Ducted fuel injection
| DWPI Title: Fuel injection system for mixing fuel and charge-gas in a combustion chamber, includes a fuel injector having a first opening, and a jet of fuel is injected through first opening into combustion chamber, and duct has a tubular configuration |
| Abstract: Various technologies presented herein relate to heating a fuel and enhancing fuel and charge-gas mixing inside a combustion chamber to enable minimal, or no, generation of soot and/or other undesired emissions during ignition and subsequent combustion of the locally premixed mixtures. To enable sufficient mixing of the fuel and charge-gas, a jet of fuel can be directed to pass through a bore of a duct causing charge-gas to be drawn into the bore creating turbulence to mix the fuel and the drawn charge-gas. The duct can be heated to provision heating of the fuel and charge-gas mixture. The duct can be located proximate to an opening in a tip of a fuel injector. An ignition assist component can be located downstream of the duct to facilitate ignition of the fuel/charge-gas mixture. |
| Use: Fuel injection system for mixing fuel and charge-gas in a combustion chamber. |
| Advantage: Enhance and optimize the degree of fuel or oxidizer mixing, yielding lower emissions, higher combustion efficiencies, and improved flame stability. |
| Novelty: The fuel injection system comprises a fuel injector (140) having a first opening (146), and a jet of fuel is injected through the first opening into a combustion chamber (105). The duct (150) has a tubular configuration and is aligned such that the jet of fuel exiting the first opening of the fuel injector is injected through the duct and into the combustion chamber. The duct is heated to facilitate ignition of the fuel as it exits a discharge end of the duct. A second opening arranged at one end of the duct such that the jet of fuel enters the duct by way of the second opening. The second opening arranged such that a gap exists between the first opening of the fuel injector and the second opening. |
| Filed: 8/1/2017 |
| Application Number: US15666321A |
| Tech ID: SD 14297.0 |
| This invention was made with Government support under Contract No. DE-NA0003525 awarded by the United States Department of Energy/National Nuclear Security Administration. The Government has certain rights in the invention. |
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