank from leaking to the outside.

[0017] In a mobile carbon dioxide recovery device according to one embodiment, the carbon dioxide piping extends parallel to the fuel piping.

[0018] This makes it easier to extend carbon dioxide piping along fuel piping.

[0019] In a mobile carbon dioxide recovery device according to one embodiment, the carbon dioxide recovery unit recovers the carbon dioxide in the exhaust gas discharged from the engine.

[0020] Since it captures carbon dioxide from the exhaust gas emitted from the engine, it can efficiently capture carbon dioxide while the vehicle is in motion.

[0021] In the carbon dioxide recovery device for a moving body according to an embodiment, the injection port faces the fuel pipe.

[0022] It becomes easier to supply the carbon dioxide injected from the injection port of the carbon dioxide pipe to the periphery of the fuel pipe. It becomes easier to place the periphery of the fuel pipe in a carbon dioxide atmosphere.

[0023] In the carbon dioxide recovery device for a moving body according to an embodiment, the moving body is a vehicle.

[0024] The carbon dioxide recovered by the carbon dioxide recovery device can be used to suppress a fire in the vehicle.

Advantages of the Invention

[0025] According to the present disclosure, the fire of a moving body can be suppressed by using the carbon dioxide recovered by the carbon dioxide recovery device.

Brief Description of the Drawings

[0026] [Figure 1] FIG. 1 shows a carbon dioxide recovery device for a vehicle. [Figure 2] FIG. 2 shows the recovery of carbon dioxide in exhaust gas. [Figure 3] FIG. 3 graphically shows the pressure dependence and temperature dependence of the carbon dioxide adsorption amount in the adsorbent of the carbon dioxide recovery unit. [Figure 4] FIG. 4 shows the positional relationship between the fuel pipe and the carbon dioxide pipe. [Figure 5] FIG. 5 shows the removal of the carbon dioxide tank from the carbon dioxide pipe. [Figure 6] FIG. 6 shows a control block diagram of the controller. [Figure 7] FIG. 7 shows a flowchart.

Modes for Carrying Out the Invention

[0027] Embodiments of the present disclosure will be described in detail below with reference to the drawings. The following description of preferred embodiments is essentially illustrative and is not intended to limit the present disclosure, its applications or uses in any way. Front, rear, left, right, up, and down are based on the viewpoint of an occupant in vehicle 1.

[0028] (Carbon dioxide capture device) Figure 1 shows the carbon dioxide capture device 2 of vehicle 1. Figure 2 shows the capture of carbon dioxide (CO2) from exhaust gas E. The carbon dioxide capture device 2 is mounted on vehicle 1, which is a mobile vehicle. Vehicle 1 is an example of a mobile vehicle. The carbon dioxide capture device 2 takes in exhaust gas E emitted from engine 10 and captures and recovers carbon dioxide (CO2) from the introduced exhaust gas E.

[0029] As shown in Figures 1 and 2, the carbon dioxide recovery device 2 of the vehicle 1 comprises an engine 10, a fuel tank 20, fuel piping 30, a carbon dioxide recovery unit 40, a carbon dioxide tank 50, carbon dioxide piping 60, a plurality of injection valves 70, an on / off valve 75, a detector 80, and a controller 90.

[0030] (engine) As shown in Figure 1, the engine 10 is located in the engine compartment at the front of the vehicle 1. The engine compartment is separated from the passenger compartment by a dashboard panel. The engine 10 is the power source for the vehicle 1 and rotates the wheels via the transmission and the like.

[0031] As shown in Figure 2, exhaust gas E is discharged from the combustion chamber 11 of the engine 10. The exhaust gas E contains carbon dioxide (CO2). The exhaust gas E discharged from the engine 10 is sent to the rear of the vehicle 1 through the exhaust pipe 3 and is finally released into the atmosphere via the tailpipe 4. The vehicle 1 includes floor panels that form the floor surface of the passenger compartment. The exhaust pipe 3 is located below the floor panels. A carbon dioxide recovery unit 40, described later, is provided in the middle of the exhaust pipe 3, specifically between the engine 10 and the tailpipe 4 in the exhaust pipe 3.

[0032] (Fuel tank) As shown in Figure 1, the fuel tank 20 is located at the rear of the vehicle 1. The fuel tank 20 is located below the floor panel. Fuel F is stored in the fuel tank 20. Fuel F is, for example, gasoline.

[0033] (fuel piping) As shown in Figure 1, the fuel pipe 30 is located below the floor panel. The fuel pipe 30 is located between the engine 10 and the fuel tank 20 in the longitudinal direction. The axial direction of the central axis of the fuel pipe 30 extends in the longitudinal direction. The fuel pipe 30 is cylindrical.

[0034] The fuel pipe 30 connects the engine 10 and the fuel tank 20. The front end of the fuel pipe 30 is connected to the engine 10. The rear end of the fuel pipe 30 is connected to the fuel tank 20. The fuel F stored in the fuel tank 20 is supplied to the combustion chamber 11 of the engine 10 through the fuel pipe 30.

[0035] (Carbon dioxide capture unit) As shown in Figure 2, the carbon dioxide capture unit 40 is installed in the middle of the exhaust pipe 3, specifically between the engine 10 and the tailpipe 4 in the exhaust pipe 3. The exhaust gas E flowing through the exhaust pipe 3 passes through the carbon dioxide capture unit 40. The carbon dioxide capture unit 40 captures carbon dioxide CO2. Specifically, the carbon dioxide capture unit 40 captures carbon dioxide CO2 in the exhaust gas E discharged from the combustion chamber 11 of the engine 10.

[0036] Figure 3 shows a graph illustrating the pressure and temperature dependence of the amount of carbon dioxide (CO2) adsorbed by the adsorbent in the carbon dioxide capture unit 40. The carbon dioxide capture unit 40 includes an adsorbent. The adsorbent is, for example, granular and there are many of them.

[0037] The adsorbent adsorbs carbon dioxide (CO2). Types of adsorbents include pressure-swing type, temperature-swing type, and humidity-swing type. In this example, pressure-swing type and temperature-swing type adsorbents were used. Zeolite is an example of such an adsorbent.

[0038] In Figure 3, the horizontal axis represents the pressure of carbon dioxide (CO2) introduced into the adsorbent, and the vertical axis represents the amount of carbon dioxide (CO2) adsorbed by the adsorbent. In Figure 3, the solid line represents the case where the adsorbent is at a low temperature, and the dashed line represents the case where the adsorbent is at a high temperature.

[0039] Because the adsorbent operates on a temperature swing mechanism, under the same pressure conditions (equal pressure), it adsorbs more carbon dioxide (CO2) at lower temperatures than at higher temperatures.

[0040] Temperature-swing type adsorbents readily adsorb carbon dioxide (CO2) at low temperatures (solid line) because they adsorb more CO2 at low temperatures. At high temperatures (dashed line), temperature-swing type adsorbents readily desorb carbon dioxide (CO2) because they adsorb less CO2 at high temperatures.

[0041] Furthermore, because the adsorbent is a pressure-swing type, under the same temperature conditions (conditions where the temperature is the same), the amount of carbon dioxide (CO2) adsorbed is greater at high pressure than at low pressure.

[0042] Pressure-swing type adsorbents readily adsorb carbon dioxide (CO2) at high pressure, as they adsorb more CO2 at high pressure. Conversely, they readily desorb carbon dioxide (CO2) at low pressure, as they adsorb less CO2 at low pressure.

[0043] By adjusting the temperature and / or pressure of the exhaust gas E passing through the carbon dioxide recovery unit 40, carbon dioxide CO2 can be adsorbed onto the adsorbent or desorbed from the adsorbent.

[0044] (Carbon dioxide tank) As shown in Figure 1, the carbon dioxide tank 50 is located at the rear of the vehicle 1. The carbon dioxide tank 50 is located below the floor panel. As shown in Figure 2, the carbon dioxide capture unit 40 and the carbon dioxide tank 50 are connected by a connecting pipe 5. Carbon dioxide (CO2) desorbed from the adsorbent of the carbon dioxide capture unit 40 is introduced into the carbon dioxide tank 50 through the connecting pipe 5.

[0045] The carbon dioxide tank 50 stores the carbon dioxide (CO2) recovered by the carbon dioxide recovery unit 40. Specifically, the carbon dioxide tank 50 stores the carbon dioxide (CO2) that has been released from the adsorbent of the carbon dioxide recovery unit 40.

[0046] (Carbon dioxide piping) As shown in Figure 1, the carbon dioxide piping 60 is located below the floor panel. The carbon dioxide piping 60 is located in front of the carbon dioxide tank 50. The axial direction of the central axis of the carbon dioxide piping 60 extends in the front-to-back direction. The carbon dioxide piping 60 is cylindrical.

[0047] The carbon dioxide pipeline 60 is connected to the carbon dioxide tank 50. Specifically, the rear end of the carbon dioxide pipeline 60 is connected to the carbon dioxide tank 50. The front end of the carbon dioxide pipeline 60 is located near the front end of the fuel pipeline 30.

[0048] Figure 4 shows the positional relationship between the fuel pipe 30 and the carbon dioxide pipe 60 in an axial view. As shown in Figures 1 and 4, the carbon dioxide pipe 60 extends along the fuel pipe 30. More specifically, the carbon dioxide pipe 60 extends parallel to the fuel pipe 30. More specifically, the carbon dioxide pipe 60 extends geometrically parallel to the fuel pipe 30.

[0049] The carbon dioxide pipe 60 and the fuel pipe 30 are adjacent to each other in the left-right and / or up-down directions. Note that in Figure 1, for clarity, the carbon dioxide pipe 60 and the fuel pipe 30 are shown at different heights; however, they may be placed at the same height (or, of course, at different heights).

[0050] Multiple injection ports 61 are provided in the carbon dioxide pipe 60. The injection ports 61 penetrate the wall of the carbon dioxide pipe 60 and communicate the inside and outside of the carbon dioxide pipe 60. As shown in Figure 4, the injection ports 61 face the fuel pipe 30. The injection ports 61 are directed toward the fuel pipe 30.

[0051] As shown in Figure 1, there are multiple injection nozzles 61. The multiple injection nozzles 61 are arranged along the carbon dioxide pipe 60. That is, the multiple injection nozzles 61 are arranged along the fuel pipe 30. The multiple injection nozzles 61 are arranged along the carbon dioxide pipe 60 and the fuel pipe 30 with spacing in the axial direction (front-to-back direction).

[0052] (Injection valve) As shown in Figures 1 and 4, the injection valve 70 is installed in the carbon dioxide piping 60. More specifically, the injection valve 70 is installed at the injection port 61 of the carbon dioxide piping 60. The injection valve 70 opens and closes the injection port 61.

[0053] As shown in Figure 1, there are multiple injection valves 70 corresponding to the injection ports 61. The multiple injection valves 70 are arranged along the carbon dioxide piping 60. That is, the multiple injection valves 70 are arranged along the fuel piping 30. In detail, the multiple injection valves 70 are arranged along the carbon dioxide piping 60 and the fuel piping 30 with spacing in the axial direction (front-to-back direction).

[0054] The injection valve 70 remains stopped and its nozzle 61 is closed until it receives a command from the controller 90, which will be described later.

[0055] (Open / close valve) Figure 5 shows the removal of the carbon dioxide tank 50 from the carbon dioxide piping 60. The carbon dioxide tank 50 is detachable from the carbon dioxide piping 60. When the carbon dioxide tank 50 is removed from the carbon dioxide piping 60, the carbon dioxide piping 60 remains fixed to the vehicle 1. When the carbon dioxide tank 50 is removed from the carbon dioxide piping 60, the carbon dioxide tank 50 is also removed from the vehicle 1.

[0056] The removed carbon dioxide tank 50 is provided, for example, to a carbon dioxide capture station. The carbon dioxide (CO2) stored in the carbon dioxide tank 50 is then captured at the carbon dioxide capture station. The carbon dioxide capture station is installed, for example, at a gas station.

[0057] A shut-off valve 75 is provided at the connection point 51 between the carbon dioxide tank 50 and the carbon dioxide piping 60. The connection point 51 is the outlet point for carbon dioxide (CO2) from the carbon dioxide tank 50 to the carbon dioxide piping 60. The shut-off valve 75 opens and closes the connection point 51 of the carbon dioxide tank 50.

[0058] When the carbon dioxide tank 50 is removed from the carbon dioxide piping 60, the connection part 51 of the carbon dioxide tank 50 should be closed with the shut-off valve 75. This prevents the carbon dioxide CO2 stored in the carbon dioxide tank 50 from leaking to the outside of the tank.

[0059] When the carbon dioxide tank 50 is attached to the carbon dioxide piping 60, the connection part 51 of the carbon dioxide tank 50 should be opened using the shut-off valve 75. This allows the carbon dioxide CO2 stored in the carbon dioxide tank 50 to be supplied to the carbon dioxide piping 60. The inside of the carbon dioxide piping 60 will then be filled with carbon dioxide CO2.

[0060] (Detector) Returning to Figure 1, the detector 80 detects ignition in vehicle 1. The detector 80 detects ignition in vehicle 1 directly or indirectly. The detector 80 includes a collision sensor 81 and a plurality of smoke sensors 82. In Figure 1, the ignition process is schematically represented by G.

[0061] The collision sensor 81 detects a collision involving vehicle 1. The collision sensor 81 is located, for example, near the front side frame of vehicle 1. When the collision sensor 81 detects a collision involving vehicle 1, the airbag may deploy. When vehicle 1 collides, there is a high probability that ignition will occur in vehicle 1. The collision sensor 81 indirectly detects the ignition in vehicle 1.

[0062] There are multiple smoke sensors 82, corresponding to the injection valves 70. The multiple smoke sensors 82 are arranged along the fuel piping 30. Additionally, the multiple smoke sensors 82 are arranged along the carbon dioxide piping 60. More specifically, the multiple smoke sensors 82 are arranged along the fuel piping 30 and the carbon dioxide piping 60, spaced apart in the axial direction (front-to-back direction).

[0063] The smoke sensor 82 detects smoke generated in vehicle 1. The generation of smoke in vehicle 1 directly indicates ignition in vehicle 1. The smoke sensor 82 directly detects ignition in vehicle 1.

[0064] (controller) Figure 6 shows a control block diagram of the controller 90. The controller 90 consists of hardware such as a processor, memory, and interface, and software such as a database and control programs. As shown in Figure 6, the controller 90 is connected to the injection valve 70 and on-off valve 75 and the detector 80 (collision sensor 81 and smoke sensor 82) by wire or wireless.

[0065] When the detector 80 detects a fire in vehicle 1 (the collision sensor 81 detects a collision with vehicle 1, and / or the smoke sensor 82 detects smoke generated in vehicle 1), the detector 80 sends a detection signal Ta to the controller 90. The controller 90 receives the detection signal Ta from the detector 80.

[0066] The controller 90 controls the injection valve 70. When the controller 90 receives a detection signal Ta from the detector 80, it sends an injection signal Tb to the injection valve 70. When the injection valve 70 receives the injection signal Tb from the controller 90, it activates and opens the injection port 61 of the carbon dioxide piping 60. The controller 90 activates the injection valve 70 upon receiving a detection signal Ta from the detector 80.

[0067] Here, when the carbon dioxide tank 50 is attached to the carbon dioxide piping 60, the connection part 51 of the carbon dioxide tank 50 is opened by the shut-off valve 75. Carbon dioxide (CO2) stored in the carbon dioxide tank 50 is then supplied to the carbon dioxide piping 60. The inside of the carbon dioxide piping 60 becomes filled with carbon dioxide (CO2).

[0068] When the injection valve 70 is activated and the injection port 61 of the carbon dioxide pipe 60 is opened, the carbon dioxide CO2 that has filled the carbon dioxide pipe 60 is injected from the injection port 61 of the carbon dioxide pipe 60 into the fuel pipe 30 (see Figure 4).

[0069] In summary, the controller 90 activates the injection valve 70 to open the injection port 61 of the carbon dioxide pipe 60, thereby injecting carbon dioxide (CO2) from the carbon dioxide tank 50 through the carbon dioxide pipe 60 into the fuel pipe 30.

[0070] The controller 90 may identify one of the multiple smoke sensors 82 that is not actually detecting smoke, and may also operate the injection valve 70 to close the injection port 61 that is closest to the identified smoke sensor 82.

[0071] The controller 90 controls the on-off valve 75. The controller 90 receives an on-off command from, for example, the user and sends an on-off signal Tc to the on-off valve 75. When the on-off valve 75 receives the on-off signal Tc from the controller 90, it operates to open or close the connection 51 between the carbon dioxide tank 50 and the carbon dioxide piping 60.

[0072] (flowchart) Figure 7 shows a flowchart. Starting from the beginning, in the first step S1, the controller 90 activates the on-off valve 75 to open the connection 51 between the carbon dioxide tank 50 and the carbon dioxide piping 60. Carbon dioxide (CO2) stored in the carbon dioxide tank 50 is then supplied to the carbon dioxide piping 60. The inside of the carbon dioxide piping 60 becomes filled with carbon dioxide (CO2).

[0073] In the second step S2, the detector 80 detects ignition in vehicle 1. Specifically, the collision sensor 81 detects a collision with vehicle 1, or the smoke sensor 82 detects smoke generated in vehicle 1.

[0074] In the third step S3, the controller 90 activates all the injection valves 70 and opens all the injection ports 61. It is preferable to fully open the injection ports 61. Carbon dioxide CO2 is injected from the carbon dioxide tank 50 through the carbon dioxide piping 60 into the fuel piping 30.

[0075] In the fourth step S4, the controller 90 determines whether the smoke sensor 82 closest to the fuel tank 20 among the multiple smoke sensors 82 has actually detected smoke. If the smoke sensor 82 closest to the fuel tank 20 has not actually detected smoke, the process proceeds to the fifth step S5. If the smoke sensor 82 closest to the fuel tank 20 has actually detected smoke, the process returns to the fourth step S4.

[0076] In the fifth step S5, the injection valve 70 closest to the smoke sensor 82 that is closest to the fuel tank 20 is stopped (the injection nozzle 61 is closed).

[0077] In the sixth step S6, the controller 90 determines whether the smoke sensor 82 closest to the fuel tank 20 among the multiple smoke sensors 82 has actually detected smoke. If the smoke sensor 82 closest to the fuel tank 20 has not actually detected smoke, the process proceeds to the seventh step S7. If the smoke sensor 82 closest to the fuel tank 20 has actually detected smoke, the process returns to the sixth step S6.

[0078] In the seventh step S7, the injection valve 70 closest to the smoke sensor 82, which is the second closest to the fuel tank 20, is stopped (the injection nozzle 61 is closed).

[0079] The same procedure is performed for the smoke sensor 82 that is third closest to the fuel tank 20, the smoke sensor 82 that is fourth closest to the fuel tank 20, and so on.

[0080] In the eighth step S8, the controller 90 determines whether the smoke sensor 82 closest to the engine 10 (farthest from the fuel tank 20) ​​among the multiple smoke sensors 82 has actually detected smoke. The smoke sensor 82 closest to the engine 10 (farthest from the fuel tank 20) ​​is located, for example, in the engine compartment. If the smoke sensor 82 closest to the engine 10 (farthest from the fuel tank 20) ​​has not actually detected smoke, the process ends. If the smoke sensor 82 closest to the engine 10 (farthest from the fuel tank 20) ​​has actually detected smoke, the process returns to the eighth step S8.

[0081] In steps 4 S4 to 8 S8, the controller 90 identifies a smoke sensor 82 out of the multiple smoke sensors 82 that is not actually detecting smoke, and operates the injection valve 70 to close the injection port 61 that is closest to the identified smoke sensor 82 out of the multiple injection ports 61.

[0082] (Effects and Benefits) Vehicle 1 may catch fire as a result of an accident such as a collision. If the oxygen concentration at the point of ignition is high, combustion will be accelerated, leading to a fire in vehicle 1. Carbon dioxide (CO2) has the effect of lowering the oxygen concentration. Carbon dioxide (CO2) contributes to suppressing the fire in vehicle 1.

[0083] The carbon dioxide (CO2) recovered by the carbon dioxide recovery unit 40 is stored in the carbon dioxide tank 50. When vehicle 1 catches fire, the injection valve 70 is activated to open the injection port 61 of the carbon dioxide pipe 60, and carbon dioxide (CO2) is injected from the carbon dioxide tank 50 through the carbon dioxide pipe 60 into the fuel pipe 30. As the area around the fuel pipe 30 is placed in a carbon dioxide (CO2) atmosphere, the oxygen concentration around the fuel pipe 30 decreases. This suppresses ignition of the fuel F, thus preventing the fire in vehicle 1 from spreading.

[0084] In summary, the carbon dioxide (CO2) recovered by the carbon dioxide recovery device 2 can be used to suppress the fire in vehicle 1.

[0085] The injection of carbon dioxide (CO2) from the injection port 61 by the injection valve 70 can be performed automatically based on the detection signal Ta from the detector 80.

[0086] By closing the nozzle 61 closest to the smoke sensor 82, which does not actually detect smoke, with the injection valve 70, it is possible to concentrate the injection of carbon dioxide (CO2) from the nozzle 61 near the ignition point.

[0087] In the third step S3, all injection valves 70 are activated to open all injection ports 61. This is a safety feature designed to suppress fire in vehicle 1.

[0088] A shut-off valve 75 is provided at the connection point 51 between the carbon dioxide tank 50 and the carbon dioxide piping 60. By closing the shut-off valve 75 when the carbon dioxide tank 50 is removed from the carbon dioxide piping 60, it is possible to prevent carbon dioxide CO2 stored in the carbon dioxide tank 50 from leaking to the outside of the tank 50.

[0089] The carbon dioxide pipeline 60 runs parallel to the fuel pipeline 30. This makes it easier to extend the carbon dioxide pipeline 60 along the fuel pipeline 30.

[0090] Since carbon dioxide (CO2) is recovered from the exhaust gas E emitted from the combustion chamber 11 of the engine 10, carbon dioxide (CO2) can be efficiently recovered while the vehicle 1 is in operation.

[0091] The nozzle 61 of the carbon dioxide pipe 60 faces the fuel pipe 30. This makes it easier to supply carbon dioxide (CO2) injected from the nozzle 61 of the carbon dioxide pipe 60 to the area around the fuel pipe 30. This makes it easier to create a carbon dioxide (CO2) atmosphere around the fuel pipe 30.

[0092] Since the moving object is a vehicle, it can be particularly useful in suppressing vehicle fires.

[0093] (Other embodiments) Although this disclosure has been described above with reference to preferred embodiments, this description is not limiting, and various modifications, substitutions, or combinations are, of course, possible.

[0094] The controller 90 may activate the injection valve 70 based on a command from the user (who has detected ignition in the vehicle 1). The command from the user is given, for example, by pressing a switch located on the dashboard.

[0095] The carbon dioxide pipe 60 and the fuel pipe 30 may have a structure such as a double pipe that is coaxial with each other. In this case, the carbon dioxide pipe 60 is coaxial with the fuel pipe 30 and is located on the inner or outer circumference side of the fuel pipe 30, extending along the fuel pipe 30.

[0096] The carbon dioxide pipe 60 does not have to extend straight along the fuel pipe 30, but may extend slightly diagonally while running alongside the fuel pipe 30.

[0097] The injection port 61 of the carbon dioxide pipe 60 does not necessarily have to face the fuel pipe 30. The arrangement and orientation of the injection port 61 should be such that the area around the fuel pipe 30 is in an atmosphere of carbon dioxide (CO2).

[0098] The adsorbent material of the carbon dioxide capture unit 40 is not limited to pressure swing type or temperature swing type; for example, it may also be a humidity swing type.

[0099] The shut-off valve 75 may be normally closed, or it may be opened after detecting ignition in vehicle 1. The shut-off valve 75 may also be opened and closed manually by the user at the carbon dioxide capture station.

[0100] The carbon dioxide capture unit may capture carbon dioxide (CO2) contained in the outside air by introducing airflow from the vehicle.

[0101] In the above embodiment, the moving object was a vehicle, but it is not limited to this. The moving object may be, for example, an aircraft, a ship, or construction machinery. [Industrial applicability]

[0102] This disclosure is extremely useful and has high industrial applicability because it can be applied to mobile carbon dioxide capture devices. [Explanation of Symbols]

[0103] CO2 (carbon dioxide) E Exhaust gas F fuel Ta detection signal 1. Vehicle (mobile object) 2. Carbon dioxide capture device 10 Engines 20 fuel tanks 30 Fuel piping 40 Carbon Dioxide Capture Units 50 carbon dioxide tanks 51 Connection part 60 Carbon dioxide piping 61 Nozzle 70 Injection valves 75 Shut-off valve 80 detectors 82 Smoke Sensor 90 Controllers

Claims

1. The engine and A fuel tank where fuel is stored, A fuel pipe connecting the engine and the fuel tank, A carbon dioxide capture unit that captures carbon dioxide, A carbon dioxide tank in which the carbon dioxide recovered by the carbon dioxide recovery unit is stored, A carbon dioxide pipe connected to the carbon dioxide tank and extending along the fuel pipe, An injection valve that opens and closes an injection port provided in the carbon dioxide piping, The system includes a controller for controlling the injection valve, The controller is a mobile carbon dioxide recovery device that injects carbon dioxide from the carbon dioxide tank into the fuel pipe via the carbon dioxide pipe by operating the injection valve and opening the injection port.

2. The mobile body is equipped with a detector for detecting ignition, The controller receives a detection signal from the detector and activates the injection valve, as described in claim 1, for a mobile carbon dioxide recovery device.

3. The fuel pipe is lined up with a plurality of injection valves, The carbon dioxide piping is provided with a plurality of injection ports arranged along the fuel piping. The detector includes a plurality of smoke sensors arranged along the fuel piping that detect smoke generated on the moving body. The mobile carbon dioxide recovery device according to claim 2, wherein the controller identifies a smoke sensor among the plurality of smoke sensors that is not actually detecting smoke, and operates the injection valve to close the injection port among the plurality of injection ports that is closest to the identified smoke sensor.

4. The carbon dioxide tank is detachable from the carbon dioxide piping. A mobile carbon dioxide recovery device according to any one of claims 1 to 3, wherein an on / off valve is provided at the connection point between the carbon dioxide tank and the carbon dioxide piping.

5. The carbon dioxide recovery device for a mobile body according to any one of claims 1 to 3, wherein the carbon dioxide piping extends parallel to the fuel piping.

6. The carbon dioxide recovery unit recovers carbon dioxide from the exhaust gas discharged from the engine, as described in any one of claims 1 to 3, for a mobile carbon dioxide recovery device.

7. The carbon dioxide recovery device for a mobile body according to any one of claims 1 to 3, wherein the injection port faces the fuel piping.

8. The mobile carbon dioxide capture device according to any one of claims 1 to 3, wherein the mobile body is a vehicle.

Images