Transient Spray Cone Angles in Pressure-Swirl Injector Sprays 2004-01-2939
The transient cone angle of pressure swirl sprays from injectors intended for use in gasoline direct injection engines was measured from 2D Mie scattering images. A variety of injectors with varying nominal cone angle and flow rate were investigated. The general cone angle behavior was found to correlate well qualitatively with the measured fuel line pressure and was affected by the different injector specifications. Experimentally measured modulations in cone angle and injection pressure were forced on a comprehensive spray simulation to understand the sensitivity of pulsating injector boundary conditions on general spray structure. Ignoring the nozzle fluctuations led to a computed spray shape that inadequately replicated the experimental images; hence, demonstrating the importance of quantifying the injector boundary conditions when characterizing a spray using high-fidelity simulation tools.
Citation: Snyder, J., Grover, R., Sick, V., and Assanis, D., "Transient Spray Cone Angles in Pressure-Swirl Injector Sprays," SAE Technical Paper 2004-01-2939, 2004, https://doi.org/10.4271/2004-01-2939. Download Citation
Author(s):
Jordan A. Snyder, Ronald O. Grover, Volker Sick, Dennis N. Assanis
Affiliated:
The University of Michigan
Pages: 10
Event:
2004 Powertrain & Fluid Systems Conference & Exhibition
ISSN:
0148-7191
e-ISSN:
2688-3627
Also in:
SI Engine Performance and Additives, Gasoline Engine Cold Start, and Direct Injection-SP-1895, SAE 2004 Transactions Journal of Engines-V113-3
Related Topics:
Fuel lines
Pressure
Simulation and modeling
Nozzles
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