Tank assembly and components

Abstract

A tank assembly and fuel system for an engine having an engine intake. The fuel system may comprise a tank housing defining an interior and an exterior and an opening between the interior and the exterior, a liquid being containable in the interior, vapor being produceable from the liquid, a closure housing connectable to the tank housing to selectively close the opening, a vapor path from the tank interior to the engine intake, and adsorption media for trapping harmful components in the vapor, the adsorption media being supported in the vapor path and being positioned in the vapor path between the tank interior and the engine intake.

1 . A fuel system for an engine, the fuel system comprising:
 a tank housing defining an interior and an exterior and an opening between the interior and the exterior, a liquid being containable in the interior, vapor being produceable from the liquid, a vapor path being defined from the tank interior;   a closure housing connectable to the tank housing to selectively close the opening; and   adsorption media for trapping harmful components in the vapor, the adsorption media being supported in the vapor path.   
   
   
       2 . The fuel system of  claim 1 , further comprising a media housing supporting the adsorption media. 
   
   
       3 . The fuel system of  claim 2 , wherein the media housing defines a portion of the vapor path. 
   
   
       4 . The fuel system of  claim 2 , wherein the engine includes an engine intake, wherein the vapor path is defined from the interior and to the engine intake, and wherein the media housing is positioned outside of the tank housing. 
   
   
       5 . The fuel system of  claim 1 , further comprising a vapor/liquid separator positioned in the vapor path, the separator being operable to prevent liquid contained in the tank housing from entering the media housing and to selectively allow vapor to enter the media housing. 
   
   
       6 . The fuel system of  claim 5 , further comprising a rollover valve fluidly connected between the separator and the media housing. 
   
   
       7 . The fuel system of  claim 6 , wherein the separator includes a valve operable between a closed position, in which liquid and vapor are not allowed to pass from the interior of the tank assembly into the receptacle interior, and an open position, in which air from the exterior of the tank assembly is allowed to pass into the interior of the tank assembly. 
   
   
       8 . The fuel system of  claim 1 , further comprising a flow path from outside the fuel system and through the adsorption media such that a portion of harmful components in the adsorption media are desorbed from the adsorption media by clean air. 
   
   
       9 . A tank assembly comprising:
 a tank housing defining an interior and an exterior, a liquid being containable in the interior, vapor being produceable from the liquid, a flow path being defined between the interior and the exterior; and   adsorption media supported by the tank housing, vapor being routed along the flow path from the interior of the tank assembly, through the adsorption media and to the exterior of the tank assembly.   
   
   
       10 . The assembly of  claim 9 , and further comprising a media housing connectable to the tank housing and supporting the adsorption media. 
   
   
       11 . The assembly of  claim 10 , wherein the media housing is removably connectable to the tank housing. 
   
   
       12 . The assembly of  claim 11 , wherein the tank housing includes a receptacle portion having a receptacle interior, the receptacle portion defining the flow path, the media housing being supportable in the receptacle interior. 
   
   
       13 . The assembly of  claim 12 , wherein the receptacle portion defines a passage between the interior of the tank housing and the receptacle interior, and wherein the tank assembly further comprises a vapor/liquid separator supported proximate the passage, the separator being operable to prevent liquid contained in the tank assembly from entering the receptacle interior and to selectively allow vapor to enter the media housing. 
   
   
       14 . The assembly of  claim 13 , wherein the separator includes a valve operable between a closed position, in which liquid and vapor are not allowed to pass from the interior of the tank assembly into the receptacle interior, and an open position, in which air from the exterior of the tank assembly is allowed to pass into the interior of the tank assembly. 
   
   
       15 . The assembly of  claim 12 , wherein the tank housing includes a door selectively closing the receptacle portion from the exterior of the tank assembly. 
   
   
       16 . The assembly of  claim 15 , wherein the media housing is removable from the receptacle portion through the door. 
   
   
       17 . A tank assembly comprising:
 a tank housing defining an interior and an exterior and an opening between the interior and the exterior, a liquid being containable in the interior, vapor being produceable from the liquid, a flow path being defined between the interior and the exterior;   a closure housing connectable to the tank housing to selectively close the opening; and   adsorption media supported by at least one of the tank housing and the closure housing, vapor being routed along the flow path from the interior of the tank assembly, through the adsorption media and to the exterior of the tank assembly.   
   
   
       18 . The assembly of  claim 17 , wherein the tank housing defines tank threads proximate to the opening, wherein the closure housing defines cap threads complementary to and engageable with the tank threads to connect the closure housing to the tank wall, the closure housing providing the flow path, and wherein the adsorption media is supported by the closure housing. 
   
   
       19 . The assembly of  claim 17 , and further comprising a media housing connectable to the at least one of the tank housing and the closure housing and supporting the adsorption media. 
   
   
       20 . The assembly of  claim 17 , wherein the tank housing includes a receptacle portion having a receptacle interior, the receptacle portion defining the flow path, the adsorption media being supportable in the receptacle interior.