INVESTIGATIONS ON THE INTAKE INDUCED AIR SWIRL OF A STRATIFIED CHARGE ENGINE. THEORETICAL AND EXPERIMENTAL INVESTIGATIONS
PENNSYLVANIA STATE UNIV UNIVERSITY PARK COLL OF ENGINEERING AND ARCHITECTURE
Pagination or Media Count:
Various methods of generating air swirl in a four-stroke-cycle piston engine cylinder were investigated on a flow model constructed to simulate the engine intake process under steady flow conditions. The investigation was centered on the production and control of the swirl for a spark-ignited stratified charge engine in which stratification is produced by the interaction of the injected fuel spray with the swirling air in the cylinder. Flow mapping and observations were conducted in the model with paddle wheels, tufted grid, and a hot-wire anemometer. Turbulent intensities were mapped and transient flows were studied also, using hot-wire techniques. The model flow results were analyzed using basic equations of viscous fluids. This information was then extended to postulate the character of the actual flow in the engine cylinder during compression.
- Reciprocating and Rotating Engines
- Combustion and Ignition