Fuel tank cap for a fuel tank
View Patent ↗A fuel tank cap for a fuel tank of an engine. The fuel tank cap includes a fuel cap cover, a housing having a side wall, a bottom wall, and a receptacle, a fuel vapor adsorption material positioned within the receptacle, an inlet disposed near the bottom wall and configured to provide fluid communication with a fuel tank vapor space, an outlet disposed near the bottom wall and configured to provide fluid communication with the atmosphere, an internal wall adjacent the bottom wall and disposed between the inlet and the outlet, and at least one aperture configured to permit fuel vapor to flow in a vapor flow path from one side of the internal wall to the other side of the internal wall.
1. A fuel tank cap that is removably coupled to a fuel tank of an engine, the fuel tank cap comprising:
a fuel cap cover;
a housing having a side wall, a bottom wall, and a receptacle;
a fuel vapor adsorption material positioned within the receptacle;
an inlet disposed near the bottom wall and configured to provide fluid communication with a fuel tank vapor space;
an outlet disposed near the bottom wall and configured to provide fluid communication with the atmosphere;
a radially extending internal wall adjacent the bottom wall, the inlet and the outlet being disposed on opposite sides of the internal wall; and
at least one aperture configured to permit fuel vapor to flow in a vapor flow path from one side of the internal wall to the other side of the internal wall.
2. The fuel tank cap of claim 1 , wherein the fuel vapor adsorption material includes activated carbon.
3. The fuel tank cap of claim 1 , wherein the vapor flow path is substantially circular.
4. The fuel tank cap of claim 1 , wherein the internal wall is a first internal wall, and wherein the fuel tank cap further includes at least two additional radially extending internal walls adjacent the bottom wall and contiguous with the first internal wall.
5. The fuel tank cap of claim 4 , wherein each of at least two additional radially extending internal walls has an aperture configured to permit passage of fuel vapor through the respective internal wall.
6. The fuel tank cap of claim 5 , wherein the at least two additional radially extending internal walls includes at least three radially extending internal walls, and wherein a combination of the first internal wall and the at least three additional radially extending internal walls has a substantially X-shaped configuration.
7. The fuel tank cap of claim 5 , wherein a combination of the first internal wall and the at least two additional radially extending internal walls has a substantially Y-shaped configuration.
8. The fuel tank cap of claim 1 , wherein the internal wall extends from the bottom wall.
9. The fuel tank cap of claim 1 , wherein the inlet is disposed in the bottom wall, and wherein the outlet is disposed in one of the bottom wall and the side wall.
10. The fuel tank cap of claim 1 , wherein the fuel tank cap includes a mounting apparatus configured to receive a fuel additive capsule.
11. The fuel tank cap of claim 10 , wherein the mounting apparatus is positioned on an opposite side of the bottom wall from the internal wall.
12. The fuel tank cap of claim 5 , wherein the apertures are non-adjacent to the side wall.
13. A fuel tank cap that is removably coupled to a fuel tank of an engine, the fuel tank cap comprising:
a fuel cap cover;
a housing having a side wall, a bottom wall, and a receptacle;
a fuel vapor adsorption material positioned within the receptacle;
a fuel vapor inlet disposed near the bottom wall and configured to provide fluid communication with a fuel tank vapor space;
an outlet disposed near the bottom wall and configured to provide fluid communication with the atmosphere;
a radially extending internal wall adjacent the bottom wall, the inlet and the outlet being disposed on opposite sides of the internal wall, the internal wall creating a first region on one side of the internal wall and a second region on the other side of the internal wall; and
at least one aperture configured to permit fuel vapor to flow in a fuel vapor flow path from the first region to the second region.
14. The fuel tank cap of claim 13 , wherein the fuel vapor adsorption material includes activated carbon.
15. The fuel tank cap of claim 13 , wherein the fuel vapor flow path is substantially circular.
16. The fuel tank cap of claim 13 , wherein the internal wall is a first internal wall, and wherein the fuel tank cap further includes at least two additional radially extending internal walls adjacent the bottom wall and contiguous with the first internal wall.
17. The fuel tank cap of claim 16 , wherein each of at least two additional radially extending internal walls has an aperture configured to permit passage of fuel vapor through the respective internal wall.
18. The fuel tank cap of claim 17 , wherein the at least two additional radially extending internal walls includes at least three radially extending internal walls, and wherein a combination of the first internal wall and the at least three additional radially extending internal walls has a substantially X-shaped configuration.
19. The fuel tank cap of claim 17 , wherein a combination of the first internal wall and the at least two additional radially extending internal walls has a substantially Y-shaped configuration.
20. The fuel tank cap of claim 13 , wherein the internal wall extends from the bottom wall.
21. The fuel tank cap of claim 13 , wherein the inlet is disposed in the bottom wall, and wherein the outlet is disposed in one of the bottom wall and the side wall.
22. The fuel tank cap of claim 13 , wherein the fuel tank cap includes a mounting apparatus configured to receive a fuel additive capsule.
23. The fuel tank cap of claim 22 , wherein the mounting apparatus is positioned on an opposite side of the bottom wall from the internal wall.
24. The fuel tank cap of claim 17 , wherein the apertures are non-adjacent to the side wall.
25. A fuel tank cap that is removably coupled to a fuel tank of an engine, the fuel tank cap comprising:
a housing having a bottom wall;
a receptacle formed in the housing;
an inlet disposed near the bottom wall and configured to provide fluid communication with a fuel tank vapor space;
an outlet disposed near the bottom wall and configured to provide fluid communication with the atmosphere;
a fuel vapor adsorption material positioned within the receptacle;
a radially extending internal wall extending into the receptacle, the inlet and the outlet being disposed on opposite sides of the internal wall; and
at least one aperture configured to permit fuel vapor to flow from one side of the internal wall to the other side of the internal wall;
wherein the internal wall is configured to direct fuel vapor through the fuel vapor adsorption material in a substantially circular fuel vapor flow path.
26. The fuel tank cap of claim 25 , wherein the fuel vapor adsorption material includes activated carbon.
27. The fuel tank cap of claim 25 , wherein the internal wall is a first internal wall, and wherein the fuel tank cap further includes at least two additional radially extending internal walls extending into the receptacle and contiguous with the first internal wall.
28. The fuel tank cap of claim 27 , wherein each of at least two additional radially extending internal walls has an aperture configured to permit passage of fuel vapor through the respective internal wall.
29. The fuel tank cap of claim 28 , wherein at least two additional radially extending internal walls includes at least three radially extending internal walls, and wherein a combination of the first internal wall and the at least three additional radially extending internal walls has a substantially X-shaped configuration.
30. The fuel tank cap of claim 28 , wherein a combination of the first internal wall and the at least two additional radially extending internal walls has a substantially Y-shaped configuration.
31. The fuel tank cap of claim 25 , wherein the fuel tank cap includes a mounting apparatus configured to receive a fuel additive capsule.
32. The fuel tank cap of claim 31 , wherein the mounting apparatus is positioned on an opposite side of the bottom wall from the internal wall.
33. The fuel tank cap of claim 28 , wherein the housing includes a side wall adjacent the bottom wall, and wherein the apertures are non-adjacent to the side wall.