Technical Paper
A Study on Turbulence Generators for the Intake Manifold of Dilute Spark-Ingnition Engines
1992-09-01
921667
Lean burn spark-ignition engines (S.I.E) are currently under scrutiny for their fuel economy and pollution reduction potential while using fuels with ordinary anti-knock quality. This study was concentrated on turbulence generation in a simulated inlet manifold of S.I.E. via the use of several designs of turbulence generators. A special test set-up was specifically designed and built for this study, and special measuring probes were constructed, developed and calibrated to find out the turbulence level behind each turbulence generator. Four types of swirl and turbulence generators were used and tested to find out the optimum design and operational parameters. The investigation has been carried out using air as the working medium, while the effect of flow velocity, temperature and turbulence generator design parameters were studied and their effect on the relative turbulence kinetic energy was experimentally found out.