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U.S. Department of Energy
Office of Scientific and Technical Information

Vapor recovery system

Patent ·
OSTI ID:5850210
This patent describes a system for recovering fuel vapors discharged from a vehicle fuel system during refueling. The vehicle fuel system includes a fuel tank having a vent tube and a separate filler neck. The system comprises: partition means for dividing the filler neck into an outer chamber communicable with the atmosphere and an inner chamber in fluid communication with the fuel tank, the partition means including aperture means for sealingly admitting a fuel dispensing nozzle into the inner chamber without coupling the inner and outer chambers in fluid communication during refueling, separator means for separating liquid fuel entrained in the fuel vapor from fuel vapor discharged from the fuel tank via at least one of the vent tube and filler neck, and vapor recovery means for selectively processing vapor discharged from the separator means at a fuel vapor treatment site without discharging vapor through the outer chamber of the filler neck to the atmosphere during refueling.
Assignee:
Stant Inc., Connersville, IN
Patent Number(s):
US 4707164
OSTI ID:
5850210
Country of Publication:
United States
Language:
English