JP2008137505A - Moving body - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a moving body suppressing water discharged from an energy source to the outside of the moving body from being scattered to a periphery of the moving body. <P>SOLUTION: The moving body mounts the energy source 12 for propulsion comprising a fuel cell or a hydrogen engine for producing water by receiving feeding of a gas containing hydrogen. The moving body is provided with a discharge gas conduit 16 for connecting the energy source and the outside of the moving body and discharging the discharge gas containing water from the energy source to the outside of the moving body. A conduit water amount obtaining means for obtaining an amount of water existing in the discharge gas conduit 16 is provided. A discharge water suppression means for suppressing water discharged from the energy source to the outside of the moving body based on the amount of water obtained by the conduit obtaining means is provided. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a mobile body, and more particularly, to a mobile body equipped with an energy source composed of a fuel cell or a hydrogen engine that generates water with power generation.

Conventionally, for example, Japanese Patent Laying-Open No. 2005-153853 discloses a moving body on which a fuel cell is mounted and which suppresses the scattering of water around the moving body. During the operation of the fuel cell, cathode gas and anode gas are supplied, and water is generated near the cathode of the fuel cell in accordance with the power generation reaction. The generated water moves along with the gas flow and is discharged outside the fuel cell. In a moving body equipped with a fuel cell, water discharged from the fuel cell is discharged to the outside of the moving body. The water discharged to the outside of the moving body may be scattered around the moving body. Therefore, in the above-described conventional publication, the discharge of water to the outside of the moving body is suppressed based on the amount of water generated by the fuel cell so that the water does not scatter around.
JP 2005-153853 A

  During operation of the fuel cell, water located in the fuel cell moves with the flow of the cathode offgas. The water contained in the cathode off gas may remain in the vicinity of the fuel cell without being discharged outside the moving body. The water remaining in the vicinity of the fuel cell is discharged to the outside of the moving body as the water is discharged, for example, when a large amount of water is generated at the time of high output of the fuel cell. At this time, the amount of water discharged from the fuel cell cannot be considered equivalent to the amount of water produced. Therefore, in the above conventional publication, the amount of water discharged to the outside of the moving body cannot be estimated correctly, and there is a possibility that water is scattered around the moving body.

  The present invention has been made to solve the above problems, and is a mobile body equipped with an energy source composed of a fuel cell or a hydrogen engine, and water discharged from the energy source to the outside of the mobile body moves. An object of the present invention is to provide a moving body that suppresses scattering around the body.

  In order to achieve the above object, a first invention is a mobile body equipped with an energy source for propulsion composed of a fuel cell or a hydrogen engine that generates water by receiving a supply of a gas containing hydrogen. An exhaust gas pipe for connecting the source and the outside of the mobile body to discharge exhaust gas containing water from the energy source to the outside of the mobile body, and a pipe water quantity acquisition means for acquiring the amount of water located in the exhaust gas pipe And a discharge water suppressing means for suppressing water discharged from the energy source to the outside of the moving body based on the amount of water acquired by the pipe line acquisition means.

  2nd invention is the mobile body described in 1st invention, Comprising: The water quantity acquisition means which acquires the water quantity located in an energy source, The said discharge water suppression means is the amount of water acquired by the said water quantity acquisition means And water discharged from the energy source to the outside of the moving body based on the sum of the water amounts acquired by the pipe water amount acquisition means.

  A third invention is the moving body according to the first or second invention, comprising a distance acquisition means for acquiring a distance between an object located around the exhaust gas pipe outlet and the moving body, The discharged water suppression means calculates the flight distance of water discharged from the mobile body based on the sum of the water amount acquired by the water amount acquisition means and the water amount acquired by the pipe water amount acquisition means. Suppressing the water discharged from the energy source to the outside of the mobile body based on the difference between the distance acquired by the distance acquisition unit and the flight distance calculated by the water scattering distance calculation unit It is characterized by.

  A fourth invention is the mobile body according to any one of the first to third inventions, wherein the pipe water amount acquisition means includes pipe temperature acquisition means for acquiring the temperature of the exhaust gas pipe. It is characterized by that.

  5th invention is a moving body as described in 4th invention, Comprising: The said pipe line water quantity acquisition means contains the temperature acquisition means which acquires the temperature of an energy source, The temperature acquired by the said temperature acquisition means and the said Based on the difference from the temperature acquired by the pipe temperature acquisition means, the amount of water present in the exhaust gas pipe is acquired.

  A sixth invention is the mobile body according to any one of the first to fifth inventions, wherein the exhaust gas conduit includes a gas-liquid separator that separates exhaust gas into liquid and gas, The pipe water quantity acquisition means includes gas / liquid separator pipe water quantity acquisition means for acquiring the amount of water located in an exhaust gas pipe connecting the gas-liquid separator and the outside of the moving body.

  7th invention is a moving body as described in any one invention among 1-6 invention, Comprising: The said exhaust gas pipe line is equipped with a silencer, The said pipe line water quantity acquisition means is the said exhaust gas pipe | tube. It includes a silencer water amount acquisition means for acquiring the amount of water located in the silencer provided on the road.

  An eighth invention is the mobile body according to any one of the first to seventh inventions, wherein the pipe water amount acquisition means includes vehicle inclination detection means for detecting the inclination of the mobile body. It is characterized by.

  A ninth invention is the fuel cell according to any one of the third to eighth inventions, wherein the movable body includes the exhaust gas pipe outlet at the rear of the movable body, and the distance acquisition is performed. The means acquires a distance between an object located behind the moving body and the moving body.

  According to the first invention, the discharge of water from the moving body to the outside is suppressed based on the amount of water located in the exhaust gas pipeline. Thereby, the amount of water discharged from the moving body to the outside can be acquired correctly. Therefore, according to the present invention, it is difficult for water to splash around the moving body.

  According to the second invention, the discharge of water from the moving body to the outside is suppressed based on the sum of the amount of water located in the exhaust gas pipeline and the amount of water located in the energy source. Therefore, according to this invention, discharge | emission of water is suppressed based on the correct amount of water discharged | emitted from a moving body outside. Therefore, it is difficult for water to scatter around the moving body.

  According to the third aspect of the invention, the flight distance of the water discharged from the moving body to the outside is calculated based on the sum of the amount of water located in the exhaust gas pipe and the amount of water located in the energy source. And the water discharged | emitted based on the calculated flight distance is suppressed so that the discharged water may not scatter to the object around an exhaust-gas-pipe exit. Therefore, according to the present invention, the scattering distance of water can be accurately calculated by considering the amount of water present in the exhaust gas pipe. Therefore, it is difficult for water to splash on the object around the exhaust gas pipe outlet.

  According to the fourth aspect of the invention, the amount of water located in the exhaust gas pipeline is acquired based on the temperature of the exhaust gas pipeline. When the temperature of the exhaust pipe is high, the amount of water located in the exhaust pipe is small. When the temperature of the exhaust pipe is low, the amount of water present in the exhaust pipe is large. Therefore, according to the present invention, the amount of water present in the exhaust gas pipe line can be accurately acquired.

  According to the fifth aspect of the invention, the amount of water located in the exhaust gas pipe is acquired based on the temperature difference between the energy source and the exhaust gas pipe. If the temperature difference between the energy source and the exhaust gas pipeline is large, water vapor contained in the exhaust gas is likely to condense, and the amount of water in the exhaust gas pipeline is large. If the temperature difference between the energy source and the exhaust gas pipeline is small, water vapor contained in the exhaust gas is difficult to condense, and the amount of water in the exhaust gas pipeline is small. Therefore, according to the present invention, the amount of water present in the exhaust gas pipe line can be accurately acquired.

According to the sixth aspect of the invention, the amount of water located in the exhaust gas pipe downstream from the gas-liquid separator is acquired. The water in the exhaust gas pipe downstream from the gas-liquid separator is not stored and is easily discharged outside the moving body. Therefore, according to the present invention, the amount of water discharged to the outside of the moving body can be accurately acquired.
According to the seventh invention, the amount of water located in the silencer is acquired. In the exhaust gas pipeline, water tends to accumulate in the silencer. The water accumulated in the silencer is likely to be discharged outside the moving body. Therefore, according to the present invention, the amount of water discharged to the outside of the moving body can be accurately acquired.

  According to the eighth aspect of the invention, the amount of water located in the exhaust gas pipeline is acquired based on the inclination of the vehicle. Based on the inclination of the vehicle, the amount of water that can be located in the exhaust gas pipe changes. Therefore, according to the present invention, it is possible to accurately acquire the amount of water discharged to the outside of the moving body.

  According to the ninth aspect, the exhaust gas pipe outlet is provided at the rear of the moving body, and the distance to the object located behind the moving body is acquired. Therefore, according to this invention, it is easy to suppress scattering of the water to the object located behind a mobile body.

Embodiment 1 FIG.
[Configuration of Embodiment 1]
FIG. 1 is a diagram for explaining a vehicle according to a first embodiment. A vehicle 10 that is a moving body includes a fuel cell 12. The fuel cell 12 includes a cathode gas conduit 14 connected to an air intake port. The fuel cell 12 includes a cathode offgas conduit 16 that connects the cathode outlet of the fuel cell 12 and the rear outside of the vehicle 10. Here, the rear of the vehicle 10 refers to the periphery of the vehicle 10 in the opposite direction to the normal traveling direction of the vehicle 10 (the traveling direction in the D range).

  The fuel cell 12 and the cathode offgas conduit 16 are provided so as to be horizontal with respect to the vehicle 10 when the vehicle 10 is placed on the ground (90 degrees with respect to the direction of gravity of the earth). At this time, the fuel cell 12 and the cathode offgas conduit 16 are also horizontal with respect to the ground.

  During the operation of the fuel cell 12, a cathode gas (air (oxygen gas)) is supplied to the fuel cell 12, and an anode gas (hydrogen gas) is supplied. Water is produced. The vehicle 10 uses the fuel cell 12 as an energy source for propulsion. Specifically, the motor (not shown) is operated using the electric energy generated by the fuel cell 12 to drive the wheels of the vehicle 10 to propel the vehicle 10. The water produced near the cathode moves with the cathode gas. The cathode gas discharged from the fuel cell to the outside of the fuel cell is referred to as cathode off gas. The cathode off gas is discharged to the rear of the vehicle 10 through the cathode off gas conduit 16.

  When the vehicle 10 travels, a vehicle (not shown: hereinafter referred to as the following vehicle 18) may be located behind the vehicle 10. The vehicle 10 includes a distance sensor 20 that measures the distance from the following vehicle 18. Here, the distance sensor 20 uses a millimeter wave radar. The distance sensor 20 is connected to the ECU 22 and transmits the measured distance to the ECU 22. The vehicle 10 includes a vehicle speed sensor 24 that measures the traveling speed of the vehicle 10. The vehicle speed sensor 24 is connected to the ECU 22 and has a role of transmitting the measured vehicle speed to the ECU. The vehicle 10 includes an outside air temperature sensor 26 that measures the temperature around the vehicle 10. The outside air temperature sensor 26 is connected to the ECU 22 and transmits the measured outside air temperature to the ECU 22. The vehicle 10 includes an inclination sensor 28 that measures the inclination of the vehicle 10. The inclination sensor 28 is connected to the ECU 22 and transmits the measured inclination of the vehicle 10 to the ECU 22.

  FIG. 2 is an enlarged view of the periphery of the fuel cell 12 and the cathode offgas conduit 16. The fuel cell 12 includes a thermometer 30 that measures the temperature inside the fuel cell 12. The thermometer 30 is connected to the ECU 22 and transmits the measured temperature to the ECU 22. The fuel cell 12 includes an ammeter 32 that measures the current of the fuel cell 12. The ammeter 32 is connected to the ECU 22 and transmits the measured current to the ECU 22.

  The cathode gas conduit 14 will be described. The cathode gas line 14 includes a compressor 34. The compressor 34 has a role of taking in air from the air intake port and causing the cathode gas to flow through the cathode gas conduit 14. The compressor 34 is connected to the ECU 22 and transmits the flow rate of the cathode gas to the ECU 22 and can adjust the flow rate of the cathode gas in accordance with a signal from the ECU 22.

  The cathode offgas conduit 16 will be described. The cathode offgas pipe line 16 includes a pipe line 36 connecting the cathode gas outlet of the fuel cell 12 and the pressure regulating valve 38. The pressure regulating valve 38 has a role of adjusting the cathode gas of the fuel cell 12 to a predetermined pressure. The pressure regulating valve 38 is connected to the gas-liquid separator 42 via the conduit 40. The gas-liquid separator 42 serves to separate the cathode offgas into a gas and a liquid. The gas-liquid separator 42 has a role of discharging the separated liquid to the outside of the gas-liquid separator 42. The gas-liquid separator 42 includes a thermometer 44 that measures the temperature of the cathode offgas in the gas-liquid separator 42. The thermometer 44 is connected to the ECU 22 and transmits the measured temperature to the ECU 22. The gas-liquid separator 42 is connected to a silencer 48 via a conduit 46. A detailed description of the silencer 48 will be given later. The silencer 48 includes a conduit 50 that connects the silencer and the outside of the vehicle. The pipeline 50 is curved downward (toward the ground) of the vehicle 10 in order to escape the suspension provided at the rear of the vehicle 10. The pipe 50 is provided with a thermometer 52 that measures the temperature of the cathode offgas in the pipe at one end in contact with the outside of the vehicle 10. The thermometer 52 is connected to the ECU 22 and transmits the measured temperature to the ECU 22.

  During the operation of the fuel cell 12, the cathode gas is supplied to the fuel cell with the operation of the compressor 34, and water is generated with the power generation. The water generated by the fuel cell 12 can accumulate in the fuel cell 12. The water produced in the fuel cell 12 flows through the cathode gas conduit 16 as the cathode off gas flows. Water contained in the cathode off-gas can be separated by the gas-liquid separator 42 and discharged to the outside of the gas-liquid separator 42 (outside of the cathode off-gas conduit). Further, water contained in the cathode off gas can be discharged to the rear of the vehicle 10. Further, water contained in the cathode offgas may remain in the cathode offgas conduit 16 without being discharged to the rear of the vehicle 10. Further, water vapor contained in the cathode offgas pipe 16 can be condensed into liquid water in the cathode offgas pipe 16. In other words, the cathode off-gas pipe 16 can contain residual water and water generated by condensation. Liquid water may be located in the silencer 48. Liquid water may be located in a pipeline 50 that connects the silencer and the exterior of the vehicle.

  FIG. 3 is a diagram showing the relationship between the amount of liquid water located in the silencer 48 and the inclination of the vehicle. The silencer 48 is connected to a conduit 46 and a conduit 50 connecting the silencer and the outside of the vehicle so as to penetrate the front and rear of the silencer case. The silencer 48 includes glass wool as a sound absorbing material on the inner wall of the silencer case. The silencer 48 has a role to mute the sound generated by the circulation of the cathode off gas.

  FIG. 3A shows the silencer 48 when the vehicle 10 has an inclination a = 0 (a represents an angle). The inclination a of the vehicle 10 represents the front-rear inclination of the vehicle 10, and the upward direction of the vehicle 10 is positive. When the inclination a = 0, the silencer 48 is placed horizontally (90 degrees with respect to the direction of gravity). As described above, the silencer 48 may contain liquid water. Liquid water tends to be located in the voids of glass wool. When the inclination a = 0, the volume 54 of liquid water collected in the silencer 48 is large. FIG. 3B shows the silencer 48 when the inclination a> 0. When the inclination a> 0, the silencer 48 has a duct 50 connecting the silencer and the outside of the vehicle lower than the silencer 48 (inclined in the direction of gravity. At this time, liquid water collected in the silencer 48 The volume 56 is small.

  Consider the case where the slope a> 0. When the inclination a is large (where a> 0), the volume that can be located in the silencer 48 is small. When the inclination a is small (however, a> 0), the volume of liquid water that can be located in the silencer 48 is large. Next, consider the case where the slope a <0. When the inclination a is small (where a <0), the volume of liquid water that can be located in the silencer 48 is small. When the inclination a is large (a <0), the volume of liquid water that can be located in the silencer 48 is large.

  When the absolute value (| a |) of the inclination a is large, the volume of liquid water that can be located in the silencer 48 is small. When the absolute value (| a |) of the inclination a is small, the volume of liquid water that can be located in the silencer 48 is large. Further, when the inclination a increases, the liquid water located in the silencer 48 is likely to move to the conduit 50 connecting the silencer and the outside of the vehicle. The liquid water in the pipe line 50 can be discharged to the rear of the vehicle 10. When the inclination a becomes small, the liquid water located in the silencer 48 easily moves to the pipe 46.

  The relationship between the cathode offgas conduit 16 and the inclination a of the vehicle 10 can be explained in the same manner as the above-described relationship between the amount of liquid water in the silencer 34 and the inclination a of the vehicle 10. When the absolute value (| a |) of the slope a is large, the volume of liquid water that can be accumulated in the cathode offgas pipe 16 is small. When the absolute value (| a |) of the inclination a is small, the volume of liquid water that can be accumulated in the cathode offgas conduit 16 is large. Further, when the inclination a increases, the liquid water located in the cathode offgas conduit 16 is easily discharged to the rear of the vehicle 10. When the inclination “a” becomes small, the liquid water located in the cathode offgas pipe line 16 easily moves to the fuel cell 12.

  The ECU 22 can calculate the amount of water discharged from the fuel cell 12 and the amount of liquid water located in the cathode offgas conduit 16 as shown in the specific processing of the ECU described later, for example. The ECU 22 can calculate the sum of the amount of water discharged from the fuel cell 12 and the amount of liquid water located in the cathode offgas conduit 16.

[Operation of the first embodiment]
When the temperature of the cathode offgas conduit 16 is high, the gas temperature of the cathode offgas is high and the saturated water vapor partial pressure of the cathode offgas is high. When the temperature of the cathode offgas conduit 16 is low, the temperature of the cathode offgas is low and the saturated water vapor partial pressure of the cathode offgas is low. When the saturated water vapor partial pressure of the cathode off gas is high, the ratio of water vapor to the water flowing through the cathode off gas conduit 16 is large, and the amount of water remaining in the cathode off gas conduit 16 is small. When the saturated water vapor partial pressure of the cathode off gas is low, the ratio of liquid water to the water flowing through the cathode off gas conduit 16 is large, and the amount of water remaining in the cathode off gas conduit 16 is large.

  If the temperature difference in the cathode offgas conduit 16 is large, water is likely to condense in the cathode offgas conduit 16. If the temperature difference in the cathode offgas conduit is small, water is unlikely to condense in the cathode offgas conduit 16. If water is likely to condense, the amount of water produced by condensation in the cathode offgas line 16 is large. If the water is difficult to condense, the amount of water produced by condensation in the cathode offgas line 16 is small.

  As described above, during the operation of the fuel cell 12, the water discharged from the fuel cell 12 is discharged to the rear of the vehicle 10 according to the cathode off-gas flow. The cathode off-gas line 16 has a residual water amount and a water amount generated by condensation. The liquid water located in the cathode offgas conduit 16 is discharged to the rear of the vehicle 10 in accordance with the cathode offgas flow. Therefore, the sum of the amount of water discharged from the fuel cell 12 and the amount of liquid water located in the cathode offgas conduit 16 is the amount of water discharged to the rear of the vehicle 10.

If the amount of water discharged to the rear of the vehicle 10 is large, the scattering distance of water to the rear of the vehicle 10 is long. When the amount of water discharged to the rear of the vehicle 10 is small, the scattering distance of water to the rear of the vehicle 10 is short. Further, the water discharged to the rear of the vehicle 10 is moving with the flow of the cathode off gas. When the flow rate of the cathode off gas is large, the scattering distance of water to the rear of the vehicle 10 is long. If the flow rate of the cathode off gas is small, the scattering distance of water to the rear of the vehicle 10 is short.
[Effect of Embodiment 1]
As described above, the sum of the amount of water discharged from the fuel cell 12 and the amount of liquid water located in the cathode offgas conduit 16 is the amount of water discharged to the rear of the vehicle 10. If the amount of water discharged to the rear of the vehicle 10 is large, the scattering distance of water to the rear of the vehicle 10 is long. When the flow rate of the cathode gas by the compressor 34 is reduced, the flow rate of the cathode off gas is reduced, and the scattering distance of water to the rear of the vehicle 10 is reduced. Therefore, based on the sum of the amount of water discharged from the fuel cell 12 and the amount of liquid water located in the cathode offgas pipe 16, the cathode offgas flow rate is reduced to suppress the scattering of water to the following vehicle 18. be able to.

  As described above, when the inclination a of the vehicle 10 increases, the liquid water located in the cathode offgas conduit 16 is likely to be discharged to the rear of the vehicle 10. Therefore, when the inclination a of the vehicle 10 increases, the water scattering to the succeeding vehicle 18 can be effectively suppressed by suppressing the water scattering based on the amount of liquid water located in the cathode offgas conduit 16. .

  In the present embodiment, the scattering of water to the following vehicle 18 is suppressed by reducing the cathode gas flow rate, but the present invention is not limited to this. What is necessary is just to be able to suppress scattering of water to the succeeding vehicle 18. For example, the flow rate of the cathode gas may be reduced by reducing the power generation amount of the fuel cell 12. For example, the pressure of the cathode gas may be decreased by the pressure regulating valve 38. For example, the amount of water discharged to the outside of the vehicle 10 may be reduced by increasing the temperature of the fuel cell 12 by reducing the cooling capacity and increasing the ratio of water vapor to the water discharged from the fuel cell. For example, when the fuel cell 12 is at a high output, the increase in the cathode gas flow rate may be limited (smoothing process). For example, a rapid change in load may be suppressed (input smoothing). For example, the exit of the conduit 50 connecting the silencer and the outside of the vehicle to the outside of the vehicle may be closed, or the direction of the exit of the conduit 50 to the outside of the vehicle may be changed to a direction other than the direction of the following vehicle 18. Alternatively, at least one cathode gas outlet other than the pipe line 50 may be provided in the front, side, or vertical direction of the vehicle 10, and the cathode off gas may be discharged from the gas outlet.

  In the present embodiment, the sum of the amount of water discharged from the fuel cell 12 and the amount of liquid water located in the cathode offgas conduit 16 is acquired as the amount of water discharged to the rear of the vehicle 10. It is not something that can be done. The amount of liquid water located in the cathode offgas conduit 16 may be acquired as the amount of water discharged to the rear of the vehicle 10.

  In the present embodiment, when the inclination of the vehicle 10 increases, for example, traveling on an expressway rampway is considered.

In the present embodiment, the fuel cell is mounted as an energy source for propulsion. For example, the energy source may be a hydrogen engine that is supplied with hydrogen and generates water.
[Specific Processing of ECU of First Embodiment]
FIG. 4 is a flowchart showing specific processing of the ECU according to the first embodiment. The routine shown in FIG. 4 is periodically performed every sampling time n. In the routine shown in FIG. 4, first, the distance S between the vehicle 10 and the following vehicle 18 is acquired (step 100). As described above, the distance sensor 20 measures the distance from the following vehicle 18. In step 100, the ECU 22 acquires the distance S measured by the distance sensor 20.

  Subsequently, the relative speed v is acquired (step 102). Here, the relative speed v of the subsequent vehicle 18 with respect to the vehicle 10 (the direction in which the subsequent vehicle 18 approaches the vehicle 10 is positive) is acquired. In step 102, the time derivative of the distance S acquired in step 100 (the direction in which S decreases is positive) is acquired as the relative speed v.

Subsequently, a reference distance S0 is calculated (step 104). Here, the distance S with the following vehicle 18 is corrected. The corrected distance is set as a reference distance S0. If the relative speed v of the following vehicle 18 is large, the distance S between the vehicle 10 and the following vehicle 18 tends to be short. If the relative speed v of the following vehicle 18 is small, the distance S between the vehicle 10 and the following vehicle 18 tends to be long. Therefore, in consideration of the relative speed v of the following vehicle 18, the distance S is corrected so as to be the distance between the vehicle and the following vehicle 18 when water scattering is suppressed. In step 104, the reference distance S0 is calculated as follows. Here, H is a constant given in advance.
S0 = S−H × n × v
Subsequently, the temperature of the conduit 50 connecting the silencer and the outside of the vehicle is acquired (step 106). As described above, the pipe line 50 includes the thermometer 52 that measures the temperature of the cathode off-gas in the pipe line 50 at one end in contact with the outside of the vehicle 10. In this step 106, the ECU 22 acquires the temperature measured by the thermometer 52.

  Subsequently, the temperature of the fuel cell 12 is acquired (step 108). As described above, the fuel cell 12 includes the thermometer 30 that measures the temperature inside the fuel cell 12. In step 112, the ECU 22 acquires the temperature measured by the thermometer 30.

  Subsequently, the amount of water V0 generated by condensation in the cathode offgas conduit 16 is acquired (step 110). If the temperature difference in the cathode offgas conduit 16 is large, water is likely to condense in the cathode offgas conduit 16. If the temperature difference in the cathode offgas conduit is small, water is unlikely to condense in the cathode offgas conduit 16. Therefore, the amount of water condensed in the cathode offgas pipe 16 is acquired according to the temperature difference between the fuel cell 12 and the pipe 50. In step 110, the temperature difference between the temperature in the fuel cell 12 and one end of the conduit 50 in contact with the outside of the vehicle 10 is multiplied by a predetermined coefficient to obtain the amount of water V0 generated by condensation in the cathode offgas conduit 16.

  Subsequently, the amount of water generated by the fuel cell 12 is acquired (step 112). During the operation of the fuel cell 12, water is generated along with the power generation reaction. The current I of the fuel cell 12 corresponds to the amount of water generated by the fuel cell 12. In step 110, the ECU acquires the current I measured by the ammeter 32. Based on the current I, the amount of water produced by the fuel cell 12 is estimated.

  Subsequently, the amount of water V1 remaining in the cathode offgas pipeline 16 is acquired (step 114). A part of the water contained in the cathode offgas remains in the cathode offgas conduit 16 without being discharged outside the vehicle 10. Therefore, it is considered that a predetermined amount of the water generated in the fuel cell 12 remains in the cathode offgas pipe line 16. When the total amount of water generated in the fuel cell 12 is large, the amount of water flowing through the cathode offgas pipe 16 is large and the remaining amount of water V1 is large. When the total amount of water generated by the fuel cell 12 is small, the amount of water flowing through the cathode offgas conduit 16 is small and the remaining amount of water V1 is small. Further, when the temperature of the cathode offgas conduit 16 is high, the proportion of water vapor contained in the cathode offgas is low, and the amount of remaining water V1 is small. When the temperature of the cathode offgas conduit 16 is low, the ratio of liquid water contained in the cathode offgas is high, and the remaining amount of water V1 is large. In this step 114, the integrated value of the amount of water produced by the fuel cell 12 is calculated, and the total amount of water produced is estimated. An amount obtained by adding a predetermined multiple of the temperature of the cathode offgas conduit 16 and a predetermined multiple of the total amount of water generated is acquired as the amount of water V1 remaining in the cathode offgas conduit 16. The accumulated amount of water generated is reset to 0 at a predetermined timing.

  Subsequently, the amount V2 of liquid water present in the cathode offgas conduit 16 is acquired (step 116). Here, the sum of the amount of water V0 generated by condensation in the cathode offgas conduit 16 and the amount of remaining water V1 is acquired as the amount of liquid water V2 located in the cathode offgas conduit 16.

  Subsequently, the amount V3 of liquid water located in the fuel cell 12 is acquired (step 118). Liquid water may remain in the fuel cell 12 without being discharged outside the fuel cell 12. In some cases, water vapor contained in the cathode gas is condensed in the fuel cell 12 to generate liquid water. Liquid water remaining in the fuel cell and liquid water generated by condensation are located in the fuel cell. When the temperature of the fuel cell 12 is low, the ratio of liquid water located in the fuel cell is high and the amount of liquid water V3 is large. When the temperature of the fuel cell 12 is high, the proportion of water vapor located in the fuel cell is high, and the amount of liquid water V3 is small. Further, when the total amount of water generated by the fuel cell 12 is large, liquid water is likely to be located in the fuel cell 12. If the total amount of water generated by the fuel cell 12 is small, liquid water is unlikely to be located in the fuel cell 12. In step 118, the integral of the amount of water generated by the fuel cell 12 is calculated as the total amount of water generated by the fuel cell 12. The sum of the amount obtained by multiplying the total amount of water generated in the fuel cell 12 by a predetermined coefficient and the amount obtained by multiplying the temperature of the fuel cell 12 by a predetermined coefficient is acquired as the amount of liquid water V3.

  Subsequently, the amount of water V4 discharged to the rear of the vehicle 10 is acquired (step 120). The water in the fuel cell 12 is discharged to the rear of the vehicle 10 along with the flow of the cathode off gas. Accordingly, the liquid water located in the cathode offgas pipe 16 is discharged to the rear of the vehicle 10. In this step 120, first, the sum of the amount of water generated in the fuel cell 12 and the amount of liquid water V3 located in the fuel cell 12 is acquired as the amount of water discharged from the fuel cell to the cathode offgas conduit 16. The sum of the amount of water discharged from the fuel cell and the amount of liquid water V2 located in the cathode offgas conduit 16 is acquired as the amount of water V4 discharged rearward of the vehicle 10.

  Subsequently, the flow rate of the cathode off gas is acquired (step 122). In this step, the flow rate of the cathode gas is acquired by the operation of the compressor 34. The measured cathode gas flow rate is acquired as the cathode off-gas flow rate.

  Subsequently, the speed of the vehicle 10 is acquired (step 124). In this step, the speed acquired by the vehicle speed sensor 24 is acquired.

  Subsequently, the predicted scattering distance S1 to the rear of the vehicle 10 is acquired (step 126). The distance that the water scatters when the amount of water V4 is discharged to the rear of the vehicle is calculated as the predicted scatter distance S2. When the amount of discharged water V4 is large, the predicted scattering distance S1 is long. When the amount of discharged water V4 is small, the predicted scattering distance S1 is short. Furthermore, the water discharged to the rear of the vehicle 10 moves with the flow of the cathode off gas. When the flow rate of the cathode offgas is large, the momentum of the offgas discharged to the rear of the vehicle 10 is strong, and the predicted scattering distance S1 is long. When the flow rate of the cathode offgas is small, the momentum of the offgas discharged to the rear of the vehicle 10 is weak and the predicted scattering distance S1 is short. When the speed of the vehicle 10 is high, the flow rate of off-gas with respect to the ground is high, and the predicted scattering distance S1 is long. When the speed of the vehicle 10 is slow, the flow rate of off-gas with respect to the ground is slow, and the predicted scattering distance S1 is short. In this step 126, the amount of water V4 discharged to the rear of the vehicle 10, the flow rate of the cathode off gas, and the speed of the vehicle 10 multiplied by a predetermined coefficient are calculated as the predicted scattering distance S1 to the rear of the vehicle 10.

  Then, the reference distance S0 and the predicted scattering distance S1 are compared (step 128). It is determined whether the water discharged to the rear of the vehicle 10 may be scattered to the following vehicle 18. If the predicted scattering distance S1 is larger than the reference distance S0, it is determined that the water discharged to the rear of the vehicle 10 may be scattered to the following vehicle 18, and the cathode gas flow rate is decreased (step 130). Here, the cathode gas flow rate is made smaller than the cathode gas flow rate when the previous routine is executed. When the flow rate of the cathode gas is reduced, the gas momentum toward the rear of the vehicle 10 is weakened, and the scattering distance of water is suppressed. In step 128, if the predicted scattering distance S1 is not greater than the reference distance S0, it is determined that the water discharged to the rear of the vehicle 10 does not scatter to the following vehicle 18, and this routine is terminated.

  By performing the above routine, the amount of water actually discharged to the rear of the vehicle 10 can be correctly acquired in consideration of the amount of water present in the cathode offgas conduit 16. Therefore, the predicted scattering distance to the rear of the vehicle 10 can be accurately calculated. Therefore, according to the present embodiment, water scattering to the following vehicle 18 can be appropriately suppressed.

  In the present embodiment, in step 106, the temperature of the pipeline 50 is acquired by the thermometer 52 provided in the pipeline 50, but is not limited to this. The outside air temperature measured by the outside air temperature sensor 26 may be acquired as the temperature of the pipeline 50. In addition, when acquiring the temperature of the pipe line 50 with the thermometer 52, the external temperature sensor 26 does not need to be provided.

  In the present embodiment, in step 110, the amount of water V0 generated by the condensation is acquired according to the temperature difference between the fuel cell 12 and the conduit 50, but is not limited to this. For example, the water volume V0 may be acquired based on the temperature of the pipeline 50 or the outside air temperature. For example, the water amount V0 may be obtained based on the amount of water generated by the fuel cell and the temperature of the cathode offgas conduit 16. For example, the amount of water V0 may be obtained based on the amount of water generated by the fuel cell and the temperature of the cathode offgas conduit 16.

  In the present embodiment, in step 112, the amount of water generated in the fuel cell 12 is acquired based on the current I of the fuel cell 12, but is not limited thereto. For example, the amount of water generated by the fuel cell 12 may be acquired based on the output power of the fuel cell 12.

  In the present embodiment, in step 114, the remaining water amount V1 is calculated based on the total amount of water generated by the fuel cell 12, but is not limited thereto. It suffices if the amount of water V1 remaining in the cathode offgas pipe 16 can be acquired. For example, the remaining water volume V1 may be acquired based on the generated water volume.

  In the present embodiment, in step 114, the total amount of water generated is reset to 0 at a predetermined timing. The predetermined timing is a timing at which the liquid water located in the cathode offgas pipe line 16 is reduced. For example, the predetermined timing is a timing at which the volume of liquid water that can be located in the cathode offgas conduit 16 is reduced or the fuel cell 12 is scavenged.

  In the present embodiment, in step 116, the amount of liquid water V2 located in the cathode offgas conduit 16 is acquired based on the sum of the amount of water V0 generated by condensation and the amount of remaining water V1, but is not limited thereto. It is not a thing. The amount of water V0 generated by condensation or the amount of remaining water V1 may be obtained as the amount of liquid water V2 located in the cathode offgas conduit 16.

  In the present embodiment, in step 120, when the amount of water V4 discharged to the rear of the vehicle 10 is acquired, the sum of the amount of water generated by the fuel cell 12 and the amount of liquid water V2 of the fuel cell 12 is calculated as fuel. It is obtained as the amount of water discharged from the battery 12 to the cathode offgas conduit 12. The amount of water located in the fuel cell 12 may be acquired as the amount of water discharged from the fuel cell 12 to the cathode offgas conduit 12. For example, in addition to the sum of the amount of generated water and the amount of liquid water V2, the amount of humidification supplied to the cathode gas and / or anode gas supplied to the fuel cell 12 may be considered. For example, the amount of water present in the fuel cell 12 may be obtained by subtracting the amount of water discharged from the fuel cell in a form contained in the offgas from the sum of the amount of water generated and the amount of liquid water V2. For example, at least one of the amount of humidification to the fuel cell, the amount of generated water or the amount of liquid water V2 may be the amount of water present in the fuel cell 12.

  In the present embodiment, in step 130, the cathode gas flow rate is set lower than the cathode gas flow rate when the previous routine is executed, but the present invention is not limited to this. For example, it may be less than the cathode gas flow rate when it is determined that the predicted scattering distance S1 is not larger than the reference distance S0. For example, it may be less than the range of the cathode gas flow rate during normal fuel cell operation.

  In the present embodiment, the gas-liquid separator 42 or the thermometer 44 may not be provided. If the gas-liquid separator 42 is not provided, the water contained in the cathode offgas flows through the cathode offgas conduit 16 without being separated into liquid water and discharged. Also at this time, it is possible to acquire the amount of liquid water located in the cathode offgas conduit 16 by the flowchart shown in FIG. 4 and appropriately suppress the scattering of water to the following vehicle.

In the present embodiment, the tilt sensor 28 may be any sensor that can detect the tilt of the vehicle 10. For example, a height control auto leveling sensor or an acceleration sensor may be used. In addition, when not using the inclination of the vehicle 10 in FIG. 3, the inclination sensor 28 does not need to be provided.
[Modification of Embodiment 1]
A modification of the first embodiment will be described. FIG. 5 is a flowchart showing a modification of the first embodiment. In the flowchart shown in FIG. 5, the same parts as those in FIG. 4 are denoted by the same reference numerals, and detailed description thereof is omitted.

  In the routine shown in FIG. 5, following the acquisition of the temperature of the conduit 50 connecting the silencer and the outside of the vehicle in step 106, the temperature of the cathode off gas in the gas-liquid separator 42 is acquired (step 132). In this step, the temperature of the cathode off gas in the gas-liquid separator 42 measured by the thermometer 44 is acquired.

  Subsequently, the amount of water V5 generated by condensation in the pipe downstream of the gas-liquid separator 42 is acquired (step 134). The water present in the cathode off-gas line on the gas upstream side of the gas-liquid separator 42 can be separated into liquid water by the gas-liquid separator 42. The separated liquid water is discharged to the outside of the gas-liquid separator 42 (outside of the cathode offgas conduit 16: not shown). On the other hand, the liquid water located in the pipelines (the pipeline 46, the silencer 48, and the pipeline 50) on the gas downstream side of the gas-liquid separator 42 is easily discharged to the rear of the vehicle 10. Therefore, the amount of water located downstream of the gas-liquid separator 42 is considered as the amount of water discharged to the rear of the vehicle 10. In step 134, the temperature obtained by subtracting the gas temperature in the pipe line 50 from the temperature in the gas-liquid separator 42 is multiplied by a predetermined coefficient to obtain the amount of water V5 generated by condensation. When the gas temperature difference between the gas-liquid separator 42 and the pipe 50 is large, the amount of water V5 generated by condensation is large. If the gas temperature difference between the gas-liquid separator 42 and the pipe 50 is small, the amount of water V5 generated by condensation is small.

  Then, following the acquisition of the amount of generated water in the fuel cell 12 in step 112, the amount of water V6 remaining in the gas downstream side of the gas-liquid separator 42 is acquired (step 136). When the temperature of the gas-liquid separator 42 is high, the remaining amount of water V6 is small. When the temperature of the gas-liquid separator 42 is low, the remaining amount of water V6 is large. When the total amount of generated water is large, the remaining water amount V6 is large. If the total amount of water produced is small, the amount of water remaining is small. In this step 136, the accumulated water amount is multiplied by a predetermined coefficient to obtain the remaining water amount V6. Here, the total amount of produced water is calculated by integrating the produced water amount estimated from the current I, and the predetermined coefficient is a predetermined multiple of the temperature of the gas-liquid separator 42.

  Subsequently, the amount of liquid water V7 located in the gas downstream side of the gas-liquid separator 42 is acquired (step 138). Here, the sum of the amount of water V5 condensed in the pipeline downstream of the gas-liquid separator 42 and the amount of remaining water V6 is acquired as the amount of liquid water V7.

  Then, following the acquisition of the amount of liquid water V3 located in the fuel cell 12 in step 118, the amount of water V4 discharged to the rear of the vehicle 10 is acquired (step 140). As described above, the liquid water located in the pipelines (the pipeline 46, the silencer 48, and the pipeline 50) on the gas downstream side of the gas-liquid separator 42 is easily discharged to the rear of the vehicle 10. Therefore, the sum of the amount of liquid water V7 located in the pipe downstream of the gas-liquid separator 42, the amount of liquid water V3 of the fuel cell 12 and the amount of water generated by the fuel cell 12 is moved to the rear of the vehicle 10. Acquired as the amount of discharged water V4.

  By performing the above routine, the amount of water that is truly discharged to the rear of the vehicle 10 can be accurately acquired by taking into account the liquid water located in the pipeline downstream of the gas-liquid separator 42. Therefore, water scattering to the following vehicle 18 can be appropriately suppressed.

  In the present embodiment, in step 136, the amount of water V6 remaining in the pipe downstream of the gas-liquid separator 42 is acquired based on the temperature of the gas-liquid separator 42. However, the present invention is not limited to this. is not. Depending on the temperature of the pipe 50, the remaining water volume V6 may be acquired.

In the present embodiment, in steps 134 to 138, the amount of liquid water located in the pipeline downstream of the gas-liquid separator 42 is acquired, but the present invention is not limited to this. The amount of liquid water existing in the pipeline 46 connecting the gas-liquid separator and the silencer, the silencer 48, and the pipeline 50 connecting the silencer and the outside of the vehicle may be obtained. In the silencer 48, water tends to accumulate in the glass wool part. The water collected in the silencer 48 is easily stored outside the moving body without being stored in the gas-liquid separator 42. By acquiring the amount of liquid water in the silencer 48, the amount of water discharged to the outside of the moving body can be determined accurately.
[Embodiment 2.]
A second embodiment will be described. The configuration of the second embodiment is the same as the configuration of the first embodiment shown in FIGS. FIG. 6 is a diagram illustrating a flowchart of the second embodiment. In the flowchart shown in FIG. 6, the same parts as those in FIG. 4 are denoted by the same reference numerals, and detailed description thereof is omitted.

  In the routine shown in FIG. 6, following the acquisition of the amount of liquid water V2 located in the cathode offgas conduit 16 in step 116, the inclination a of the vehicle 10 is acquired (step 141). The inclination a of the vehicle 10 acquired by the inclination sensor 28 is acquired.

  Subsequently, an amount Vf of liquid water that can be located in the cathode offgas conduit 16 is acquired (step 142). Here, the amount of liquid water Vf that can be located in the cathode offgas pipeline 16 is the maximum volume of liquid water that can be located in the cathode offgas pipeline 16. As described above, the amount Vf of liquid water that can be located in the cathode offgas pipe line 16 varies depending on the inclination of the vehicle 10. When the absolute value (| a |) of the slope a is large, the volume of liquid water that can be accumulated in the cathode offgas pipe 16 is small. When the absolute value (| a |) of the inclination a is small, the volume of liquid water that can be accumulated in the cathode offgas conduit 16 is large. In this step 144, the amount Vf of liquid water is acquired with reference to a map representing the amount of water that can be located with respect to the inclination a. Here, the cathode offgas conduit 16 has a preset structure and has a predetermined volume.

  Subsequently, the amount of liquid water V2 located in the cathode offgas pipe line 16 is compared with the amount of liquid water Vf that can be located (step 144). The maximum volume of liquid water located in the cathode offgas conduit 16 is the amount of liquid water Vf that can be located. Therefore, when the amount of liquid water V2 is larger than the amount of liquid water Vf that can be located, the amount of liquid water V2 that is located in the cathode offgas pipe 16 is corrected to become the amount of liquid water Vf that can be located (step). 146). If the amount of liquid water V2 is not larger than the amount of liquid water Vf that can be located, the amount of liquid water V2 to be located is not corrected.

  By performing the above routine, the amount of liquid water present in the cathode offgas pipe 12 can be accurately acquired. Therefore, the amount of water discharged to the outside of the vehicle 10 can be accurately acquired, and water discharge can be appropriately suppressed.

In the present embodiment, in step 142, the amount Vf of liquid water that can be located in the cathode offgas conduit 16 is calculated based on the inclination a of the vehicle 10, but is not limited thereto. In the case where the cathode offgas pipe 16 is provided in the vehicle 10 with an inclination b (the vehicle front rise is positive), the amount of liquid water Vf that can be located is acquired based on the sum of the inclination b and the inclination a. Good.
[Embodiment 3.]
A third embodiment will be described. The configuration of the third embodiment is the same as the configuration of the first embodiment shown in FIGS. 1 and 2, and detailed description thereof is omitted. FIG. 7 is a flowchart showing specific processing of the third embodiment. In the flowchart of FIG. 7, the same parts as those in the flowchart of FIG. 4 are denoted by the same reference numerals, and detailed description thereof is omitted.

  In the routine shown in FIG. 7, the inclinations a1 and a2 of the vehicle 10 are acquired following the acquisition of the amount of liquid water V2 located in the cathode offgas conduit 16 in step 116 (step 148). In step 148, first, the inclination a1 of the vehicle acquired in the previous routine and the inclination a2 of the vehicle 10 in the current routine are acquired by the inclination sensor 28. Here, in the first routine, it is acquired as a1 = 0.

  Subsequently, a change amount ΔVf of the amount of liquid water that can be located in the cathode offgas pipeline 16 is acquired (step 150). As described above, when the inclination a increases, the liquid water located in the cathode offgas conduit 16 is easily discharged in the rear direction of the vehicle 10. When the inclination a decreases, the liquid water located in the cathode offgas conduit 16 is likely to move toward the fuel cell 12. If the slope a> 0, the car goes up. As the slope a increases, the volume of liquid water that can be located in the cathode offgas conduit 16 decreases. It is assumed that this reduced volume of liquid water (change amount ΔVf) is discharged to the rear of the vehicle 10. Here, the amount of change Δf is the volume of the decrease in liquid water that can be located in the cathode offgas conduit 16 when the slope a increases (where a> 0). In this step 150, first, the amount Vf1 of liquid water that can be located in the cathode offgas conduit 16 is obtained from the map with respect to the inclination a1 in the previous routine. Subsequently, the amount Vf2 of liquid water that can be located in the cathode offgas conduit 16 is acquired from the map with respect to the inclination a2 in the current routine. And-(Vf2-Vf1) is acquired as change amount (DELTA) Vf.

  Then, following acquisition of the liquid water amount V3 of the fuel cell, the water amount V4 discharged to the rear of the vehicle 10 is acquired (step 152). As the inclination a increases (a> 0), the change amount ΔVf of liquid water is discharged from the cathode offgas conduit 16 to the rear of the vehicle 10. Therefore, the amount of water V4 discharged to the rear of the vehicle 10 is acquired based on the change amount ΔVf. When the change amount ΔVf is large, the discharged water amount V4 is large. When the change amount ΔVf is small, the discharged water amount V4 is small. In step 152, the sum of the amount of liquid water V2 located in the cathode offgas conduit 16, the amount of water generated by the fuel cell, the amount of liquid water V3 located in the fuel cell, and the amount of change ΔVf is Is obtained as the amount of water V4 discharged.

  By performing the above routine, the amount of water discharged to the rear of the vehicle 10 can be accurately acquired based on the increase in the inclination a. Therefore, discharge of water can be appropriately suppressed, and scattering of water to the following vehicle 18 can be suppressed.

  In the present embodiment, in step 148, the change amount Δa of the inclination a of the vehicle 10 is acquired based on the inclination a of the vehicle measured by the inclination sensor 28, but is not limited thereto. Instead of the tilt sensor 28, a three-axis sensor, a two-axis sensor, a pitch sensor, or a yaw rate sensor may be provided, and the change amount Δa may be directly acquired from these measured values.

  In the present embodiment, in step 150, the amount of change in liquid water that can be located in the cathode offgas conduit 16 is calculated. In addition, the amount of change in the amount of liquid water that can be located in the fuel cell 12 may be acquired, and the amount of water discharged to the rear of the vehicle 10 may be acquired based on the amount of change. Specifically, as the inclination a increases, the volume of liquid water that can be located in the fuel cell 12 decreases. By this reduced volume, the liquid water located in the fuel cell 12 moves to the cathode offgas conduit and is discharged to the rear of the vehicle 10.

  In addition, in embodiment, although the distance with the following vehicle 18 is measured, it is not restricted to this. The distance from the cathode gas outlet 16 surrounding the cathode gas outlet may be measured. For example, when the cathode gas outlet of the cathode offgas conduit 16 is provided in front of the vehicle 10, the distance from the object in front of the vehicle 10 may be measured, and when the cathode gas outlet is provided at the side of the vehicle 10, What is necessary is just to measure the distance with the object of vehicle 10 side.

  In the embodiment, the vehicle 10 is not limited to a vehicle, and may be a moving body. For example, a two-wheeled vehicle, a trailer, a railway vehicle, or a ship may be used. Similarly, the following vehicle 18 is not limited to the vehicle, and may be any object located around the cathode offgas pipe 16 outlet. It may be a moving body, a person or a building.

FIG. 1 is a diagram for explaining a vehicle according to a first embodiment. FIG. 2 is an enlarged view of the periphery of the fuel cell 12 and the cathode offgas conduit 16. FIG. 3 is a diagram showing the relationship between the amount of liquid water located in the silencer 48 and the inclination of the vehicle. FIG. 4 is a flowchart showing specific processing of the ECU according to the first embodiment. FIG. 5 is a flowchart showing a modification of the first embodiment. FIG. 6 is a flowchart showing specific processing of the second embodiment. FIG. 7 is a flowchart showing specific processing of the third embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Vehicle 12 Fuel cell 16 Cathode off-gas line 20 Distance sensor 22 ECU
24 Vehicle speed sensor 28 Tilt sensor 30 Thermometer 32 Ammeter 34 Compressor 42 Gas-liquid separator 44 Thermometer 48 Silencer 50 Pipe line connecting the silencer and the outside of the vehicle 52 Thermometer 54, 56 Liquid water that can be located in the silencer volume

Claims (9)

A mobile body equipped with an energy source for propulsion composed of a fuel cell or a hydrogen engine that generates water by receiving a supply of gas containing hydrogen,
An exhaust gas line connecting the energy source and the outside of the moving body, and discharging exhaust gas containing water from the energy source to the outside of the moving body;
Pipeline water volume acquisition means for acquiring the amount of water located in the exhaust gas pipeline;
Based on the amount of water acquired by the pipeline acquisition means, discharged water suppression means for suppressing water discharged from the energy source to the outside of the moving body,
A moving object comprising: The moving body according to claim 1,
Water quantity acquisition means for acquiring the amount of water located in the energy source,
The discharged water suppression means suppresses water discharged from the energy source to the outside of the mobile body based on the sum of the water amount acquired by the water amount acquisition means and the water amount acquired by the pipeline water amount acquisition means. A moving body characterized by. The moving body according to claim 1 or 2,
A distance acquisition means for acquiring a distance between an object located around the exhaust gas pipe outlet and the moving body;
The discharged water suppression means calculates the flight distance of water discharged from the mobile body based on the sum of the water amount acquired by the water amount acquisition means and the water amount acquired by the pipe water amount acquisition means. Suppressing the water discharged from the energy source to the outside of the mobile body based on the difference between the distance acquired by the distance acquisition unit and the flight distance calculated by the water scattering distance calculation unit A moving body characterized by. The moving body according to any one of claims 1 to 3,
The pipe water quantity acquisition means includes a pipe temperature acquisition means for acquiring the temperature of the exhaust gas pipe. The mobile body according to claim 4,
The pipe water amount acquisition means includes temperature acquisition means for acquiring the temperature of an energy source, and based on the difference between the temperature acquired by the temperature acquisition means and the temperature acquired by the pipe temperature acquisition means, A moving body characterized by acquiring the amount of water located in an exhaust gas pipe line. The moving body according to claim 1,
The exhaust gas pipeline includes a gas-liquid separator that separates exhaust gas into liquid and gas,
The moving body characterized in that the pipe water quantity acquisition means includes a gas / liquid separator pipe water quantity acquisition means for acquiring the amount of water located in an exhaust gas pipe connecting the gas-liquid separator and the outside of the moving body. The moving body according to claim 1,
The exhaust gas line is equipped with a silencer,
The pipe water quantity acquisition means includes a silencer water quantity acquisition means for acquiring a water quantity located in a silencer provided in the exhaust gas pipe. The moving body according to claim 1,
The moving body characterized in that the pipe water quantity acquisition means includes vehicle inclination detection means for detecting the inclination of the moving body. A fuel cell according to any one of claims 3-8,
The moving body includes the exhaust gas pipe outlet at the rear of the moving body,
The distance acquisition means acquires a distance between an object located behind the moving object and the moving object.

Images