The effect of swirl on spark-ignition engine combustion.
1987; Japan Society Mechanical Engineers; Volume: 30; Issue: 270 Linguagem: Inglês
10.1299/jsme1987.30.1995
ISSN0913-185X
AutoresYoshisuke HAMAMOTO, Eiji Tomita, Yutaka TANAKA, Tetsuya Katayama, Yasuki Tamura,
Tópico(s)Rocket and propulsion systems research
ResumoIn order to investigate the effect of swirl on combustion in a spark-ignition engine, a new experimental apparatus, namely, the single-event engine was prepared. The swirl flow in the cylinder was visualized by a smoke-wire method, and a laser Doppler anemometer and a hot-wire anemometer were adopted for the velocity measurement. The turbulence intensity was determined on the basis of the hot-wire data. A stoichiometric propane-air mixture was ignited at the center of the combustion chamber ; thus, the flame was propagated almost axisymmetrically in the flow field at various swirl intensities with no squish flow. The burning velocity, ST, and the thickness of burning zone, δT, were determined in the spark-ignition engine cylinder. The result show that ST and δT increase with increasing the turbulence intensity, and that δT is correlated linearly with ST except under the condition of weak turbulence.
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