JP2008038763A - Gas fuel vehicle and its control method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a gas fuel vehicle and its control method, without requiring the replacement of a filter, while preventing a fillable quantity of fuel gas from reducing by a pressure loss by clogging of the filter. <P>SOLUTION: This gas fuel vehicle 1 is characterized by having a filling port 2 for inserting a nozzle 100 of a fuel gas supply device arranged in a gas station when filling fuel gas, a check valve 5 preventing a backflow of the fuel gas supplied from the filling port 2, the filter 6 arranged on the upstream side of the check valve in the flowing direction of the fuel gas, and a foreign matter removing device for automatically removing foreign matter sticking to the filter 6. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a gas fuel vehicle and a control method thereof, and more particularly to a gas fuel vehicle and a control method thereof that can reduce pressure loss during gas filling and that do not require filter replacement.

  In gas-fueled vehicles such as fuel cell vehicles and natural gas vehicles, fats and oils that cannot be removed at the gas station that supplies the fuel gas are mixed into the fuel gas, or foreign substances in the atmosphere are introduced from the filling port of the gas-fueled vehicle during filling preparation There is a problem of inflow.

For this reason, in a fuel cell system used in a conventional fuel cell vehicle, a recess and a baffle plate are provided in the fuel gas flow path, and foreign matter collides with the baffle plate to collect the foreign matter in the recess (for example, patents). Reference 1).
Japanese Patent Laying-Open No. 2005-268043 (FIGS. 2 and 3)

  However, in a fuel cell system used in a conventional fuel cell vehicle (see, for example, Patent Document 1), although a recess and a baffle plate are provided in the fuel gas flow path, a considerable amount of foreign matter passes through without being collected. There is a problem that the fuel cell accumulates in a flow path or the like.

  In general, a fuel gas passage of a gas fuel vehicle is provided with a filter for removing foreign matters. However, if the filter is not frequently cleaned or replaced, it will become clogged and the amount that should be able to be filled. There was a problem that the fuel gas could not be filled.

  Further, in the conventional gas fuel vehicle, when the filter is clogged, it is necessary to replace the filter. Therefore, many filters need to be replaced before the life of the gas fuel vehicle, resulting in a high replacement cost. It was.

  The present invention has been made in view of the above-described problems, and can prevent a reduction in the amount of fuel gas that can be filled due to pressure loss due to clogging of a filter, and does not require filter replacement. An object is to provide a fuel vehicle and a control method thereof.

  The gas-fueled vehicle according to the present invention prevents a backflow of the fuel gas supplied from the filling port into which the nozzle of the fuel gas supply device installed in the gas station is inserted when filling the fuel gas. A check valve, a filter provided on the upstream side of the check valve in the flow direction of the fuel gas, and a foreign matter removing device that automatically removes the foreign matter attached to the filter, To do.

  The gas fuel vehicle according to the present invention includes a filter provided on the upstream side of the check valve in the flow direction of the fuel gas, and a foreign matter removing device that automatically removes the foreign matter attached to the filter. Thus, it is possible to prevent the amount of fuel gas that can be filled from being reduced due to pressure loss due to clogging, and to eliminate the need for filter replacement.

(Embodiment 1)
FIG. 1 is a diagram for explaining a method of filling a general gas fuel vehicle with fuel gas. FIG. 1A is a perspective view showing a general gas fuel vehicle. As shown in FIG. 1A, the gas fuel vehicle 1 is filled with a nozzle of a fuel gas supply device installed in a gas station. A cap 3 made of a resin or the like is installed in the filling port 2 when the fuel gas is not filled and prevents foreign matter from entering from the filling port 2. In the gas fuel vehicle 1 shown in FIG. 1, it is assumed that the cap 3 is fastened with a wire or the like near the filling port 2. Further, the filling port 2 is normally covered with a filler lid (lid) 4, and when the fuel gas is filled, the filler lid 4 is opened and the cap 3 is removed.

  FIG. 1B is a longitudinal sectional view of the filling port 2 and the cap 3 shown in FIG. FIG. 1B is an enlarged cross-sectional view in the frame of FIG. 1A, and shows a state where the cap 3 is removed from the filling port 2. When the cap 3 is removed from the filling port 2 and the nozzle of the fuel gas supply device installed in the gas station is not inserted into the filling port 2, foreign matter 50 such as dust in the atmosphere enters the inside of the filling port 2. To do.

  FIG. 1C is a longitudinal sectional view showing a state in which the nozzle 100 of the fuel gas supply device installed in the gas station is inserted into the filling port 2. Here, the gas station refers to a facility or equipment for supplying fuel gas to the gas fuel vehicle 1 like a gasoline station in a gasoline engine vehicle. As shown in FIG. 1C, the fuel gas is filled into the gas fuel vehicle 1 from the fuel gas supply device installed in the gas station in a state where the nozzle 100 is inserted into the filling port 2. In general, the gas fuel vehicle 1 is equipped with a fuel gas tank (not shown in FIG. 1) for storing fuel gas. Further, a check valve 5 for preventing the back flow of the fuel gas and a filter 6 provided on the upstream side of the check valve 5 in the flow direction of the fuel gas are provided inside the filling port 2 of the gas fuel vehicle 1. .

  In general, fuel gas supplied from a fuel gas supply device of a gas station is compressed by a compressor. Since such a compressor is driven by hydraulic pressure, the fuel gas supplied from the fuel gas supply device of the gas station includes organic foreign matters 51 such as driving oil for the compressor. In addition, a filter for removing foreign matter is generally installed in the fuel gas supply device of the gas station, but organic foreign matter such as compressor drive oil is completely removed because it is vapor-like. Can not. In addition, resin and rubber seals used in gas station solenoid valves, etc., are mixed into the fuel gas in minute amounts due to wear, and those that cannot be removed by the gas station filter remain when filling the gas fuel vehicle and fill port 2 adheres to the filter 6.

  The foreign matter 50 such as dust in the atmosphere and the organic foreign matter 51 such as driving oil adhere to the filter 6 inside the filling port 2 and the effective area of the filter 6 decreases. FIG. 2A is a graph showing the relationship between the number of times of filling and the reduction rate of the effective area of the filter 6. When the effective area of the filter 6, that is, the cross-sectional area of the flow path is reduced, the pressure loss of the filling flow path is increased, the pressure at the completion of filling is reduced, and the amount of fuel gas that can be filled in the gas fuel vehicle is reduced. FIG. 2B is a graph showing the relationship between the effective area (channel cross-sectional area) of the filter 6 and the pressure at the completion of filling.

  3A to 3F are views showing the filling port and cap of the gas fuel vehicle according to Embodiment 1 of the present invention and the entire gas fuel vehicle. 3A is a longitudinal sectional view showing the filling port 2 and the cap 3 of the gas fuel vehicle according to the present embodiment, FIG. 3B is a view of the cap 3 viewed from the B side in FIG. 3A, and FIG. 3D is a sectional view taken along the line DD of FIG. 3A, FIG. 3E is a sectional view taken along the line EE of FIG. 3A, and FIG. 3F is a perspective view showing the gas fuel vehicle 1 according to the present embodiment. In addition, the gas fuel vehicle 1 which concerns on this embodiment shall be a fuel cell vehicle provided with the fuel cell. The gas fuel vehicle 1 according to the present embodiment is the same as the gas fuel vehicle 1 shown in FIG. 1 except for the following points, and the same components will be described with the same reference numerals.

  The filling port 2 of the gas fuel vehicle 1 according to the present embodiment includes a check valve 5 for preventing a backflow of fuel gas supplied from a nozzle (see FIG. 1) of a fuel gas supply device installed in the gas station. And a filter 6 provided on the upstream side of the check valve 5 in the flow direction of the fuel gas. Further, the gas fuel vehicle 1 according to the present embodiment is provided with a foreign matter removing device that automatically removes the foreign matter attached to the filter 6. The foreign matter removing apparatus for a gas fuel vehicle according to the present embodiment includes a foreign matter cleaning device that cleans the filter 6 by flowing compressed air as a cleaning fluid through the filter 6 and removes the foreign matter together with the compressed air. Consists of a foreign matter discharge device for discharging outside the vehicle.

  The foreign matter cleaning apparatus for a gas fuel vehicle according to the present embodiment includes an air introduction pipe 8 that guides compressed air to the filter 6 of the filling port 2. The air introduction pipe 8 according to this embodiment is connected between the check valve 5 of the filling port 2 and the filter 6 and supplies compressed air from the downstream side of the filter 6. The compressed air flows from the downstream side to the upstream side in the flow direction of the fuel gas, thereby cleaning the foreign matter attached to the filter 6. The filling port 2 is provided with a fluid guide 9 for flowing compressed air around the filter 6. Since the compressed air flows from the downstream side to the upstream side in the flow direction of the fuel gas, the foreign matter adhering to the filter 6 can be effectively removed. In addition, as shown in FIG. 3E, the compressed air swirls inside the fluid guide 9, so that the foreign matter attached to the filter 6 can be more effectively removed.

  The foreign matter discharge apparatus for a gas fuel vehicle according to the present embodiment includes a foreign matter discharge port 10 provided in the filling port 2 and a cap side discharge port 11 provided in the cap 3. The foreign matter discharge port 10 and the cap side discharge port 11 are not filled with fuel gas, and are in the same position when the cap 3 is attached to the filling port 2. For this purpose, as shown in FIG. 3C and FIG. 3D, a guide 13 is provided on the cap 3, and a recess 14 that fits the guide 13 is provided at the tip of the filling port 2. In the mounted state, the foreign matter discharge port 10 and the cap side discharge port 11 are always at the same position. The cap side discharge port 11 is connected to the cleaning fluid flow path 15, and the compressed air supplied from the air introduction pipe 8 passes through the foreign matter discharge port 10, the cap side discharge port 11 and the cleaning fluid flow path 15 to the outside of the vehicle. It is supposed to be discharged. The cleaning fluid channel 15 is formed inside a wire 16 for fixing the cap 3 to the gas fuel vehicle 1, for example. The cleaning fluid channel 15 is connected to an ejector (described later) of the gas fuel vehicle 1, and the compressed air that has cleaned the filter 6 is discharged to the outside by being sucked by the ejector.

  Furthermore, the filter 6 of the gas fuel vehicle 1 according to this embodiment carries a photocatalyst, and the gas fuel vehicle 1 includes a foreign matter decomposition device 18 in the vicinity of the filling port 2. The foreign matter decomposition device 18 is made of, for example, an ultraviolet light-emitting diode, and decomposes organic foreign matters attached to the filter 6 by irradiating the filter 6 carrying the photocatalyst with light. When the photocatalyst is irradiated with light, it generates active oxygen from oxygen in the atmosphere, and organic foreign matters such as driving oil are decomposed into water and carbon dioxide by the active oxygen. In the present embodiment, a sight glass 19 that prevents the foreign matter decomposition device 18 from being exposed to compressed air and transmits light from the foreign matter decomposition device 18 is provided between the foreign matter decomposition device 18 and the filling port 2.

  As shown in FIG. 3F, the gas fuel vehicle 1 according to the present embodiment is provided with a lid switch 20 that is turned on when the filler lid 4 is closed in the vicinity of the filler lid 4.

  FIG. 4 is a system configuration diagram showing the foreign substance cleaning apparatus and the foreign substance discharge apparatus according to the present embodiment. The gas fuel vehicle 1 according to the present embodiment includes a fuel cell 22 that generates power by reacting hydrogen as fuel gas with oxygen in the atmosphere, and a fuel tank 24 for storing the fuel gas. Hydrogen as fuel gas is supplied from the filling port 2 to the fuel tank 24 through the check valve 26, and hydrogen stored in the fuel tank 24 is supplied to the fuel cell 22 through the hydrogen pipe 28. The hydrogen pipe 28 is provided with an electromagnetic valve 30 and a pressure sensor 32, and the pressure sensor 32 detects the hydrogen pressure in the hydrogen pipe 28.

  On the other hand, air is supplied to the fuel cell 22 via the air pipe 34. The air pipe 34 is provided with a filter 36 and a compressor 38. The compressor 38 compresses air and supplies the compressed air to the fuel cell 22. Further, a branch pipe 40 is connected to the air pipe 34 on the downstream side of the compressor 38, and an air supply cutoff electromagnetic valve 41 is provided in the branch pipe 40. The branch pipe 40 guides the compressed air from the compressor 38 to the filter 6 of the filling port 2 through the air introduction pipe 8, and this compressed air removes foreign matter adhering to the filter 6 as a cleaning fluid as shown in FIG. To do. Since the compressed air is supplied to the filter 6 through the branch pipe 40 using the compressor 38, a special driving source for supplying the compressed air to the filter 6 is not necessary.

  The other end of the cleaning fluid channel 15 connected to the cap-side discharge port 11 of the cap 3 is connected to the ejector 42. The ejector 42 is provided in an exhaust pipe 43 for discharging air (nitrogen or the like) that has not reacted from the fuel cell 22 to the outside of the vehicle, and the compressed air that has washed the filter 6 is sucked by the ejector 42 so that it is outside the vehicle. To be discharged. Further, the cleaning fluid flow path 15 is provided with a cleaning fluid blocking solenoid valve 44 so that the compressed air can be passed or blocked. Since the ejector 42 sucks the compressed air using the exhaust from the fuel cell 22, no special drive source for discharging the compressed air to the outside of the vehicle is required. In the present embodiment, the foreign matter cleaning device includes the branch pipe 40, the air supply cutoff solenoid valve 41, the air introduction pipe 8, and the like. The foreign matter discharge device includes the foreign matter discharge port 10, the cap side discharge port. 11, the cleaning fluid flow path 15, the ejector 42, the cleaning fluid blocking electromagnetic valve 44, and the like.

  FIG. 5 is a flowchart showing a control method of the foreign matter decomposition apparatus 18 of the gas fuel vehicle 1 according to this embodiment. When the gas fuel vehicle 1 is started (step 11), the pressure sensor 32 detects the hydrogen pressure to check whether the fuel gas is filled (step 12), and before the gas fuel vehicle 1 is started. If the hydrogen pressure is higher after activation, the following foreign matter decomposition treatment is performed. Otherwise, the fuel cell 22 (FC system) is started without operating the foreign matter decomposition device 18 (ultraviolet light emitting diode in the present embodiment) (step 18).

  If the hydrogen pressure is higher after the gas fuel vehicle 1 is started in step 12 than before the gas fuel vehicle 1 is started, it is determined whether the lid switch 20 is ON, that is, whether the filler lid 4 is closed. Confirm (step 13). Thereby, it can confirm that the filler lid 4 is closed, the nozzle of the fuel gas supply apparatus installed in the gas station is not inserted in the filling port 2, and safety can be ensured. If the lid switch 20 is not ON, an alarm is issued and the fuel cell 22 (FC system) cannot be started (step 19).

  When it is confirmed in step 13 that the lid switch 20 is ON, the foreign matter decomposition device 18 (ultraviolet light emitting diode) is turned on to irradiate the filter 6 with light, and the organic foreign matter attached to the filter 6 is decomposed. (Step 14). Thereafter, it is determined whether or not a predetermined time has elapsed (step 15). When the predetermined time has elapsed, the foreign matter decomposition apparatus 18 is turned off, the light irradiation is stopped (step 16), and the foreign matter is decomposed. End (step 17). In FIG. 5, it is possible to suppress wasteful power consumption by setting the predetermined time for turning on the foreign matter decomposition apparatus 18 to the minimum time required for decomposition.

  FIG. 6 is a flowchart showing a method for controlling the foreign matter cleaning device and foreign matter discharge device of the gas fuel vehicle 1 according to the present embodiment. When the gas fuel vehicle 1 is activated (step 21), the pressure of the hydrogen is detected by the pressure sensor 32 in order to confirm whether or not the fuel gas is filled (step 22), and before the gas fuel vehicle 1 is activated. If the hydrogen pressure is higher after activation, the following foreign substance cleaning process and foreign substance discharge process are performed. If not, the fuel cell 22 (FC system) is started without operating the foreign matter cleaning device and the foreign matter discharge device (step 28).

  In step 22, if the hydrogen pressure is higher after the gas fuel vehicle 1 is started than before the gas fuel vehicle 1 is started, it is determined whether the lid switch 20 is ON, that is, whether the filler lid 4 is closed. Confirm (step 23). Thereby, it can confirm that the filler lid 4 is closed, the nozzle of the fuel gas supply apparatus installed in the gas station is not inserted in the filling port 2, and safety can be ensured. If the lid switch 20 is not ON, an alarm is issued and the fuel cell 22 (FC system) cannot be started (step 29).

  When it is confirmed in step 23 that the lid switch 20 is ON, the fuel cell 22 (FC system) and the compressor 38 are activated (step 24), and the air supply shut-off solenoid valve 41 and the cleaning fluid shut-off solenoid valve are activated. 44 is opened (step 25). Thereafter, it is determined whether or not a predetermined time has passed (step 26). When the predetermined time has passed, the air supply shut-off solenoid valve 41 and the cleaning fluid shut-off solenoid valve 44 are closed (step 27), and foreign matter is detected. This cleaning is finished (step 30). In FIG. 6, by setting the predetermined time for opening the air supply shut-off solenoid valve 41 and the cleaning fluid shut-off solenoid valve 44 to the minimum time required for cleaning, it is possible to suppress wasteful power consumption.

  The gas-fueled vehicle 1 according to the present embodiment includes a foreign matter cleaning device that automatically cleans foreign matter attached to the filter 6 and a foreign matter discharge device that discharges the cleaned foreign matter and cleaning fluid air to the outside of the vehicle. Therefore, it is possible to prevent the amount of fuel gas that can be filled due to pressure loss due to clogging of the filter 6 from being reduced, and it is possible to eliminate the need for filter replacement.

(Embodiment 2)
FIG. 7 is a system configuration diagram showing the foreign matter cleaning device and foreign matter discharge device of the gas fuel vehicle 1 according to the second embodiment of the present invention. The gas-fueled vehicle 1 according to the present embodiment is the same as the gas-fueled vehicle 1 according to the first embodiment except for the following points, and the same components will be described with the same reference numerals.

  The gas fuel vehicle 1 according to the present embodiment uses pure water generated by the reaction of hydrogen and oxygen in the fuel cell 22 instead of air as a cleaning fluid. For this reason, the gas fuel vehicle 1 according to the present embodiment is not provided with the branch pipe 40 and the air supply shut-off solenoid valve 41 branched from the air pipe 34, but instead uses pure water generated by the fuel cell 22. A pure water pipe 45 that leads to the filter 6 in the filling port 2, a pure water pump 46 that is provided in the pure water pipe 45 and supplies pure water generated by the fuel cell 22 to the filter 6, and a pure water pipe 45. And a pure water supply cutoff solenoid valve 47. The pure water introduced to the filter 6 at the filling port 2 through the pure water pipe 45 cleans foreign matter adhering to the filter 6 as a cleaning fluid. In addition, the structure of the filling port 2 and the filter 6 which concern on this embodiment is the same as that of what was shown in FIG. The pure water pump 46 is necessary for discharging pure water generated by the fuel cell 22 in a general fuel cell vehicle to the outside of the vehicle. In the present embodiment, the pure water pump 46 is used to fill the pure water with the pure water pump 46. Since the water is fed to the second filter 6, no other special drive source is required. Further, the pure water that has cleaned the filter 6 is sucked into the ejector 42 through the cleaning fluid passage 15 as in the first embodiment, and is discharged from the exhaust pipe 43 to the outside of the vehicle along with the exhaust.

  FIG. 8 is a flowchart showing a method for controlling the foreign matter cleaning device and foreign matter discharge device of the gas fuel vehicle 1 according to the present embodiment. When the gas fuel vehicle 1 is activated (step 31), the pressure of the hydrogen is detected by the pressure sensor 32 in order to confirm whether or not the fuel gas is filled (step 32), and before the gas fuel vehicle 1 is activated. If the hydrogen pressure is higher after activation, the following foreign substance cleaning process and foreign substance discharge process are performed. If not, the fuel cell 22 (FC system) is started without operating the foreign matter cleaning device and the foreign matter discharge device (step 38).

  In step 32, if the hydrogen pressure is higher after the gas fuel vehicle 1 is started than before the gas fuel vehicle 1 is started, it is determined whether the lid switch 20 is ON, that is, whether the filler lid 4 is closed. Confirm (step 33). Thereby, it can confirm that the filler lid 4 is closed, the nozzle of the fuel gas supply apparatus installed in the gas station is not inserted in the filling port 2, and safety can be ensured. If the lid switch 20 is not ON, an alarm is issued and the fuel cell 22 (FC system) cannot be started (step 39).

  If it is confirmed in step 23 that the lid switch 20 is ON, the fuel cell 22 (FC system) and the pure water pump 46 are started (step 34), the pure water supply cutoff electromagnetic valve 47 and the cleaning fluid are cut off. The electromagnetic valve 44 is opened (step 35). Thereafter, it is determined whether or not a predetermined time has elapsed (step 36). If the predetermined time has elapsed, the pure water supply cutoff electromagnetic valve 47 and the cleaning fluid cutoff electromagnetic valve 44 are closed (step 37), The cleaning of the foreign matter is finished (step 40). In FIG. 8, by setting the predetermined time for opening the pure water supply cutoff solenoid valve 47 and the cleaning fluid cutoff solenoid valve 44 to the minimum time required for cleaning, it is possible to suppress wasteful power consumption.

  In the present embodiment, pure water is used as a cleaning fluid for cleaning the filter 6, so that the adsorbing power of foreign matter to the filter 6 can be weakened, and the cleaning power can be further increased than when air is used. Other effects are the same as those of the gas fuel vehicle 1 according to the first embodiment.

  Note that both the branch pipe 40 shown in FIG. 4 and the pure water pipe 45 shown in FIG. 7 may be provided, and these may be merged, and the filter 6 may be washed with both compressed air and pure water.

(Embodiment 3)
9A to 9F are views showing a filling port and a cap of a gas fuel vehicle according to Embodiment 3 of the present invention. 9A is a longitudinal sectional view showing the filling port 2 and the cap 3 of the gas fuel vehicle according to the present embodiment, FIG. 9B is a view of the cap 3 as viewed from the B side in FIG. 9A, and FIG. 9C is a CC view of FIG. 9D is a sectional view taken along the line DD of FIG. 9A, FIG. 9E is a sectional view taken along the line EE of FIG. 9A, and FIG. 9F is a sectional view taken along the line FF of FIG. The gas fuel vehicle 1 according to the present embodiment is the same as the gas fuel vehicle 1 shown in the first embodiment or the second embodiment except for the following points, and the same components are denoted by the same reference numerals and described. .

  In the gas fuel vehicle 1 according to this embodiment, the cap 3 is provided with a foreign matter decomposition device 18 for irradiating the filter 6 with light. For this reason, the foreign substance decomposition | disassembly apparatus 18 and the sight glass 19 by the side of the filling port 2 are not provided. In addition, a wiring 48 for supplying power to the foreign substance decomposition apparatus 18 is provided inside the wire 16. The foreign substance decomposing apparatus 18 composed of an ultraviolet light emitting diode or the like can decompose organic foreign substances attached to the filter 6 as in the first or second embodiment. Other effects are the same as those of the gas fuel vehicle 1 according to the first or second embodiment. Note that compressed air may be used as the cleaning fluid as in the first embodiment, or pure water generated in the fuel cell 22 may be used as in the second embodiment.

(Embodiment 4)
FIGS. 10A to 10C are views showing the gas fuel vehicle according to the fourth embodiment of the present invention, the filling port, the cap, the periphery thereof, and the entire gas fuel vehicle. FIG. 10A is a longitudinal sectional view showing the filling port 2 and the cap 3 of the gas fuel vehicle according to the present embodiment, FIG. 10B is a sectional view showing the peripheral portion of the filling port 2, and FIG. 10C is the gas fuel vehicle 1 according to the present embodiment. FIG. The gas-fueled vehicle 1 according to the present embodiment is the same as the gas-fueled vehicle 1 according to the first embodiment except for the following points, and the same components will be described with the same reference numerals.

  The gas fuel vehicle 1 according to the present embodiment includes a foreign matter adsorbing device 60 and a foreign matter removing brush 62 as a foreign matter removing device that automatically removes foreign matter attached to the filter 6 instead of the foreign matter cleaning device and the foreign matter discharging device. Yes. The foreign matter adsorption device 60 is provided on the cap 3 and is made of a charging material. Moreover, the foreign material adsorption | suction apparatus 60 adjoins the filter 6 when the cap 3 is mounted | worn with the filling port 2, and adsorbs the foreign material adhering to the filter 6 with the attraction | suction force by static electricity. Note that the gas fuel vehicle according to the present embodiment is not provided with the air introduction pipe 8, the foreign matter discharge port 10, the cap side discharge port 11, the guide 13, the recess 14, the cleaning fluid channel 15 and the like.

  Further, a foreign matter removing brush 62 for manually removing foreign matter attached to the foreign matter adsorbing device 60 is provided in the vicinity of the filling port 2 of the gas fuel vehicle 1 according to the present embodiment. As shown in FIG. 10B, the cap 3 is inserted into the core portion 64 of the foreign matter removing brush 62 and brushed to remove foreign matter attached to the foreign matter adsorbing device 60. The foreign matter removing brush 62 includes a core portion 64 and other portions made of a conductive material, and is connected to a ground 68 on the vehicle side and an earth 66. Since the charge accumulated in the foreign matter adsorption device 60 flows to the ground 68 through the ground 66, the foreign matter removal effect by the foreign matter removal brush can be improved.

  Further, the core portion 64 of the foreign matter removing brush 62 is connected to the foreign matter discharge passage 70, and the other end of the foreign matter discharge passage 70 is connected to an ejector (see FIG. 4) of the gas fuel vehicle 1. The foreign matter adhering to the foreign matter removing brush 62 is sucked into the ejector together with the air inside the foreign matter removing brush 62 as in the first and second embodiments, and is discharged from the exhaust pipe (see FIG. 4) of the gas fuel vehicle 1 to the outside of the vehicle. The Here, the discharge of the foreign matter by the ejector can be performed for a predetermined time after the vehicle is started and the fuel cell 22 is started as in the first and second embodiments.

  Needless to say, the present invention is not limited to the above-described embodiments, and includes various modifications and improvements that can be made within the scope of the technical idea. For example, the foreign matter removing device such as the foreign matter cleaning device, the foreign matter discharging device, and the foreign matter adsorbing device according to the present invention can be applied to a gas fuel vehicle other than the fuel cell vehicle, such as a natural gas vehicle.

It is a figure for demonstrating the method of filling a common gas fuel vehicle with fuel gas. It is the graph which showed the area reduction rate of the filter, and the pressure at the time of filling completion. 3 is a longitudinal sectional view showing a filling port and a cap of the gas fuel vehicle according to Embodiment 1. FIG. It is the figure which looked at the cap from the B side in FIG. 3A. It is CC sectional drawing of FIG. 3A. It is DD sectional drawing of FIG. 3A. It is EE sectional drawing of FIG. 3A. 1 is a perspective view showing a gas fuel vehicle according to Embodiment 1. FIG. It is a system block diagram which shows the foreign material cleaning apparatus and foreign material discharge apparatus which concern on Embodiment 1. 3 is a flowchart illustrating a control method of the foreign matter decomposition apparatus for a gas fuel vehicle according to the first embodiment. 3 is a flowchart illustrating a control method for a foreign matter cleaning device and a foreign matter discharge device for a gas fuel vehicle according to a first embodiment. It is a system block diagram which shows the foreign material cleaning apparatus and foreign material discharge apparatus of the gas fuel vehicle which concern on Embodiment 2 of this invention. 6 is a flowchart illustrating a method for controlling a foreign matter cleaning device and a foreign matter discharge device of a gas fuel vehicle 1 according to a second embodiment. It is a longitudinal cross-sectional view which shows the filling port and cap of the gas fuel vehicle which concern on Embodiment 3. FIG. It is the figure which looked at the cap from the B side in FIG. 9A. It is CC sectional drawing of FIG. 9A. It is DD sectional drawing of FIG. 9A. It is EE sectional drawing of FIG. 9A. It is FF sectional drawing of FIG. 9A. It is a longitudinal cross-sectional view which shows the filling port and cap of the gas fuel vehicle which concern on Embodiment 4. It is sectional drawing which shows the peripheral part of the filling port of the gas fuel vehicle which concerns on Embodiment 4. FIG. It is a perspective view which shows the gas fuel vehicle which concerns on Embodiment 4. FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Gas fuel vehicle 2 Filling port 3 Cap 4 Filler lid 5 Check valve 6 Filter 8 Air introduction pipe 9 Fluid guide 10 Foreign substance discharge port 11 Cap side discharge port 13 Guide 14 Concave part 15 Washing fluid flow path 16 Wire 18 Foreign material decomposition device ( UV light emitting diode)
19 Sight Glass 20 Lid Switch 22 Fuel Cell 24 Fuel Tank 26 Check Valve 28 Hydrogen Piping 30 Solenoid Valve 32 Pressure Sensor 34 Air Piping 36 Filter 38 Compressor 40 Branch Piping 42 Ejector 43 Exhaust Pipe 44 Cleaning Fluid Shutoff Solenoid Valve 45 Pure Water Piping 46 Pure water pump 47 Solenoid valve for deionized water supply 48 Wiring 50, 51 Foreign matter 60 Foreign matter adsorbing device 62 Foreign matter removal brush 64 Core portion 66 Ground 68 Ground 70 Foreign matter discharge flow path

Claims (19)

A filling port into which the nozzle of the fuel gas supply device installed in the gas station is inserted when filling the fuel gas;
A check valve for preventing a back flow of the fuel gas supplied from the filling port;
A filter provided upstream of the check valve in the flow direction of the fuel gas;
A foreign matter removing device for automatically removing foreign matter attached to the filter;
A gas-fueled vehicle comprising:   The foreign matter removing device has a foreign matter cleaning device for cleaning the filter to remove foreign matter by flowing a cleaning fluid through the filter, and a foreign matter discharging device for discharging the removed foreign matter together with the cleaning fluid to the outside of the vehicle. The gas fuel vehicle according to claim 1.   3. The gas fuel vehicle according to claim 2, wherein the foreign matter cleaning device cleans foreign matter adhering to the filter by flowing the cleaning fluid from the downstream side to the upstream side in the flow direction of the fuel gas. .   4. The gas fuel vehicle according to claim 2, wherein the filter includes a photocatalyst, and includes a foreign matter decomposition device that decomposes organic foreign matters by irradiating the filter carrying the photocatalyst with light. .   The gas-fueled vehicle according to claim 4, wherein the foreign matter decomposing apparatus includes an ultraviolet light emitting diode.   A foreign matter discharge port provided in the filling port, a cap that is attached to the filling port when fuel gas is not filled and prevents foreign matter from entering from the filling port, and a cap provided in the cap A guide is provided on the cap so that the foreign substance discharge port and the cap side discharge port are in the same position when the cap is mounted on the filling port. The gas fuel vehicle according to claim 4 or 5, wherein a recess for fitting with the guide is provided.   The gas fuel vehicle according to claim 6, wherein the foreign matter decomposition apparatus is provided on the cap.   The gas fuel vehicle according to claim 6, further comprising a sight glass that prevents the foreign matter decomposition apparatus from being exposed to the cleaning fluid and transmits light from the foreign matter decomposition apparatus.   An ejector provided in an exhaust pipe of the gas fuel vehicle, a cleaning fluid passage connected to the cap side discharge port and the ejector, and a flow of the cleaning fluid provided in the cleaning fluid passage. The gas fuel vehicle according to any one of claims 6 to 8, further comprising: a cleaning fluid blocking solenoid valve capable of being discharged and discharged to the outside of the vehicle by being sucked by the ejector.   The gas fuel vehicle includes a fuel cell, a compressor for supplying air to the fuel cell, a branch pipe for guiding the air from the compressor to the filter, and a flow path provided in the branch pipe for blocking the flow of air. A gas-fueled vehicle according to any one of claims 2 to 9, further comprising a solenoid valve for shutting off an air supply, wherein the air removes foreign matter adhering to the filter as the cleaning fluid. .   The gas fuel vehicle includes a fuel cell, a pure water pump for feeding pure water generated by the reaction of hydrogen and oxygen in the fuel cell to the filter, and the pure water from the pure water pump to the filter. A deionized water pipe and a deionized water supply cutoff solenoid valve provided in the deionized water pipe and capable of blocking the flow of the deionized water, wherein the deionized water adheres to the filter as the cleaning fluid. The gas fuel vehicle according to any one of claims 2 to 9, wherein the gas fuel vehicle is removed.   A cap that is attached to the filling port when the fuel gas is not filled and prevents foreign matter from entering through the filling port; and the foreign matter removing device is provided with the cap to remove foreign matter attached to the filter. The gas fuel vehicle according to claim 1, further comprising a foreign matter adsorbing device that is removed by adsorption.   13. The gas fuel vehicle according to claim 12, wherein the foreign matter adsorbing device is made of a charging material and is provided so as to be close to the filter when the cap is attached to the filling port.   14. The gas fuel vehicle according to claim 13, further comprising a foreign matter removing brush for manually removing foreign matter attached to the foreign matter adsorbing device.   The gas-fueled vehicle according to claim 14, wherein the foreign matter removing brush is made of a conductive material and connected to the ground by ground.   An ejector provided in an exhaust pipe of the gas fuel vehicle, the foreign matter removal brush, and a foreign matter discharge passage connected to the ejector, and foreign matter attached to the foreign matter removal brush is sucked into the ejector. The gas fuel vehicle according to claim 14 or 15, wherein the gas fuel vehicle is discharged outside the vehicle.   The method for controlling a gas fuel vehicle according to any one of claims 4 to 9, wherein the gas fuel vehicle has a filler lid that covers the filling port in a closed state, and the filler lid is closed. The gas fuel vehicle is characterized in that a lid switch that is turned on when the lid switch is turned on, irradiates light from the foreign matter decomposition device when the lid switch is turned on, and stops light irradiation after a predetermined time has elapsed. Control method.   11. The method for controlling a gas fuel vehicle according to claim 10, wherein the gas fuel vehicle includes a filler lid that covers the filling port when the gas fuel vehicle is closed, and a lid that is turned on when the filler lid is closed. A gas-fueled vehicle comprising a switch, wherein the lid switch is turned on and the air supply shut-off solenoid valve is opened when the compressor is operated, and the air supply shut-off solenoid valve is closed after a predetermined time has elapsed. Control method.   12. The method for controlling a gas fuel vehicle according to claim 11, wherein the gas fuel vehicle includes a filler lid that covers the filling port when the gas fuel vehicle is closed, and a lid that is turned ON when the filler lid is closed. A switch, the lid switch is turned on, and when the pure water pump is activated, the pure water supply cutoff solenoid valve is opened, and the pure water supply cutoff solenoid valve is closed after a lapse of a predetermined time. To control a gas-fueled vehicle.