High frequency pulsed fuel injector
AssigneeThe United States of America as represented by the Secretary of the Air Force
InventorMichael J. Stanek
Life of this patent
Estimating the term…
Abstract
A high frequency pulsed fuel injector is disclosed. The fuel injector incorporates a resonance tube in outlet fluid communication with a fuel nozzle. During operation the resonance tube provides a pulsating output which is directed into the fuel nozzle. The pulsating output of the resonance tube perturbs the flow of fuel in the fuel nozzle, effectively breaking it up into discrete slugs or chunks for subsequent combustion in a combustion chamber. The combustion process is greatly enhanced by this breakup of the fuel jet, improving combustion efficiency as well as reducing undesirable emissions.
Claims17
A fuel injector, comprising:
- a fuel nozzle having a fuel inlet and an outlet;
- a resonance tube having an outlet in fluid communication with said fuel nozzle upstream of the nozzle outlet;
- and,
- a source of pressurized gas in inlet fluid communication with said resonance tube.
A fuel injector, comprising:
- a fuel nozzle having a fuel inlet and an outlet;
- a resonance tube having an outlet in fluid communication with said fuel nozzle upstream of the nozzle outlet;
- a source of pressurized gas in inlet fluid communication with said resonance tube;
- and,
- a fuel spray head in fluid communication with said outlet of said fuel nozzle.
A fuel injector comprising:
- a fuel nozzle having a fuel inlet and an outlet;
- said fuel nozzle including an internal bore with an internal converging/diverging portion;
- a resonance tube having an outlet in fluid communication with said fuel nozzle upstream of the nozzle outlet;
- and,
- a source of pressurized gas in inlet fluid communication with said resonance tube.
Dependencies are inferred from the claim text.