Carbon canister with direct connect fuel tank isolation valve

A fuel tank venting system comprising

• a canister housing including a media storage body formed to define a storage cavity containing a carbon bed configured to absorb hydrocarbons in fuel vapor from a fuel tank that flows into and out of the storage cavity of the media storage body and a storage body closure selectively coupled to the media storage body to close a top opening to the storage cavity,
• a fuel tank isolation valve assembly including a valve housing formed to define a fuel-tank vapor port adapted to be coupled in fluid communication with the fuel tank and a vapor-transfer passageway in fluid communication with the fuel-tank vapor port and a fuel tank isolation valve located in the vapor-transfer passageway and configured to regulate the flow of fuel vapor between the fuel tank and the storage cavity, and
• valve assembly coupling means for coupling the fuel tank isolation valve assembly directly to the storage body closure of the canister housing to cause the vapor-transfer passageway of the valve housing to be in fluid communication with the storage cavity of the canister housing when an inner end of the fuel tank isolation valve assembly is inserted into a mount hole formed in the canister housing and the fuel tank isolation valve assembly is rotated about a central vertical axis of the fuel tank isolation valve assembly so that fuel vapor flows directly between the fuel tank and the storage cavity of the media storage body,
• wherein valve housing includes an valve housing body and a bottom mount member coupled to the annular valve housing body in a bottom opening of the valve housing body, wherein the valve housing body is shaped to define a first section of the vapor-transfer passageway and the bottom mount member is shaped to define a second section of the vapor-transfer passageway and a shoulder surface engaged by part of the fuel tank isolation valve to retain the fuel tank isolation valve in the first section of the vapor-transfer passageway.

A fuel tank venting system comprising

• a canister housing including a media storage body formed to define a storage cavity and a storage body closure selectively coupled to the media storage body to close a top opening to the storage cavity,
• a fuel tank isolation valve assembly including a valve housing formed to define a fuel-tank vapor port adapted to be coupled in fluid communication with the fuel tank and a vapor-transfer passageway in fluid communication with the fuel-tank vapor port and a fuel tank isolation valve located in the vapor-transfer passageway and configured to regulate the flow of fuel vapor between the fuel tank and the storage cavity, and
• a mount assembly configured to couple the fuel tank isolation valve assembly directly to the storage body closure of the canister housing to cause the vapor-transfer passageway of the valve housing to be in fluid communication with the storage cavity of the canister housing when an inner end of the fuel tank isolation valve assembly is inserted into a mount hole formed in the canister housing and the fuel tank isolation valve assembly is rotated about a central vertical axis of the fuel tank isolation valve assembly so that fuel vapor flows directly between the fuel tank and the storage cavity of the media storage body,
• wherein the valve housing includes a valve housing body and a bottom mount member coupled to the valve housing body in a bottom opening of the valve housing body to provide a shoulder surface engaged by part of the fuel tank isolation valve to retain the fuel tank isolation valve in the vapor-transfer passageway of the valve housing.