Fuel tank vapor relief valve and method of making same

Details Fuel tank vapor relief valve and method of making same Fuel tank vapor relief valve and method of making same

F - Mech Eng,Light,Heat,Weapons

16

K

F16K 17/19 (2006.01) B60K 15/035 (2006.01)

Patent

CA 2461594

A diaphragm operated pressure responsive valve has its inlet connected to a fuel tank vapor line and the valving chamber openly connected to the storage canister and to the engine air intake manifold vapor purge control valve. The diaphragm is operable to vary the spring bias on a valve member disposed in the chamber for biasing closed the vapor line from the tank in the event of high vacuum from the engine purge control valves. A bleed bypass permits continued bleed flow of vapor from the tank to the valving chamber.

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