Vapor recovery systems

Fluent material handling – with receiver or receiver coacting mea – Diverse fluid containing pressure filling systems involving... – Filling with exhausting the receiver

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Details

141302, 220 85OVS, 220 85OVR, 220DIG33, 137587, 55168, B01D 5304

Patent

active

050278681

ABSTRACT:
A fill tube (12) leading into a fuel tank (10) is provided with a normally closed closure door (20) and a fill nozzle seal (24, 26, 30) spaced outwardly of the closure door (20). When liquid fuel is to be added to the fuel tank (10) a fill nozzle (32) is inserted through the fill nozzle seal (24, 26, 30). A seal element (30) engages the outside diameter of the fill nozzle (32) and seals against vapor leakage between the seal element (30) and the fill nozzle (32). Further insertion of the fill nozzle (32) into the fill tube (12) moves the end of the fill nozzle (32) against the closure door (20) opening the closure door (20). When this happens, fuel vapor within the fuel tank (10) flows through an opening (18) that is normally closed by the closure door (20), to and through an outlet (36) leading from a chamber (34) that is between the fill nozzle seal (24, 26, 30) and the closure door (20). The vapor flows from the chamber (34) into and through a vapor recovery passageway which leads to a vapor storage device (38). Liquid fuel being introduced into the fuel tank (10) displaces vapor from the fuel tank (10) through the vapor recovery passageway to the vapor storage device (38).

REFERENCES:
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patent: 4630749 (1986-12-01), Armstrong et al.
patent: 4651889 (1987-03-01), Uranishi et al.
patent: 4706708 (1987-11-01), Fornoto et al.
patent: 4714172 (1987-12-01), Morris
patent: 4715509 (1987-12-01), Ito et al.
patent: 4770677 (1988-09-01), Harris
patent: 4809863 (1989-03-01), Woodcock
"Onboard Control of Refueling Emissions", SAE Technical Paper Series, by George S. Musser and Hugh F. Shannon, Oct. 6-9, 1986, No. 861560.
"Vehicle Onboard Control of Refueling Emissions-System Demonstration on a 1985 Vehicle", SAE Technical Paper Series, by W. J. Koehl, D. W. Lloyd, and L. J. McCabe, Oct. 6-9, 1986, No. 861551.

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