Fuel tank vapor control apparatus

Details Fuel tank vapor control apparatus Fuel tank vapor control apparatus

1995-10-24

1996-12-03

Michalsky, Gerald A.

Fluid handling

Diverse fluid containing pressure systems

Fluid separating traps or vents

137 43, F16K 2404, F16K 3118

Patent

active

055798020

ABSTRACT:
An apparatus to control the flow of hydrocarbon fuel vapor from a vehicle fuel tank. The apparatus is mounted adjacent the top of the fuel tank and contains a valve system which controls fuel vapor flow from the tank to a receiving canister and prevents the vapor from escaping to the atmosphere. The valve system utilizes a diaphragm, operably connected to a main valve, to prevent the vapor pressure in the fuel tank from closing the valve. The main valve is actuated by a float responsive to the level of fuel in the tank and remains open when the fuel level is below a designated level and closes due to a sufficiently high fuel level or in a vehicle roll-over condition to prevent liquid fuel from escaping from the fuel tank through the apparatus.

REFERENCES:
patent: 2554158 (1951-05-01), Spence
patent: 4011884 (1977-03-01), Drori
patent: 4753262 (1988-06-01), Bergsma
patent: 5065782 (1991-11-01), Szlaga
patent: 5234013 (1993-08-01), Roetker et al.

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