JP4528591B2 - Fuel cell motorcycle - Google Patents

Description

  The present invention relates to a fuel cell two-wheeled vehicle that travels with electric power obtained by supplying a reaction gas and hydrogen gas to a fuel cell, and more particularly to a fuel cell two-wheeled vehicle equipped with a liquid cooling type cooling system for cooling the fuel cell.

  Recently, fuel cell vehicles have been developed in which electric power generated by a fuel cell system is supplied to a motor and wheels are driven by this motor. In the fuel cell system, power generation is performed in a fuel cell stack (hereinafter simply referred to as a fuel cell) by a chemical reaction of hydrogen gas and oxygen as a reaction gas. Here, oxygen is taken in from the air through a compressor, and hydrogen gas is supplied from a high-pressure fuel cylinder.

  By the way, although the fuel cell generates heat by a chemical reaction, in order to perform efficient power generation, it is necessary to dissipate and cool excess heat to maintain the fuel cell in an appropriate temperature range. In order to efficiently dissipate heat, for example, a fuel cell vehicle disclosed in Patent Document 1 cools the fuel cell using a water-cooled cooling system, and heats the heated cooling water with a radiator. .

JP-A-8-192939

  The cooling liquid in the cooling system absorbs heat from the fuel cell and is heated to vaporize the gas dissolved in the cooling liquid, generating bubbles, and injecting, replenishing, or replacing the cooling liquid In some cases, air bubbles may mix and stay without being fully removed. Bubbles have a low heat transfer rate and impede the flow of the coolant, and there is a concern that cooling efficiency may be reduced by mixing in the cooling system.

  The present invention has been made in view of such problems, and an object of the present invention is to provide a fuel cell two-wheeled vehicle that can quickly and reliably remove bubbles mixed in a cooling system.

A fuel cell two-wheeled vehicle according to the present invention is a fuel cell two-wheeled vehicle equipped with a liquid cooling type cooling system that travels with electric power obtained by supplying reaction gas and hydrogen gas to the fuel cell, and cools the fuel cell.
A liquid cooling system for cooling the fuel cell;
At least one of the devices constituting the cooling system has a gas vent for removing gas to the outside.

  Bubbles mixed in the cooling system are more likely to stay in the equipment with a complicated internal structure than a simple path pipe, etc., and by providing a degassing part in such equipment, the bubbles can be removed quickly and reliably. it can.

  Because of the specific gravity, bubbles have a property of gathering upward, and therefore the gas venting part is preferably provided in the upper part of the device.

  Furthermore, it is preferable that a side stand that tilts and parks the vehicle body is provided, and the gas venting part is provided on the side opposite to the side stand. When the fuel cell motorcycle is parked with the side stand tilted, the bubbles are collected on the side opposite to the side stand, thereby enabling more reliable gas venting. In addition, the surface opposite to the side stand is slightly upward, so that the operator can operate the gas venting portion in a natural posture, and is less likely to be shaded by the fuel cell motorcycle itself, thereby improving maintenance.

  In this case, when the degassing part is provided at the highest position of the device in a state where the side stand is parked, bubbles are collected in the vicinity of the degassing part, and further degassing is possible. It becomes.

  When the gas vent is provided on the outermost side of the device to be attached and is directed outward, it is possible to prevent the coolant from adhering to the device provided on the inner side or the opposite side.

  If the degassing part is capable of opening and closing with a minute and continuous opening, it is easy to adjust the discharge amount of bubbles, and an unnecessary large amount of coolant is prevented from being discharged.

  Bubbles mixed in the cooling system are more likely to stay in a device having a complicated internal structure than a simple pipe line. The fuel cell two-wheeled vehicle according to the present invention can quickly and surely remove bubbles in the cooling system by providing such a device with a gas vent.

  In addition, when a side stand that tilts and parks the vehicle body is provided, if the gas vent is provided at the highest position of each device on the side opposite to the side stand, bubbles are In other words, the gas is collected in the vicinity of the degassing portion on the opposite side, so that more degassing can be performed. In addition, the surface opposite to the side stand is slightly upward, so that the operator can operate the gas venting portion in a natural posture, and is less likely to be shaded by the fuel cell motorcycle itself, thereby improving maintenance.

  DESCRIPTION OF EMBODIMENTS Hereinafter, a fuel cell two-wheeled vehicle according to the present invention will be described with reference to FIGS. Hereinafter, the mechanisms provided on the left and right sides of the fuel cell two-wheeled vehicle 10 will be described separately by attaching “L” to the number sign of the left one and “R” to the number sign of the right one.

  As shown in FIGS. 1 to 3, a scooter type fuel cell two-wheeled vehicle 10 as a fuel cell two-wheeled vehicle according to the present embodiment is equipped with a fuel cell 12 and travels using electric power obtained from the fuel cell 12. To do. The fuel cell 12 generates electric power by reacting hydrogen gas supplied to the anode electrode and reaction gas (air) supplied to the cathode electrode. In the present embodiment, a well-known fuel cell 12 is employed, and therefore will not be described in detail here. The fuel cell two-wheeled vehicle 10 includes a front wheel 14 that is a steering wheel, a rear wheel 16 that is a driving wheel, a handle 18 that steers the front wheel 14, a frame 20, and a seat 22 on which a driver and a passenger are seated.

  The fuel cell two-wheeled vehicle 10 has a water cooling type cooling system 79 (see FIG. 4) for cooling the fuel cell 12 and maintaining it in an appropriate temperature range so that power generation can be performed efficiently.

  The frame 20 includes a head pipe 24 that pivotally supports fork-type front suspensions 23R and 23L at a front portion, and a pair of upper down frames that are connected to the head pipe 24 and are inclined downward toward the rear of the vehicle body. 26R, 26L and a pair of lower down frames 28R, 28L. The frame 20 further extends from the upper down frames 26R and 26L continuously upward and rearward toward the rear of the vehicle body and from the lower down frames 28R and 28L continuously toward the rear wheel 16. Lower frames 32R and 32L, and vertical frames 34R and 34L that connect the rear ends of the lower frames 32R and 32L and the substantially middle portions of the upper frames 30R and 30L.

  The fuel cell 12 is provided at a substantially central portion of the vehicle body. Specifically, the fuel cell 12 is mounted on a rear portion of an area defined by the upper frames 30R and 30L, the lower frames 32R and 32L, and the vertical frames 34R and 34L. Arranged slightly upward. The fuel cell 12 is a relatively heavy part among the parts constituting the fuel cell two-wheeled vehicle 10. By providing the fuel cell 12 at a substantially central portion of the vehicle body, a suitable weight balance of the fuel cell two-wheeled vehicle 10 can be obtained, and the running performance can be obtained. Will improve.

  In addition, an electric pump 90 and the like to be described later are provided in front of the fuel cell 12 in a region defined by the upper frames 30R and 30L, the lower frames 32R and 32L, and the vertical frames 34R and 34L. A seat 22 is provided above the upper frames 30R and 30L, and a tail lamp (not shown) is provided at the rear end. A headlight 36 is provided in front of the head pipe 24 and is covered with a front cover 37.

  A rotary drawer-type side stand 39 is provided on the lower left side of the center of the vehicle body. The side stand 39 can be rotated by about 90 ° around the shaft 39a of the lower frame 32L when operated by a driver who gets off the vehicle, and is disposed so as to be raised rearward along the lower frame 32L when stored. Is done. Further, when the vehicle is pulled out, the vehicle body extends obliquely downward on the left side and tilts to the left side, and can be parked (see FIG. 5). The fuel cell two-wheeled vehicle 10 includes a center stand 41 in addition to the side stand 39, and can be parked while the vehicle body is upright.

  The front wheel 14 is rotatably supported at the lower ends of the front suspensions 23R and 23L. A handle 18 is connected to the upper portions of the front suspensions 23R and 23L, and a meter 38 is provided at the center of the handle 18. The rear wheel 16 is supported by a swing arm 42 that is rotatable about a pivot 40 provided on the vertical frames 34R and 34L, and an in-wheel motor 44 and a motor driver 46 that drives the in-wheel motor 44 are provided. ing.

  The in-wheel motor 44 and the motor driver 46 are water-cooled and have high efficiency and high output. A rear suspension 48 is provided in a lower portion of the fuel cell 12 so as to extend in the vehicle length direction, and both ends thereof are rotatably connected to the lower frames 32R and 32L and the swing arm 42. Although the fuel cell 12 is designed to have a minimum ground clearance, the area between the fuel cell 12 and the ground can be effectively used by providing the rear suspension 48 below the fuel cell 12. In addition, the center of gravity of the fuel cell motorcycle 10 can be lowered.

  Next, the fuel cell two-wheeled vehicle 10 is a fuel cell system for generating power in the fuel cell 12, a fuel cylinder 50 for storing hydrogen gas supplied to the fuel cell 12 in a high pressure state, and an intake port that opens rearward. A resonator 54 for reducing the intake noise from 52 and an air cleaner 56 for taking in outside air through the resonator 54 are provided. The air inlet 52 is provided on the upper surface of the front portion of the resonator 54, and is gently bent by approximately 90 ° and opened rearward.

  The fuel cell motorcycle 10 further cools the reaction gas compressed by the compressor 58 and a compressor 58 (also referred to as a supercharger, a pump, or a charger) that compresses the air purified by the air cleaner 56 into a reaction gas. In order to adjust the pressure inside the fuel cell 12, an intercooler 59, a humidifier 60 for exchanging moisture between the reaction gas supplied to the fuel cell 12 and the spent reaction gas discharged from the fuel cell 12. Further, a back pressure valve 62 provided on the discharge side of the humidifier 60, a dilution box 64 for diluting the used reaction gas with the used oxygen gas, and the diluted reaction gas as exhaust gas are silenced and discharged to the atmosphere. And a silencer 66. The fuel cell two-wheeled vehicle 10 includes a secondary battery (not shown) provided near the front fork as an auxiliary power source for the fuel cell system.

  The fuel cylinder 50 has a hemispherical cylindrical shape at both ends, and is provided at a position offset to the right from the center in the rear part of the vehicle body. Specifically, the fuel cylinder 50 extends in the vehicle length direction when viewed from above (see FIG. 3), and rises rearward along the seat 22 and the upper frame 30R when viewed from side (see FIG. 1). Is provided. The fuel cylinder 50 is a relatively large part among the parts constituting the fuel cell two-wheeled vehicle 10, but is provided at a position offset from the center line, so that it hardly overlaps with the rear wheel 16 in a top view. Sufficient vertical suspension stroke of the rear wheel 16 can be secured. Thereby, it becomes easy to relieve the impact from the road surface, and the riding comfort of the fuel cell motorcycle 10 can be improved.

  The dilution box 64 is provided at the lower end between the pair of lower down frames 28R and 28L, and is disposed at a position lower than the fuel cell 12. Therefore, the moisture generated in the fuel cell 12 is easily collected in the dilution box 64, and the accumulated moisture is discharged from the lower surface portion of the dilution box 64.

  A first exhaust pipe 70 is connected to the dilution box 64, and exhaust gas is discharged from the first exhaust pipe 70. The first exhaust pipe 70 extends from the front of the lower frame 32L slightly toward the rear through the inside of the lower frame 32L, and the rear end communicates with one end of the second exhaust pipe 72. The second exhaust pipe 72 is bent slightly upward from the rear end portion of the lower frame 32 </ b> L and directed obliquely upward to the rear, and is connected to the silencer 66.

  The silencer 66 has a substantially rectangular vertical flat shape, is offset to the left from the center in the rear part of the vehicle body, and is provided to extend in the vehicle length direction at a position higher than the rear wheel 16. A discharge port 66 a for discharging exhaust gas from the silencer 66 is provided below the rear end of the silencer 66. The discharge port 66a is located slightly rearward of the axle 16a of the rear wheel 16 in the vehicle length direction.

  The resonator 54 has a substantially rectangular vertical flat shape and is provided on the right side of the fuel cylinder 50. The rear end of the resonator 54 and the rear end of the air cleaner 56 are connected by a resin pipe 75.

  The air cleaner 56 has a slightly flat shape and is disposed so as to rise rearward below the rear portion of the fuel cylinder 50. The air that has passed through the air cleaner 56 is introduced into the right end of the compressor 58 through a short resin pipe 76. The compressor 58 is provided so as to extend in the vehicle width direction, and the right end portion is located below the central portion of the fuel cylinder 50. The humidifier 60 has a long shape in the vehicle width direction and is provided between the compressor 58 and the fuel cell 12.

  The intercooler 59 is provided below the front part of the fuel cylinder 50, and the air inlet and the air outlet are connected to the compressor 58 and the humidifier 60, respectively. As described above, the intercooler 59 cools the outside air compressed by the compressor 58 and supplies it to the humidifier 60. At the cold start, the intercooler 59 and the humidifier 60 are switched by driving the bypass valve 78. Compressed outside air can be supplied to the fuel cell 12 without going through.

  Next, a water-cooled cooling system 79 for cooling the fuel cell 12 and maintaining it in an appropriate temperature range will be described with reference mainly to FIG.

  The cooling system 79 cools the first radiator 80 and the second radiator 82 that cools the cooling water heated by the fuel cell 12 by radiating the cooling water with the cooling fins, and cools the cooling fins of the first radiator 80 with air. Fan 84, two cooling fans 86 and 88 that allow air to flow to the cooling fins of second radiator 82, electric pump 90 that circulates cooling water, and a circulation path of cooling water during warm-up operation and overcooling , An ion exchanger 94 that removes ions in the cooling water to prevent a ground fault of the fuel cell 12, and a coolant injection pipe 95 for injecting the coolant into the cooling system 79.

  Each of the cooling fans 84, 86, and 88 sucks air from the first radiator 80 and the second radiator 82 on the back surfaces of the first radiator 80 and the second radiator 82, and the air flows as indicated by an arrow A. Among these, the wind generated by the cooling fan 88 is set to hit the electric pump 90.

  The electric pump 90 includes a motor 90 a, and the pump portion is operated by electrically rotating the motor 90 a to circulate the cooling water in the cooling system 79. The suction port 90b of the electric pump 90 and the cooling water discharge port 12a of the fuel cell 12 are connected by a pipe 96a, and the discharge port 90c of the electric pump 90 and the cooling water discharge port 12a of the fuel cell 12 are connected by a pipe 96b. Has been.

  The lower part of the 1st radiator 80 and the upper part of the 2nd radiator 82 are connected by two right and left pipe lines 96c and 96d (refer to Drawing 5). One end of the thermostat 92 is connected to the lower portion of the second radiator 82 by a pipe 96e, and the other end is connected to the cooling water inlet 12b of the fuel cell 12 by a pipe 96f. A pipe 96 a between the electric pump 90 and the first radiator 80 branches to form a pipe 96 g and is connected to the thermostat 92. A pipe 96 a between the fuel cell 12 and the electric pump 90 branches to form a pipe 96 h and is connected to a thermostat 92 via an ion exchanger 94.

  During the warm-up operation and the supercooling, the thermostat 92 causes the pipe line 96g and the pipe line 96f to communicate with each other and shuts the pipe line 96e. Thereby, the cooling water discharged from the electric pump 90 flows into the pipe 96 g and does not pass through the first radiator 80 and the second radiator 82. Therefore, the cooling water is not unnecessarily cooled and warm-up can be performed quickly.

  On the other hand, during normal operation, the thermostat 92 causes the conduit 96e and the conduit 96f to communicate with each other and shuts off the conduit 96g. Thereby, the heated cooling water discharged from the electric pump 90 is radiated and cooled by the first radiator 80 and the second radiator 82, and then is guided to the cooling water inlet 12b of the fuel cell 12 through the thermostat 92. . Cooling water heated by cooling a power generation cell (not shown) in the fuel cell 12 is discharged from the cooling water discharge port 12a, led to the electric pump 90, and circulated. A part of the cooling water circulates through the ion exchanger 94.

  As shown in FIG. 5, the first radiator 80 has a substantially square plate shape and is provided on the front surface of the head pipe 24, and a cooling fan 84 is provided on the back surface of the first radiator 80. The second radiator 82 has a plate shape whose height and area are approximately twice that of the first radiator 80, and is provided in front of the lower down frames 28R and 28L along the lower down frames 28R and 28L. Yes. A cooling fan 86 is provided at the upper part of the rear surface of the second radiator 82, and a cooling fan 88 is provided at the lower part of the rear surface. The electric pump 90 is provided between the cooling fan 88 and the fuel cell 12. The ion exchanger 94 has a vertically long rectangular column shape, and is provided along the lower down frame 28R on the right side.

  As shown in FIGS. 1 to 3, the coolant injection pipe 95 branches upward from a branch joint 98 at a substantially middle portion of the pipe 96 b. The coolant injection pipe 95 passes between the left front suspension 23L and the head pipe 24 while extending upward in parallel with the upper side of the pipe 96b, passes through the front of the head pipe 24, It extends between the front suspension 23R and the head pipe 24 and extends in a substantially spiral shape so as to wind up to the rear side of the head pipe 24. The distal end portion of the coolant injection pipe 95 faces obliquely upward rearward and is located on the vehicle width central axis in the vicinity rear portion of the head pipe 24. That is, the coolant injection pipe 95 is set as a path that winds so as to surround both side portions, the front portion, and the left rear portion of the shaft of the head pipe 24 in plan view.

  A coolant supply port member 100 is provided at the tip of the coolant injection pipe 95, and an opening 100a (see FIG. 4) that opens obliquely upward in the coolant supply port member 100 is formed in the coolant injection pipe. 95.

  The coolant supply port member 100 is located at a position higher than the connection port 80 a for the first radiator 80 and is provided at the highest position among all the pipelines of the cooling system 79. Specifically, the coolant supply port member 100 is provided at a position higher than the upper end portion of the head pipe 24.

  The coolant supply port member 100 is fixedly supported by plate-like stays 102R and 102L having bolts fixed in the vicinity of the upper ends of the upper down frames 26R and 26L. A hydrogen sensor 108 (see FIG. 4) for detecting the hydrogen gas in the coolant injection pipe 95 is provided on the inner surface of the cap 104 that closes the opening 100a (the surface that closes the opening 100a), and the cap 104 is a hydrogen sensor. The function of the mounting member 108 is also used, and the number of parts is reduced.

  The hydrogen sensor 108 uses the heat generated when the hydrogen gas to be detected comes into contact with a catalyst such as platinum, and has an electric resistance between the detection element that has reached a high temperature and the temperature compensation element at ambient temperature. Hydrogen gas is detected based on the difference. The detection signal of the hydrogen sensor 108 is supplied to an ECU (Electric Control Unit) (not shown) and subjected to predetermined processing.

  The cooling system 79 is provided with four gas vents 120a, 120b, 120c and 120d for removing gas to the outside.

  As shown in FIG. 6, the gas vents 120a, 120b, 120c and 120d are provided in the upper right part of the second radiator 82, the thermostat 92, the ion exchanger 94 and the fuel cell 12 in order, It communicates with the upper right corner of the space. The degassing parts 120a and 120c are directed obliquely upward to the right, and the degassing parts 120b and 120d are directed to the right side.

  Further, the gas venting portions 120a to 120c are provided on the uppermost side and the rightmost side of each device to be attached (that is, the second radiator 82, the thermostat 92, and the ion exchanger 94), and are separated from the nearby electrical components. In the position. That is, the gas venting portions 120a and 120c are provided on the right outside of the cooling fan 86, which is a nearby electrical component, and the gas vent portion 120b is an electric pump 90, which is a nearby electrical component. Rather than the right outer side. A radiator cap 122 is provided in the upper right part of the first radiator 80.

  As shown in FIG. 7, the gas vent 120a has a boss 124 having a female screw hole 124a penetrating therein, a packing 126 disposed on the upper surface of the boss 124, and a female screw hole 124a sandwiching the packing 126. And a bolt 128 to be screwed. The boss 124 has a low cylindrical shape, and its lower peripheral edge is welded to the upper right upper portion of the second radiator 82, and a lower hole 82a provided in the second radiator 82 and a female screw hole 124a communicate with each other. The bolt 128 is screwed into the female screw hole 124a via the packing 126, so that the gas vent 120a keeps the lower hole 82a fluid-tight. Although not shown in the enlarged view, the other gas vents 120b to 120d have the same structure as the gas vent 120a and communicate with the thermostat 92, the ion exchanger 94, and the upper right corner of the internal space of the fuel cell 12. It is kept liquid-tight by the packing 126 and the bolt 128.

  In the fuel cell motorcycle 10 configured in this way, as described above, the coolant in the cooling system 79 absorbs heat from the fuel cell 12 and is heated to vaporize the gas dissolved in the coolant. May generate bubbles. Further, when injecting, replenishing, or exchanging the cooling liquid, bubbles may be mixed and stay without being fully removed. Such bubbles are likely to stay in the second radiator 82, the thermostat 92, the ion exchanger 94, and the fuel cell 12, whose internal shapes are more complicated than the pipe lines 96 a to 96 h. Bubbles, which are gases, have different thermal conductivity, compressibility, chemical characteristics, and the like as compared with the coolant, and there is a concern that the efficiency of these devices may be reduced. Therefore, in order to remove these bubbles quickly and reliably, the following degassing operation is performed.

  That is, after the side stand 39 is pulled out, the vehicle body is tilted to the left and parked as shown in FIG. Accordingly, the gas venting portions 120a, 120b, 120c, and 120d are disposed at the highest positions in the second radiator 82, the thermostat 92, the ion exchanger 94, and the fuel cell 12, respectively. Since the specific gravity is small, the bubbles float up in the coolant and are collected at positions immediately below the respective gas vents 120a, 120b, 120c and 120d.

  In addition, the right side surface of the fuel cell motorcycle 10 is slightly upward, and the operator can operate the gas vents 120a to 120d in a natural posture, and is less likely to be shaded by the fuel cell motorcycle 10 itself. improves.

  Next, as shown in FIG. 8, the bolt 128 of the gas vent 120 a is slightly loosened using a tool 130. As a result, the bubbles collected at the upper right part of the second radiator 82 are subjected to the water pressure of the coolant in the cooling system 79 and are discharged to the outside as bubbles 132, so-called degassing. If this state is maintained for a while and the bubbles 132 are discharged, the bubbles 132 disappear when all the bubbles in the second radiator 82 are discharged, and the cooling liquid itself leaks out as a liquid. The operator visually confirms this change, retightens the bolt 128 with the tool 130, and closes the gas vent 120a. Thereafter, the same degassing operation is performed for the degassing portions 120b to 120d.

  The gas venting portions 120a to 120d can be opened and closed continuously according to the rotation angle of the tool 130, and the packing 126 is interposed in the opened portion, so that an appropriate throttling function is achieved. The opening and closing operation with a minute and continuous opening is possible. Therefore, it is easy to adjust the discharge amount of the bubbles 132, and an unnecessary large amount of coolant is prevented from being discharged.

  Since the gas vent 120a is provided on the rightmost side of the second radiator 82, the gas vent 120a is sufficiently separated from the cooling fan 86, and the gas vent 120a is directed obliquely upward to the right. That is, the bubbles 132 and the cooling liquid do not adhere to the cooling fan 86 provided on the inner side. In addition, it goes without saying that the bubbles 132 and the cooling liquid that have come out of the degassing portion 120 a do not adhere to the cooling fan 88 and the electric pump 90 that are farther than the cooling fan 86.

  Similarly, since the gas vent 120b is provided on the rightmost side of the thermostat 92, the gas vent 120b is sufficiently separated from the motor 90a of the electric pump 90, and the bubbles 132 emitted from the gas vent 120b adhere to the motor 90a. There is nothing.

  Basically, the electrical components in the fuel cell motorcycle 10 are designed to have sufficient water resistance. However, even when the water resistance is lowered due to an unexpected situation, the coolant adheres to the electrical components. It is possible to prevent deterioration of the function. In addition, since the electrical components and the like do not get wet, wiping work after degassing work is unnecessary.

  In addition, after injecting, replenishing, or exchanging the coolant, after degassing from the degassing portions 120a to 120d according to the above procedure, the electric pump 90 is driven for an extremely short time so that the temperature does not rise, and the inside of the cooling system 79 It is advisable to circulate the coolant and then perform the same degassing operation again. That is, while the second radiator 82, the thermostat 92, the ion exchanger 94, the lower part of the fuel cell 12, and the bubbles slightly remaining in the pipes other than these devices circulate in the cooling system 79, The air bubbles in the cooling system 79 can be removed more reliably and quickly by performing degassing again from the degassing portions 120a to 120d.

  Air bubbles staying in the first radiator 80 are discharged to a reservoir tank (not shown) by the action of the radiator cap 122 (see FIG. 3).

  Although the above-described degassing operation has been described as being performed with the fuel cell two-wheeled vehicle 10 tilted using the side stand 39, each degassing is performed even when the vehicle is parked while the vehicle body is kept upright by the center stand 41. Since the parts 120a to 120d are provided in the upper part of the second radiator 82, the thermostat 92, the ion exchanger 94, and the fuel cell 12, the degassing operation can be performed considerably efficiently.

  In the above description, the cooling system 79 has been described as being water-cooled, but may be other liquid-cooled such as oil-cooled.

  When the side stand 39 is provided on the right side (corresponding to the right-hand traffic country or the like), the gas venting portions 120a to 120d may be provided on the opposite side of the side stand 39, that is, on the left side. The gas vents 120a to 120d are not limited to the bolt type as shown in FIG. 7, but may be a plug type or a valve type, for example.

  2, 3, 5, and 6, the seat 22, the front cover 37, the handle 18, the headlight 36, the meter 38, and the like are omitted as appropriate in consideration of the visibility of the main part. .

  The fuel cell two-wheeled vehicle according to the present invention is not limited to the above-described embodiment, but can of course have various configurations without departing from the gist of the present invention.

It is a right side view of the fuel cell motorcycle according to the present embodiment. It is the perspective view which looked at the fuel cell two-wheeled vehicle which concerns on this Embodiment from the lower left back. It is a top view of the fuel cell two-wheeled vehicle which concerns on this Embodiment. It is a block diagram of the cooling system in a fuel cell motorcycle. It is a front view of the fuel cell two-wheeled vehicle of the state parked using the side stand. It is the perspective view which looked at the fuel cell and its vicinity part from diagonally right forward. It is an expansion exploded perspective view of a degassing part. It is an expansion perspective view which shows a mode that degassing is performed using a degassing part.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Fuel cell motorcycle 12 ... Fuel cell 24 ... Head pipe 26L, 26R ... Upper down frame 28L, 28R ... Lower down frame 36 ... Headlight 37 ... Front cover 38 ... Meter 39 ... Side stand 39a ... Shaft part 50 ... Fuel cylinder 79 ... Cooling system 80 ... First radiator 82 ... Second radiator 82a ... Pilot holes 84, 86, 88 ... Cooling fan 90 ... Electric pump 90a ... Motor 92 ... Thermostat 94 ... Ion exchangers 96a-96h ... Pipe line 98 ... Branch joint 120a ~ 120d ... Gas vent part 124 ... Boss 124a ... Female screw hole 126 ... Packing 128 ... Bolt 130 ... Tool 132 ... Foam

Claims (8)

A liquid-cooled cooling system (79) that travels with electric power obtained by supplying reaction gas and hydrogen gas to the fuel cell (12) and cools the fuel cell (12) , and a side stand that tilts the vehicle body and parks the vehicle (39) and a fuel cell motorcycle (10) comprising :
The radiator (82) constituting the cooling system (79) and the fuel cell (12) into which the cooling water of the cooling system (79) is fed are respectively vented portions (120a, 120a, have a 120d),
The radiator (82) and the degassing unit provided in the fuel cell (12) (120a, 120d) is characterized Rukoto provided directed outwardly on the opposite side to the side stand (39) Fuel cell motorcycle. The fuel cell motorcycle (10) according to claim 1,
The cooling system (79) has a thermostat (92) for switching the circulation path of the cooling water,
The thermostat (92) is provided with a gas vent (120b) for removing gas to the outside,
The thermostat the degassing unit provided in the (92) (120b), the fuel cell motorcycle according to claim Rukoto provided directed outwardly on the opposite side to the side stand (39). The fuel cell motorcycle (10) according to claim 1 or 2,
A cooling fan (86, 88) for ventilating air to the radiator (82);
The gas vent (120b) provided in the radiator (82) is disposed on the outer side in the vehicle width direction with respect to the cooling fans (86, 88) and is directed outward. Motorcycle. In the fuel cell motorcycle (10) according to any one of claims 1 to 3,
The cooling system (79) includes an ion exchanger (94) that removes ions in cooling water to prevent a ground fault of the fuel cell (12),
The ion exchanger (94) is provided with a gas vent (120c) for removing gas to the outside,
The fuel cell two-wheeled vehicle, wherein the degassing part (120c) provided in the ion exchanger (94) is provided on the opposite side to the side stand (39) and directed outward. In the fuel cell motorcycle (10) according to any one of claims 1 to 4 ,
The vent zone (120 a to 120 d), the fuel cell motorcycle, characterized in that the venting unit (120 a to 120 d) are provided on the upper portion of the apparatus provided. In the fuel cell motorcycle (10) according to any one of claims 1 to 5 ,
In a state where the vehicle is parked using the side stand (39) , the gas venting portions (120a to 120d) are provided at the highest position of the device in which the gas venting portions (120a to 120d) are provided. A fuel cell motorcycle. In the fuel cell motorcycle (10) according to any one of claims 1 to 6 ,
The vent zone (120 a to 120 d) of the previous SL vent zone (120 a to 120 d) are provided on the outermost devices are provided, and the fuel cell motorcycle, characterized in that is directed outward. In the fuel cell motorcycle (10) according to any one of claims 1 to 7 ,
The gas vent (120a to 120d) is capable of opening and closing with a minute and continuous opening degree.

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