Fuel Injector Design Optimization for an Annular SCRAMJet Geometry (Invited)

2003 ◽  
Author(s):  
Christopher Steffen
Keyword(s):  
Design Optimization ◽  
Fuel Injector ◽  
Injector Design

scholarly journals OPTIMIZED FUEL INJECTOR DESIGN FOR MAXIMUM IN-FURNACE NOx REDUCTION AND MINIMUM UNBURNED CARBON

10.2172/7176 ◽  
1998 ◽  
Author(s):  
A F SAROFIM ◽  
R LISAUSKAS ◽  
D RILEY ◽  
E G EDDINGS ◽  
J BROUWER ◽  
...  
Keyword(s):  
Nox Reduction ◽  
Unburned Carbon ◽  
Fuel Injector ◽  
Injector Design

Development of a Liquid-Fueled, Lean-Premixed Gas Turbine Combustor

1993 ◽  
Vol 115 (3) ◽  
pp. 554-562 ◽  
Author(s):  
L. H. Cowell ◽  
K. O. Smith
Keyword(s):  
Gas Turbine ◽  
Performance Testing ◽  
Operating Conditions ◽  
Operating Parameters ◽  
Nox Emissions ◽  
Fuel Injector ◽  
Design Variables ◽  
Lean Premixed ◽  
Annular Combustor ◽  
Injector Design

Development of a lean-premixed, liquid-fueled combustor is in progress to achieve ultra-low NOx emissions at typical gas turbine operating conditions. A filming fuel injector design was tested on a bench scale can combustor to evaluate critical design and operating parameters for low-emissions performance. Testing was completed using No. 2 diesel. Key design variables tested include premixing length, swirler angle, injector centerbody diameter, and reduced liner cooling. NOx emissions below 12 ppmv at 9 bar pressure were measured. Corresponding CO levels were 50 ppmv. An optimized injector design was fabricated for testing in a three injector sector of an annular combustor. Operating parameters and test results are discussed in the paper.

Dynamic Modeling of a Piezoelectric Actuated Fuel Injector

2011 ◽  
Vol 133 (5) ◽  
Author(s):  
Chris A. Satkoski ◽  
Gregory M. Shaver ◽  
Ranjit More ◽  
Peter Meckl ◽  
Douglas Memering ◽  
...  
Keyword(s):  
Control System ◽  
Injection Rate ◽  
Fuel Injector ◽  
Fuel Injectors ◽  
Response Characteristics ◽  
Rate Shaping ◽  
System Verification ◽  
Reduce Emissions ◽  
And Control ◽  
Injector Design

As engine designers look for ways to improve efficiency and reduce emissions, piezoelectric actuated fuel injectors for common rail diesel engines have shown to have improved response characteristics over solenoid actuated injectors and may allow for enhanced control of combustion through multipulse, closely spaced injections or rate shaping. This paper outlines the development of an 11 state simulation model for a piezoelectric fuel injector and associated driver that can be used for injector design and control system verification. Nonmeasureable states of the model are plotted and analyzed, while measurable quantities including injection rate, piezo stack voltage, and piezo stack current are validated against experimental injector rig data for two different rail pressures.

Fuel Injector Design Based on 2D Technology

2012 ◽  
Vol 482-484 ◽  
pp. 1943-1946
Author(s):  
Li Dan Chen ◽  
Huang Xiang Shan
Keyword(s):  
High Speed ◽  
Fuel Injection ◽  
Injection Rate ◽  
Injection System ◽  
Fuel Injector ◽  
Electromagnetic Valve ◽  
Spool Valve ◽  
Fuel Injection Rate ◽  
Injector Design ◽  
The Ideal

Through the discussion of main shortages of the high-speed electromagnetic valve used in electronic fuel injection system, the author introduced a new design thought of fuel injector based on 2D technology. Axial displacement of controlling valve was used to control the volume of gushing oil, while radial revolution of spool valve was used to change the time of injection. Additionally, mathematic modeling and MATLAB simulating indicated that, the injector designed based on 2D technology acquired the advantages of quick response and also realized the ideal shape of fuel injection rate.

scholarly journals Multi-Objective Design Optimization of a Variable Geometry Spray Fuel Injector

2014 ◽  
Vol 136 (4) ◽  
Author(s):  
J. R. Archer ◽  
Tiegang Fang ◽  
Scott Ferguson ◽  
Gregory D. Buckner
Keyword(s):  
Design Optimization ◽  
High Performance ◽  
Pareto Frontier ◽  
Spray Angle ◽  
Design Parameters ◽  
Variable Geometry ◽  
Fuel Injector ◽  
Multi Objective ◽  
Multi Objective Genetic Algorithm ◽  
Design Variables

This paper explores the simulation-based design optimization of a variable geometry spray (VGS) fuel injector. A multi-objective genetic algorithm (MOGA) is interfaced with commercial computational fluid dynamics (CFD) software and high performance computing capabilities to evaluate the spray characteristics of each VGS candidate design. A three-point full factorial experimental design is conducted to identify significant design variables and to better understand possible variable interactions. The Pareto frontier of optimal designs reveals the inherent tradeoff between two performance objectives—actuator stroke and spray angle sensitivity. Analysis of these solutions provides insight into dependencies between design parameters and the performance objectives and is used to assess possible performance gains with respect to initial prototype configurations. These insights provide valuable design information for the continued development of this VGS technology.

An optimum fuel injector design

1999 ◽  
Vol 21 (4/5) ◽  
pp. 395 ◽  
Author(s):  
Ching Hsieh ◽  
Kong Ping Oh
Keyword(s):  
Fuel Injector ◽  
Injector Design

Data-Driven Modeling of Large-Eddy Simulations for Fuel Injector Design

2021 ◽  
Author(s):  
Petro Junior Milan ◽  
Sudeepta Mondal ◽  
Roberto Torelli ◽  
Bethany Lusch ◽  
Romit Maulik ◽  
...  
Keyword(s):  
Large Eddy Simulations ◽  
Data Driven ◽  
Fuel Injector ◽  
Large Eddy ◽  
Data Driven Modeling ◽  
Injector Design
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