Accession Number : ADP009005

Title :   Particle Image Velocimetry Measurements of IC Engine Valve Flows,

Corporate Author : WISCONSIN UNIV-MADISON DEPT OF MECHANICAL ENGINEERING

Personal Author(s) : Lee, Janghee ; Farrell, P. V.

Report Date : 23 JUL 1992

Pagination or Media Count : 6

Abstract : The velocity profile around the intake valve of an internal combustion engine was experimentally investigated by means of particle image velocimetry. A simulated engine setup was constructed using a diesel engine cylinder head and an acrylic cylinder with glass optical windows. The flow was generated by an axial fan on a standard flow bench. The instantaneous two dimensional velocity field was measured in a plane perpendicular to the cylinder head near one of the intake valves. Measurements were taken with a motor driven cam actuating the two intake valves. Measurements were made for several values of cam rotation rate and at several values of cam angle (valve lift). The double exposed film was interrogated by an optical image analysis method, and velocity vectors were obtained at 0.5 mun intervals in the flow field. The results show the expected large shear flows recognizable vortices in the flow field. (Author)

Descriptors :   *FLOW FIELDS, *DIESEL ENGINES, *FUEL SPRAYS, INTAKE VALVES, SIMULATION, FLUID MECHANICS, FLOW VISUALIZATION, VELOCIMETERS.

Subject Categories : Reciprocating and Rotating Engines
      Fluid Mechanics
      Optical Detection and Detectors

Distribution Statement : APPROVED FOR PUBLIC RELEASE