Engine Hydrocarbon Concentration Measurements: A Comparison between a Sampling Probe and Raman Spectroscopy Sandia National Laboratories Livermore, CA

Format:

Conference/Event

Author/Creator:

Johnston, Sheridan C., author.

Conference Name:

SAE International Congress & Exposition (1982-02-22 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1982

Summary:

An experiment designed to quantify probe-induced aerodynamic perturbations to in-cylinder sampling measurements in a motored engine is discussed. Good agreement was observed between concentration measurements obtained with a sampling probe utilizing a flame ionization detector and those obtained by laser Raman scattering at the probe tip. However, large differences were found between the Raman-measured concentration profiles obtained with and without the probe installed in the engine. These differences occurred because of probe-induced perturbations to the in-cylinder air motion which decreased the mean velocity and increased local mixing rates. Effects due to probe orientation in the flow, probe insertion depth, probe inflow, and far-field flow perturbations are reported

Notes:

Vendor supplied data

Publisher Number:

820499

Access Restriction:

Restricted for use by site license