Liquid Vapor Separator: Description and Operation

PURPOSE
Fuel vapor in the fuel tank is vented to the evaporative emissions canister through the evaporative emission valve and the fuel tank vent tube to prevent liquid fuel from passing to the evaporative emission tube shut off valve and the evaporative emissions canister.

OPERATION
A vapor space between the fuel level and the fuel tank upper surface is combined with an orifice and float shut-off valve in the evaporative emission valve to prevent liquid fuel from passing to the evaporative emission tube shut off valve and the evaporative emissions canister. The vapor space also allows for thermal expansion of the fuel.