Velocity Field Characteristics in Motored Two-Stroke Ported Engines

Format:

Conference/Event

Author/Creator:

Ghandhi, Jamshed B., author.

Conference Name:

International Congress & Exposition (1992-02-24 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1992

Summary:

Particle image velocimetry (PIV) was used to study the velocity field characteristics in motored two-stroke ported engines. Measurements of the two-dimensional velocity field were made at the midplane of the clearance volume for bowl-in-head and disk combustion chamber geometries. Measurements were also obtained for two scavenging port geometries, id est a loop-scavenged engine and a loop-scavenged engine with a boost portraitResults from this study show that in-cylinder geometry had a dominant effect on the flow structure observed at TDC. For example, with the boost-port scavenging crankcase, the disk-shaped chamber showed a turbulent flow-field at TDC with little large scale motion. In contrast, addition of a squish flow from the bowl-in-head geometry produced an organized cross-chamber flow.The addition of a boost port also changed the flow structure markedly. A large-scale swirl flow was observed in the engine that did not contain a boost portrait In contrast, the boost port apparently breaks down the tendency to swirl

Notes:

Vendor supplied data

Publisher Number:

920419

Access Restriction:

Restricted for use by site license