Internal-combustion engines – Intake manifold – Manifold tuning – balancing or pressure regulating means
Patent
1973-08-13
1976-08-31
Burns, Wendell E.
Internal-combustion engines
Intake manifold
Manifold tuning, balancing or pressure regulating means
F92M 1734, B65J 300
Patent
active
039773795
ABSTRACT:
A combustion engine system has a tank for volatile fuel with a flexible bag inside equipped with its own breather valve separate from the fill pipe for the tank. When the tank is filled, a muff around the full pipe seals the tank against exhaust of volatile vapors, and air from the bag is forced out the breather valve as it is displaced by the liquid fuel until a valve element on the bag shuts off the breather valve, whereby only pure air is vented to the atmosphere. As the tank empties during use, air returns through the breather valve to fill the bag and replace the space in the tank previously occupied by the liquid fuel. A separate valve controlled relief line communicates between the chamber in the tank and a solenoid controlled throttle valve passage so that when the passage is closed by the throttle valve hot soak vapors from the combustion engine are returned to the fuel tank.
REFERENCES:
patent: 3617034 (1971-11-01), Skinner
patent: 3678912 (1972-07-01), Hensler
patent: 3752355 (1973-08-01), Weissenbach
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