Performance Evaluation Of A High Bandwidth Liquid Fuel Modulation Valve For Active Combustion Control
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Author | : National Aeronautics and Space Adm Nasa |
Publisher | : Independently Published |
Total Pages | : 30 |
Release | : 2019-01-13 |
Genre | : Science |
ISBN | : 9781793959096 |
At the NASA Glenn Research Center, a characterization rig was designed and constructed for the purpose of evaluating high bandwidth liquid fuel modulation devices to determine their suitability for active combustion control research. Incorporated into the rig s design are features that approximate conditions similar to those that would be encountered by a candidate device if it were installed on an actual combustion research rig. The characterized dynamic performance measures obtained through testing in the rig are planned to be accurate indicators of expected performance in an actual combustion testing environment. To evaluate how well the characterization rig predicts fuel modulator dynamic performance, characterization rig data was compared with performance data for a fuel modulator candidate when the candidate was in operation during combustion testing. Specifically, the nominal and off-nominal performance data for a magnetostrictive-actuated proportional fuel modulation valve is described. Valve performance data were collected with the characterization rig configured to emulate two different combustion rig fuel feed systems. Fuel mass flows and pressures, fuel feed line lengths, and fuel injector orifice size was approximated in the characterization rig. Valve performance data were also collected with the valve modulating the fuel into the two combustor rigs. Comparison of the predicted and actual valve performance data show that when the valve is operated near its design condition the characterization rig can appropriately predict the installed performance of the valve. Improvements to the characterization rig and accompanying modeling activities are underway to more accurately predict performance, especially for the devices under development to modulate fuel into the much smaller fuel injectors anticipated in future lean-burning low-emissions aircraft engine combustors. Saus, Joseph R. and DeLaat, John C. and Chang, Clarence T. and Vrnak, Daniel R. Glenn Rese
Author | : Society of Automotive Engineers |
Publisher | : |
Total Pages | : 1646 |
Release | : 1965 |
Genre | : Engineering |
ISBN | : |
Author | : |
Publisher | : |
Total Pages | : 294 |
Release | : 2004 |
Genre | : Acoustic emission |
ISBN | : |
Author | : |
Publisher | : |
Total Pages | : 794 |
Release | : 2005 |
Genre | : Dissertations, Academic |
ISBN | : |
Author | : |
Publisher | : |
Total Pages | : 500 |
Release | : 1995 |
Genre | : Aeronautics |
ISBN | : |
Author | : |
Publisher | : |
Total Pages | : 1016 |
Release | : 1999 |
Genre | : Aeronautics |
ISBN | : |
Author | : National Research Council |
Publisher | : National Academies Press |
Total Pages | : 373 |
Release | : 2011-06-03 |
Genre | : Science |
ISBN | : 0309216389 |
Various combinations of commercially available technologies could greatly reduce fuel consumption in passenger cars, sport-utility vehicles, minivans, and other light-duty vehicles without compromising vehicle performance or safety. Assessment of Technologies for Improving Light Duty Vehicle Fuel Economy estimates the potential fuel savings and costs to consumers of available technology combinations for three types of engines: spark-ignition gasoline, compression-ignition diesel, and hybrid. According to its estimates, adopting the full combination of improved technologies in medium and large cars and pickup trucks with spark-ignition engines could reduce fuel consumption by 29 percent at an additional cost of $2,200 to the consumer. Replacing spark-ignition engines with diesel engines and components would yield fuel savings of about 37 percent at an added cost of approximately $5,900 per vehicle, and replacing spark-ignition engines with hybrid engines and components would reduce fuel consumption by 43 percent at an increase of $6,000 per vehicle. The book focuses on fuel consumption-the amount of fuel consumed in a given driving distance-because energy savings are directly related to the amount of fuel used. In contrast, fuel economy measures how far a vehicle will travel with a gallon of fuel. Because fuel consumption data indicate money saved on fuel purchases and reductions in carbon dioxide emissions, the book finds that vehicle stickers should provide consumers with fuel consumption data in addition to fuel economy information.
Author | : |
Publisher | : |
Total Pages | : 410 |
Release | : 1989 |
Genre | : Mechanics, Applied |
ISBN | : |
Author | : Nicholas Goodnight |
Publisher | : Jones & Bartlett Learning |
Total Pages | : 769 |
Release | : 2019-02-20 |
Genre | : Transportation |
ISBN | : 1284102068 |
Automotive Engine Performance, published as part of the CDX Master Automotive Technician Series, provides technicians in training with a detailed overview of modern engine technologies and diagnostic strategies. Taking a “strategy-based diagnostic” approach, it helps students master the skills needed to diagnose and resolve customer concerns correctly on the first attempt. Students will gain an understanding of current diagnostic tools and advanced performance systems as they prepare to service the engines of tomorrow.
Author | : |
Publisher | : |
Total Pages | : 1104 |
Release | : |
Genre | : Coal slurry pipelines |
ISBN | : |