Filling system for vehicular fluid container

1. A fitting for a filling opening of a fluid tank, comprising:

a tubular main body having a first end for connection with said tank and a second end to receive a spout, said main body equipped with a magnet substantially spanning the circumference of said main body to authorize a flow in said spout, and a tubular coupling section at said second end,

wherein said tubular coupling section is to detachably couple to a bottle having a fluid outlet and an air intake, wherein said fitting comprises a chamber between said second end and said magnet such that, when in use, an end of a first ventilation conduit is present in said chamber,

said first ventilation conduit in fluid communication with a volume of gas present at said first end, such that when in a coupled position with said bottle said air intake is located in said chamber and said fluid outlet flows out in the direction of said first end, and

a second ventilation conduit, wherein, when in use, an end of the second ventilation conduit is present in said tubular main body on a tank side of said magnet, said second ventilation conduit being in fluid communication with said volume of gas present at said first end,

wherein at least one of the first and second ventilation conduits passes on an outside of the tubular main body,

wherein the fitting comprises a funnel shaped section at said first end: wherein the other one of said first ventilation conduit and said second ventilation conduit ( 309 ) is formed by a central cavity of the tubular main body, said central cavity receiving a part of the bottle in the coupled position, wherein the central cavity is dimensioned with a radius that exceeds a radius of the received part of the bottle in an amount sufficient to provide fluid communication between the chamber and the tank side of the main body,

wherein said bottle is a screw-on bottle, and

wherein said tubular coupling section has a thread for detachably coupling to said bottle.

2. The fitting of claim 1 , further comprising a connecting flange near said second end, and said tubular coupling section protrudes beyond said flange.

3. The fitting of claim 1 , further comprising a constricted zone with a reduced inner diameter, substantially equal to a diameter of said spout and said outlet of said bottle.

4. A vehicular fluid tank, comprising the fitting according to claim 1 .

5. The fitting of claim 1 , wherein the second ventilation conduit passes on the outside of the tubular main body.

6. The fitting of claim 1 , wherein said at least one of the first and second ventilation conduits passes on an outside of the tubular main body is such that, when in use, said air intake receives air and/or vapor from said at least one conduit passing on the outside of the tubular main body.

7. A fitting for a filling opening of a fluid tank, comprising:

a tubular main body having a first end for connection with said tank and a second end to receive a spout, said main body equipped with a magnet substantially spanning the circumference of said main body to authorize a flow in said spout, and a tubular coupling section at said second end,

wherein said tubular coupling section is to detachably couple to a bottle having a fluid outlet and an air intake, wherein said bottle is a screw-on bottle, and wherein said tubular coupling section has a thread to detachably couple to said bottle, wherein the bottle is to be screwed in an inverted position onto a thread, and to be pressed down in order to switch a valve mounted on a protruding axis of the bottle into an open position to allow the fluid to flow out of the bottle into the tank, and to provide a corresponding flow of air and vapor from the tank to the bottle,

a first ventilation conduit in fluid communication with a volume of gas present at said first end, and

a second ventilation conduit,

wherein, when in use, an end of the second ventilation conduit is present in said tubular main body on a tank side of said magnet, said second ventilation conduit being in fluid communication with said volume of gas present at said first end, and

wherein at least one of the first and second ventilation conduits passes on an outside of the tubular main body such that, when in use, said air intake receives air and/or vapor from said at least one conduit passing on the outside of the tubular main body.

8. The fitting of claim 7 , further comprising a connecting flange near said second end, and said tubular coupling section protrudes beyond said flange.

9. The fitting of claim 7 , further comprising a constricted zone with a reduced inner diameter, substantially equal to a diameter of said spout and said outlet of said bottle.

10. A vehicular fluid tank, comprising the fitting according to claim 7 .

11. The fitting of claim 7 , wherein the second ventilation conduit passes on an outside of the tubular main body.

12. A fitting for the filling opening of a fluid tank, comprising:

a tubular main body having a first end to connect with said tank and a second end to receive a spout, said main body being equipped with a magnet substantially spanning the circumference of said main body to authorize a flow in said spout, and a tubular coupling section at said second end,

wherein said tubular coupling section is to detachably couple to a bottle having a fluid outlet and an air intake, wherein said fitting comprises a chamber between said second end and said magnet such that, when in use, an end of a first ventilation conduit is present in said chamber,

said first ventilation conduit in fluid communication with a volume of gas present at said first end, such that when in a coupled position with said bottle said air intake is located in said chamber and said fluid outlet flows out in the direction of said first end, and

a second ventilation conduit, wherein, when in use, an end of the second ventilation conduit is present in said tubular main body on a tank side of said magnet, said second ventilation conduit being in fluid communication with said volume of gas present at said first end,

wherein at least one of the first and second ventilation conduits passes on an outside of the tubular main body,

wherein the fitting further comprises a funnel shaped section at said first end, and

wherein said tubular main body ( 301 ) comprises a peripheral groove for holding said magnet and the other one of said first ventilation conduit and said second ventilation conduit extends substantially axially through said groove; wherein said bottle is a screw-on bottle; wherein said tubular coupling section) has a thread for detachably coupling to said bottle.

13. The fitting of claim 12 , wherein said one of said first ventilation conduit and said second ventilation conduit is embedded in an axial ridge intersecting said radial groove.

14. The fitting of claim 12 , wherein the magnet comprises an interrupted ring situated in said peripheral groove, and wherein an interruption is to flank said one of said first ventilation conduit and said second ventilation conduit.

15. The fitting of claim 14 , wherein said interrupted ring comprises a sector over which the interrupted ring is interrupted, said sector measuring between 20° and 40°.

16. The fitting of claim 12 , wherein at least one of the first and second ventilation conduits passes on an outside of the tubular main body such that, when in use, said air intake receives air and/or vapour from said at least one conduit passing on the outside of the tubular main body.

17. The fitting of claim 12 , wherein the second ventilation conduit passes on an outside of the tubular main body.

18. The fitting of claim 12 , further comprising a connecting flange near said second end, and said tubular coupling section protrudes beyond said flange.

19. The fitting of claim 12 , further comprising a constricted zone with a reduced inner diameter, substantially equal to a diameter of said spout and said outlet of said bottle.

20. A vehicular fluid tank, comprising the fitting according to claim 12 .