CN202645793U

CN202645793U - Fuel plug valve

Info

Publication number: CN202645793U
Application number: CN201220199812XU
Authority: CN
Inventors: 水井宏
Original assignee: Mikuni Corp
Current assignee: Mikuni Corp
Priority date: 2012-02-21
Filing date: 2012-05-04
Publication date: 2013-01-02
Anticipated expiration: 2022-05-04
Also published as: JP5875889B2; JP2013170501A; CN103256155A

Abstract

The utility model relates to a fuel plug valve which has a simpler structure and is capable of reducing an area of a mounting hole of a connecting part of a fuel tank. In the fuel plug valve, a fuel respectively passes by a fuel channel (23) and a spare fuel channel (25); when the fuel stored in the fuel tank flows into a fuel injection device or a carburetor through the fuel channel (23), the fuel from the fuel injection device or the carburetor returns to the fuel tank through the spare fuel channel (25); and when the fuel stored in the fuel tank flows into the fuel injection device or the carburetor through the spare fuel channel (25), the fuel from the fuel injection device or the carburetor returns to the fuel tank through the fuel channel (23).

Description

The fuel stopcock

Technical field

The utility model relates to fuel stopcock (fuel cock).

Background technique

Fuel return line be connected on the fuel tank rather than the fuel stopcock on situation under during the dismounting fuel tank, not only will close the fuel stopcock of the supply passage that acts as a fuel but also need to close the pipeline that is connected on the fuel tank, thereby the disassembly of fuel tank is poor.Need in the pipeline on being connected to fuel tank shutoff valve and filter be set, thereby need in the small space between fuel injection system and fuel tank a plurality of devices be set.

Under the prior art, there is following such device (for example with reference to patent documentation 1), namely, constitute the fuel stopcock that can open or close simultaneously fuel outlet and fuel inlet fuel tank setting, and utilize the fuel supplying flexible pipe fuel outlet to be connected on the sucting of the petrolift that is arranged on the fuel tank outside, on the other hand, the return hose that returns from the residual fuel that is arranged on the fuel injection system in the motor is connected in the fuel inlet, in addition, two opening portions that make fuel outlet and fuel inlet are all at the inside opening of fuel filter, and make the height of the opening portion of fuel inlet be higher than the height of the opening portion of fuel outlet.

In addition, also there is following such device (for example with reference to patent documentation 2), namely, in the bottom of fuel tank the fuel stopcock is installed, below the fuel stopcock, dispose petrolift, between fuel stopcock and the petrolift by fuel is transported to the outlet hose (Outlet hose) the petrolift and residual fuel is connected from the return hose (Return hose) that petrolift is back to the fuel tank from the fuel stopcock, simultaneously, between fuel stopcock and petrolift, be formed with at the fuel stopcock and be in the circulation canal that outlet hose is communicated with return hose when being cut off state.That is, in the fuel supplying device that patent documentation 2 is put down in writing, fuel feed pipe road and fuel return line are concentrated in the fuel stopcock, thereby can open or close by an action that utilizes rotary valve.

Patent documentation 1: Japanese communique, JP 2000-110684 number

Patent documentation 2: Japanese communique, JP 2010-242694 number

The model utility content

But, the reflux line that is arranged in the fuel stopcock is the pipeline of fuel return special use, when making this fuel stopcock have standby functions, need to comprise three pipelines that amount to of common fuel feed pipe road and the service when for subsequent use and reflux line, thereby need to enlarge the area of the mounting hole of fuel tank joint.

Therefore, the purpose of this utility model is to solve above-mentioned problem, that is, provide a kind of structure simpler, and the fuel stopcock that can make the area of the mounting hole of fuel tank joint become less.

In order to solve above-mentioned problem, the one side of fuel stopcock of the present utility model is: be installed on the fuel tank of storage of fuels, and the fuel that is stored in the fuel tank is flowed in fuel injection system or the Carburetor, fuel from fuel injection system or Carburetor is back in the fuel tank, wherein, this fuel stopcock has the second fuel channel that the first fuel channel that fuel passes through and fuel pass through; And, this fuel stopcock constitutes: when the fuel in being stored in fuel tank flows in fuel injection system or the Carburetor by the first fuel channel, fuel from fuel injection system or Carburetor is back in the fuel tank by the second fuel channel, when the fuel in being stored in fuel tank flows in fuel injection system or the Carburetor by the second fuel channel, be back in the fuel tank by the first fuel channel from the fuel of fuel injection system or Carburetor.

In addition, the one side of fuel stopcock of the present utility model is on the basis of said structure, also have valve casing and valve, and constitute when valve is configured in the second place with respect to valve casing, the 3rd fuel channel is communicated with the first hole with the 4th hole, the 4th fuel channel is communicated with the second hole with the 3rd hole, wherein, above-mentioned valve casing is provided with: the first hole, and it communicates with the first fuel channel; The second hole, it communicates with the second fuel channel; The 3rd hole, it communicates the first joint of the first flexible pipe that the fuel that flows to fuel injection system or Carburetor passes through with being connected with; And the 4th hole, it communicates the second joint of the second flexible pipe that the fuel that returns from fuel injection system or Carburetor passes through with being connected with, and above-mentioned valve is provided with the 3rd fuel channel that when this valve is configured in primary importance with respect to valve casing the first hole is communicated with the 3rd hole and the 4th fuel channel that the second hole is communicated with the 4th hole.

And then the one side of fuel stopcock of the present utility model is on the basis of said structure, also has: the 5th fuel channel, and it is communicated with the second joint with the 4th hole; The 6th fuel channel, it is communicated with the 5th fuel channel with the first fuel channel or the second fuel channel; Safety check, it makes fuel flow into the first fuel channel or the second fuel channel from the 5th fuel channel, and stops fuel to flow into the 5th fuel channel from the first fuel channel or the second fuel channel.

(model utility effect)

According to one side of the present utility model, can provide a kind of structure simpler, and the fuel stopcock that can make the area of the mounting hole of fuel tank joint become less.

Description of drawings

Fig. 1 is the structural drawing of structure example of the fuel stopcock 11 of an expression mode of execution of the present utility model.

Fig. 2 (A) is the plan view of the structure of expression valve 30.

Fig. 2 (B) is the side view of the structure of expression valve 30.

Fig. 2 (C) is the rear view of the structure of expression valve 30.

Fig. 3 is the plan view of fuel stopcock 11.

Fig. 4 is the sectional drawing of fuel stopcock 11.

Fig. 5 (A) is the valve 30 that is shown in an open position of expression and the figure in 41～hole, hole 44.

Fig. 5 (B) is that expression is in the valve 30 of spare space and the figure in 41～hole, hole 44.

Fig. 5 (C) is that expression is in the valve 30 of closing (OFF) position and the figure in 41～hole, hole 44.

Fig. 6 is another routine sectional drawing of the structure of expression fuel stopcock 11.

Fig. 7 is other another routine sectional drawing of the structure of expression fuel stopcock 11.

(symbol description)

11 fuel stopcocks

21 valve bodies

22 flange plate

23 fuel channels

24 filters

25 spare fuel channels

26 filters

27 valve casings

28 sealing gaskets

29 O shapes circle

30 valves

31 wavy springs

32 valve gaps

33 filter box

34 outlet pipe connections

35 inlet connector tubes

41～44 holes

61 controlling rods

62 blocks

63 fuel channels

64 fuel channels

65 pressure release passages

81 fuel channels

82 filters

83 fuel channels

84 fuel channels

101 fuel channels

102 safety check

121 fuel channels

122 safety check

Embodiment

Below, with reference to Fig. 1～Fig. 7 the fuel stopcock (fuel cock) of the utility model one mode of execution is described.

Fig. 1 is the structural drawing of structure example of the fuel stopcock 11 of expression the utility model one mode of execution.Fuel stopcock 11 is installed on the fuel tank of storage of fuels, and makes the fuel flow that is stored in the fuel tank in fuel injection system, and the fuel from fuel injection system is back in the fuel tank.

Fuel stopcock 11 comprises valve body 21, flange plate 22, fuel channel 23, filter 24, spare fuel channel 25, filter 26, valve casing 27, sealing gasket 28, O shape circle 29, valve 30, wavy spring 31, valve gap 32, filter box 33, outlet pipe connection (outlet nipple) 34 and inlet connector tube (inlet nipple) 35 and consists of.

Valve body 21 is the main body of fuel stopcock 11, and it is formed by various metals or resin.On valve body 21, be and be provided with integratedly flange plate 22, fuel channel 23, spare fuel channel 25, valve casing 27, outlet pipe connection 34 and inlet connector tube 35.

Flange plate 22 is bolted on the mounting hole of joint of fuel tank.Thus fuel stopcock 11 is installed on the fuel tank.

When valve 30 is in the position of opening (ON) (details after narration), is stored in fuel in the fuel tank by fuel channel 23 and flows in the fuel injection system.When valve 30 is in the position of (reserve) for subsequent use (narration after the details), the fuel that is back to the fuel tank from fuel injection system passes through fuel channel 23.Filter 24 is made of wire netting or resin web, the solid matter that comprises in these filter 24 filtering fuels etc.Filter 24 be arranged in the end of fuel channel 23, fuel stopcock 11 is configured in when being installed in fuel tank on the end in the fuel tank.

When valve 30 is in position for subsequent use (details after narration), is stored in fuel in the fuel tank by spare fuel channel 25 and flows in the fuel injection system.When valve 30 is in the position of opening (narration after the details), be back to the fuel of fuel tank from fuel injection system by spare fuel channel 25.Filter 26 is made of wire netting or resin web, the solid matter that comprises in these filter 26 filtering fuels etc.Filter 26 be arranged in the end of spare fuel channel 25, fuel stopcock 11 is configured in when being installed in fuel tank on the end in the fuel tank.

The inside of valve casing 27 forms the cylindrical shape of one side rounded face opening.Sealing gasket 28 and O shape circle 29 embed the inside of valve casing 27.In addition, in the inside of the valve casing 27 that has embedded sealing gasket 28 and O shape circle 29, rotating to embed freely has valve 30.

Opposite side rounded face in valve casing 27 inside is provided with: hole 41, and it communicates with fuel channel 23; Hole 42, it communicates with outlet pipe connection 34 via filter box 33; Hole 43, it communicates with spare fuel channel 25; Hole 44, it communicates with inlet connector tube 35.On the opposite side rounded face of valve casing 27, hole 41, hole 42, hole 43 and hole 44 roughly equally spaced are configured towards counter clockwise direction along the circumference of specified diameter successively.

Sealing gasket 28 and O shape circle 29 are adjacent to internal surface and the valve 30 of valve casing 27, prevent thus sewing of fuel.Sealing gasket 28 is provided with four holes that are used for making the fuel by hole 41, hole 42, hole 43 and hole 44 to pass through.

Valve 30 is so-called rotary valve, the flow direction of the fuel when this valve 30 utilizes fuel stopcock 11 by switching with respect to the position of valve casing 27.That is, when being shown in an open position, valve 30 is communicated with hole 41 with hole 42, simultaneously hole 43 is communicated with hole 44.In addition, when being in the spare space, valve 30 is communicated with hole 41 with hole 44, simultaneously hole 42 is communicated with hole 43.

Fig. 2 is the figure of the structure of expression valve 30.Fig. 2 (A) is plan view, and Fig. 2 (B) is side view, and Fig. 2 (C) is rear view.

Valve 30 is provided with controlling rod 61, block 62, fuel channel 63, fuel channel 64, pressure release passage 65.Controlling rod 61 forms planar, thereby by turned this controlling rod 61 by the user valve 30 is shown in an open position or the spare space.Block 62 is formed in the circumference that is specified diameter in the 270 degree scopes, is the less circumference of diameter in 90 degree scopes, joins by this block 62 and the projection of valve gap 32, and valve 30 is parked on open position or the spare space.

Fuel channel 63 and fuel channel 64 are formed on respectively the back side of valve 30 with the form of following such groove,, be roughly fan-shaped and its section groove in the form of a substantially rectangular that is.Fuel channel 63 and fuel channel 64 sectional area separately form with the sectional area of fuel channel 23 and equate or the sectional area larger than the sectional area of fuel channel 23, are equivalent in the present embodiment Φ 4.4.Fuel channel 63 and fuel channel 64 dispose as axle is point symmetry shape ground take the center of rotation of valve 30.Fuel channel 63 is communicated with hole 41 when valve 30 is shown in an open position with hole 42, when valve 30 is in the spare space hole 41 is communicated with hole 44.Fuel channel 64 is communicated with hole 43 when valve 30 is shown in an open position with hole 44, when valve 30 is in the spare space hole 42 is communicated with hole 43.

Pressure release passage 65 is formed on the back side of valve 30 with the form of following such groove, that is, linearly and its section is the roughly groove of semicircle (rectangle).The sectional area of pressure release passage 65 is equivalent to Φ 1.6, but also can form the sectional area that equates with fuel channel 64.Pressure release passage 65 is configured on the straight line that intersects vertically with the straight line at the center of the center that is connected fuel channel 63 and fuel channel 64.Pressure release passage 65 does not link to each other with fuel channel 63 or fuel channel 64.

Return Fig. 1, wavy spring 31 is pressed to valve 30 on the sealing gasket 28, prevents thus sewing of fuel.Valve gap 32 is fixed by screws on the valve casing 27.

Fig. 3 is the plan view that sealing gasket 28, O shape circle 29, valve 30, wavy spring 31 and valve gap 32 are installed in the fuel stopcock 11 of the state on the valve body 21.Valve gap 32 is pressed to valve 30 on the valve casing 27, and valve 30 is limited with respect to the position of valve casing 27 so that in the scope of valve 30 till being in from open position to the spare space.

Contain the filter that filters for to the fuel that flows into fuel injection system in the filter box 33.Fig. 4 is the sectional drawing of fuel stopcock 11 of the AA ' section of Fig. 3.As shown in Figure 4, for example when valve 30 was shown in an open position, because fuel channel 63 is communicated with hole 41 with hole 42, therefore, the fuel that is stored in the fuel tank flowed in the hole 42 via fuel channel 63 and hole 41.Fuel channel 81 makes from the fuel of hole 42 inflows and flows in the filter 82 that is housed in the filter box 33.Filter 82 is filtering solid constituent or moisture, greasy filth etc. from fuel.Flow into outlet pipe connection 34 by the fuel behind the filter 82 via fuel channel 83.

Be connected with the flexible pipe that the fuel that flows to fuel injection system is passed through on the outlet pipe connection 34.Be connected with the flexible pipe that the fuel that returns from fuel injection system is passed through on the inlet connector tube 35.For example, when valve 30 is shown in an open position because fuel channel 64 is communicated with hole 44 with hole 43, therefore, from fuel injection system return and from the fuel of inlet connector tube 35 inflows via fuel channel 84 and hole 44 ostiums 43.Because hole 43 communicates with spare fuel channel 25, therefore, be back in the fuel tank via spare fuel channel 25 from the fuel of fuel injection system.

Then, with reference to Fig. 5 the details of the action of valve 30 is described.Fig. 5 (A) is the valve 30 that is shown in an open position of expression and the figure in 41～hole, hole 44.Fig. 5 (B) is in the valve 30 of spare space and the figure in 41～hole, hole 44 for expression.The valve 30 that Fig. 5 (C) closes (OFF) position for expression is in and the figure in 41～hole, hole 44.

On open position, controlling rod 61 and filter box 33 almost parallels.On the spare space, controlling rod 61 and filter box 33 approximate vertical.In addition, on closed position, controlling rod 61 roughly is 45 degree with respect to filter box 33.

Shown in Fig. 5 (A), when valve 30 was shown in an open position, fuel channel 63 was communicated with hole 41 with hole 42, and fuel channel 64 is communicated with hole 43 with hole 44.Therefore, when valve 30 was shown in an open position, the fuel that is stored in the fuel tank passed through in filter 24, fuel channel 23, hole 41, fuel channel 63, hole 42, fuel channel 81, filter 82, fuel channel 83 and the outlet pipe connection 34 rear inflow fuel injection systems successively.In addition, when valve 30 is shown in an open position, from the fuel of fuel injection system successively by being back in the fuel tank behind inlet connector tube 35, fuel channel 84, hole 44, fuel channel 64, hole 43, spare fuel channel 25 and the filter 26.

In addition, shown in Fig. 5 (B), when valve 30 was in the spare space, fuel channel 63 was communicated with hole 41 with hole 44, and fuel channel 64 is communicated with hole 43 with hole 42.Therefore, when valve 30 was in the spare space, the fuel that is stored in the fuel tank passed through in filter 26, spare fuel channel 25, hole 43, fuel channel 64, hole 42, fuel channel 81, filter 82, fuel channel 83 and the outlet pipe connection 34 rear inflow fuel injection systems successively.In addition, when valve 30 is in the spare space, from the fuel of fuel injection system successively by being back in the fuel tank behind inlet connector tube 35, fuel channel 84, hole 44, fuel channel 63, hole 41, fuel channel 23 and the filter 24.

And then shown in Fig. 5 (C), when valve 30 was in the closed position, fuel channel 63 only covered on the hole 41, and fuel channel 64 only covers on the hole 43.That is the hole 41 that, communicates with fuel channel 23 and the hole 43 that communicates with spare fuel channel 25 are closed respectively.Pressure release passage 65 is communicated with hole 42 with hole 44.When valve 30 is in the closed position, from the fuel of fuel injection system successively by being back in the fuel injection system behind inlet connector tube 35, fuel channel 84, hole 44, pressure release passage 65, hole 42, fuel channel 81, filter 82, fuel channel 83 and the outlet pipe connection 34.

In addition, also fuel channel 84 can be communicated with spare fuel channel 25 and discharge pressure from the fuel of fuel injection system.

Fig. 6 is another routine sectional drawing of the structure of expression fuel stopcock 11.Fuel channel 101 is communicated with fuel channel 84 with spare fuel channel 25.Safety check 102 is so-called duck beak type check valve, and it is arranged on fuel channel 101.When the fuel pressure of fuel channel 84 sides was higher than the fuel pressure of spare fuel channel 25 sides, safety check 102 made fuel flow to spare fuel channel 25 from fuel channel 84.On the other hand, when the fuel pressure of spare fuel channel 25 sides was higher than the fuel pressure of fuel channel 84 sides, safety check 102 stoped fuel to flow to fuel channel 84 from spare fuel channel 25.

Fig. 7 is other another routine sectional drawing of the structure of expression fuel stopcock 11.Fuel channel 121 is communicated with fuel channel 84 with spare fuel channel 25.It is thick and fuel channel 84 sides are thin that fuel channel 121 forms spare fuel channel 25 sides.Safety check 122 is so-called one-way valve, and it is arranged on fuel channel 121.Safety check 122 consists of by ball with to the spring of the ball application of force.The ball that utilizes spring will be encased in the thick path of spare fuel channel 25 sides is pressed to a thinner side of fuel channel 121, thereby safety check 122 cuts out.When the fuel pressure of fuel channel 84 sides is above than the high 50kPa of fuel pressure of spare fuel channel 25 sides, since ball with resist mutually from the active force of spring and separate from thinner fuel channel 121, thereby safety check 122 opens, thereby makes fuel flow to spare fuel channel 25 from fuel channel 84.On the other hand, even the fuel pressure of spare fuel channel 25 sides is higher than the fuel pressure of fuel channel 84 sides, safety check 122 also can stop fuel to flow to fuel channel 84 from spare fuel channel 25.

Like this, suppose because certain former thereby spare fuel channel 25 is closed, when the fuel pressure of fuel channel 84 sides is higher than the fuel pressure of spare fuel channel 25 sides, fuel is flowed to the spare fuel channel 25 from fuel channel 84, thereby can discharge the fuel pressure of fuel channel 84 sides.Therefore, can prevent that the flexible pipe that is connected on the inlet connector tube 35 from coming off, perhaps, can prevent that the pump of fuel injection system from damaging.

In addition, also can form fuel channel 101 or fuel channel 121 is communicated with fuel channel 84 with fuel channel 23.

Like this, fuel channel 84 further is set, the words of fuel channel 101 or fuel channel 121 and safety check 102 or safety check 122, can prevent that then the flexible pipe that is connected on the inlet connector tube 35 from coming off, perhaps, the pump that can prevent fuel injection system damages, wherein, above-mentioned fuel channel 84 is communicated with inlet connector tube 35 with hole 44, above-mentioned fuel channel 101 or fuel channel 121 are communicated with fuel channel 84 with spare fuel channel 25 or fuel channel 23, above-mentioned safety check 102 or safety check 122 make fuel flow to spare fuel channel 25 or fuel channel 23 from fuel channel 84, and stop fuel to flow to fuel channel 84 from spare fuel channel 25 or fuel channel 23.

By the fuel stopcock, under the cut state in return flow line during at fuel injection system side drive petrolift, fuel is back in the fuel tank when authorized pressure is above, and therefore, it is excessive that fuel pressure can not become, thereby can avoid flexible pipe to come off or pump damages.Because fuel can't be back in the fuel tank when authorized pressure is following, therefore, fuel pressure can excessively not reduce, thereby can return to more than the authorized pressure in short driving time.

In addition, for fuel stopcock 11, flow in the fuel injection system and fuel from fuel injection system is back in the fuel tank and be illustrated for example so that be stored in fuel in the fuel tank, but be not limited to this, fuel stopcock 11 also can make the fuel that is stored in the fuel tank flow in the Carburetor and the fuel from Carburetor is back in the fuel tank, perhaps, also can make fuel flow enter petrolift and the fuel from petrolift is back in the fuel tank.

As mentioned above, owing in fuel stopcock 11, be provided with the spare fuel channel 25 that fuel channel 23 that fuel passes through and fuel pass through, when the fuel in being stored in fuel tank flows in fuel injection system or the Carburetor by fuel channel 23, fuel from fuel injection system or Carburetor is back in the fuel tank by spare fuel channel 25, when the fuel in being stored in fuel tank flows in fuel injection system or the Carburetor by spare fuel channel 25, fuel from fuel injection system or Carburetor is back in the fuel tank by fuel channel 23, therefore, do not need to arrange in addition reflux line, it is simpler that thereby structure becomes, and the area that can make the mounting hole of fuel tank joint becomes less, wherein, above-mentioned fuel stopcock 11 is installed on the fuel tank of storage of fuels, and the fuel that is stored in the fuel tank is flowed in fuel injection system or the Carburetor, the fuel from fuel injection system or Carburetor is back in the fuel tank.

Therefore, the disassembly of fuel tank is improved.In addition, avoided structure complicated, thereby the degrees of freedom of the layout design between fuel injection system and the fuel tank is improved.Do not need to change the shape of fuel tank, fuel channel and filter, thus the structure in the time of can directly using Carburetor.Rotary valve parts, filter can use and the Carburetor identical parts of stopcock, and can use cheap existing flow component.

And then be provided with valve casing 27 and valve 30, when valve 30 was configured in the spare space with respect to valve casing 27, fuel channel 63 was communicated with hole 41 with hole 44, fuel channel 64 is communicated with hole 43 with hole 42, wherein, above-mentioned valve casing 27 is provided with: hole 41, and it communicates with fuel channel 23; Hole 43, it communicates with spare fuel channel 25; Hole 42, it communicates with the outlet pipe connection 34 that is connected with the flexible pipe that the fuel that flows to fuel injection system or Carburetor passes through; Hole 44, it communicates with the inlet connector tube 34 that is connected with the flexible pipe that the fuel that returns from fuel injection system or Carburetor passes through, and above-mentioned valve 30 is provided with the fuel channel 63 that when this valve 30 is configured in open position with respect to valve casing 27 hole 41 is communicated with hole 42 and the fuel channel 64 that hole 43 is communicated with hole 44.

Mode of execution of the present utility model is not limited to above-mentioned mode of execution, can carry out various changes in the scope that does not break away from the utility model main idea.

Claims

1. A fuel cock valve which is mounted on a fuel tank storing fuel, and causes the fuel stored in the fuel tank to flow into a fuel injection device or a carburetor, and allows fuel from the fuel injection device or the the fuel from the carburetor is returned to the fuel tank,

The fuel cock valve is characterized in that,

having a first fuel passage through which fuel passes and a second fuel passage through which fuel passes;

And, the fuel cock valve is constituted as:

When the fuel stored in the fuel tank flows into the fuel injection device or the carburetor through the first fuel passage, the fuel from the fuel injection device or the carburetor passes through the the second fuel passage returns to the fuel tank;

When the fuel stored in the fuel tank flows into the fuel injection device or the carburetor through the second fuel passage, the fuel from the fuel injection device or the carburetor passes through the The first fuel passage returns to the fuel tank.

2. The fuel cock according to claim 1, wherein:

Also having a valve housing and a valve;

The valve housing is provided with:

a first hole communicating with the first fuel passage;

a second hole communicating with the second fuel passage;

a third hole communicating with a first connecting portion to which a first hose for passing the fuel flowing to the fuel injection device or the carburetor is connected; and

a fourth hole communicating with a second connecting portion to which a second hose for passing the fuel returned from the fuel injection device or the carburetor is connected;

The valve is provided with a third fuel passage connecting the first hole with the third hole and connecting the second hole with the fourth hole when the valve is disposed in a first position relative to the valve housing. A fourth fuel channel connected by holes;

And, the fuel cock valve is constituted as:

When the valve is disposed in the second position relative to the valve housing, the third fuel passage communicates the first hole with the fourth hole, and the fourth fuel passage connects the second hole with the fourth hole. The third hole communicates.

3. The fuel cock valve according to claim 2, further comprising:

a fifth fuel passage communicating the second connecting portion with the fourth hole;

a sixth fuel passage communicating the fifth fuel passage with the first fuel passage or the second fuel passage; and

a check valve that allows the fuel to flow from the fifth fuel passage into the first fuel passage or the second fuel passage and prevents the fuel from flowing from the first fuel passage or the second fuel passage channel flows into the fifth fuel channel.