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A Computational Study of the Effects of Spark Location on the Performance of a Turbulent Jet Ignition System
Technical Paper
2016-01-0608
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
In this purely computational study, fluid dynamic simulations with active combustion are performed for a Turbulent Jet Ignition (TJI) system installed in a rapid compression machine. The simulations compare the effects that the location of the TJI system’s spark ignition source inside the TJI’s prechamber have on the combustion within the system through the use of four simulations, which are all identically setup with the same initial and boundary conditions except for the location of their respective ignition sources. The four ignition sources are located along the centerline of the axisymmetric prechamber and at varied distances from the orifice exit of the prechamber. Comparison of the simulations demonstrate that the locations furthest from the orifice produce better main chamber ignition as reflected in shorter 0-10% mass fraction burn times. Meanwhile all three of the test cases that were not closest to the orifice all produced similar 10-90% mass fraction burn times. Finally, ignition sources located lower in the prechamber produced hot jets for longer durations but with slower velocities.
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Citation
Thelen, B. and Toulson, E., "A Computational Study of the Effects of Spark Location on the Performance of a Turbulent Jet Ignition System," SAE Technical Paper 2016-01-0608, 2016, https://doi.org/10.4271/2016-01-0608.Also In
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