초록 ▼

A gasoline vapor recovery system wherein, during winter conditions, the volume of air/fuel vapor delivered to the storage tank is less than the volume of liquid gasoline removed from the tank but expands upon saturation within the storage tank to be approximately the same volume as the liquid gasoli

A gasoline vapor recovery system wherein, during winter conditions, the volume of air/fuel vapor delivered to the storage tank is less than the volume of liquid gasoline removed from the tank but expands upon saturation within the storage tank to be approximately the same volume as the liquid gasoline removed. The volume of vapor to be delivered to the storage tank is based on pressure differential between the fuel vapor saturation pressure at a measured temperature at the storage tank and on the fuel vapor pressure of the air/fuel fluid delivered to the storage tank. During summer conditions, the volume of the air/fuel vapor delivered to the storage tank is controlled to be equal to the volume of liquid gasoline removed from the storage tank by drawing excess air into the nozzle.

대표청구항 ▼

[ What is claimed is:] [1.]1. A controller for a fuel vapor recovery system, the controller comprising:an input reflecting a volume of liquid fuel transported from a storage tank to a nozzle for dispensing into a fuel tank of a car; andan output controlling a vapor recovery device that transports ai

[ What is claimed is:] [1.]1. A controller for a fuel vapor recovery system, the controller comprising:an input reflecting a volume of liquid fuel transported from a storage tank to a nozzle for dispensing into a fuel tank of a car; andan output controlling a vapor recovery device that transports air/fuel vapor through the fuel line from the nozzle to the storage tank and that delivers a volume of the air/fuel vapor (V.sub.delivered) to the storage tank; this output being set so that when the temperature of the storage tank is greater than the temperature of the car's fuel tank, the volume of air/fuel vapor delivered to the storage tank (V.sub.delivered) is less than the volume of liquid gasoline (V.sub.liquid) but expands upon saturation within the storage tank to be approximately equal to the volume of liquid gasoline (V.sub.liquid);wherein the controller determines the volume of vapor to be delivered to the storage tank (V.sub.delivered) based on the fuel vapor saturation pressure at the temperature of the storage tank (p.sub.sat (T.sub.storage)).