In-Cylinder Measurement of Particulate Number Density and Size 820462
A technique to determine time and space resolved particulate number density and size in the cylinder of an operating diesel engine is described and sample data presented. Basically the technique uses Mie scattering of a laser beam passed through the jet of gases leaking through a 0.015 diameter orifice inserted into the combustion chamber. Number density and size are inferred from measurements of scattering as a function of angle of scattering. The data show a linear relationship between exhaust measurements using this technique and Bosch smoke meter readings as well as an approximately linear relationship between in-cylinder measurements of number density and mass measurements made by collecting particulates flowing through the 0.015 in, orifice on a filter.
Citation: Xu, H., Myers, P., and Uyehara, O., "In-Cylinder Measurement of Particulate Number Density and Size," SAE Technical Paper 820462, 1982, https://doi.org/10.4271/820462. Download Citation
Author(s):
Hang Xu, P. S. Myers, O. A. Uyehara
Affiliated:
Mechanical Engineering Dept., Zhejiang Univ., (People’s Republic of China), Mechanical Engineering Dept., Univ. of Wisconsin-Madison, Madison, WI
Pages: 14
Event:
SAE International Congress and Exposition
ISSN:
0148-7191
e-ISSN:
2688-3627
Also in:
Diesel Engine Combustion, Emissions, and Particulates-P-107, SAE 1982 Transactions-V91-A
Related Topics:
Combustion chambers
Diesel / compression ignition engines
Particulate matter (PM)
Engine cylinders
SAE MOBILUS
Subscribers can view annotate, and download all of SAE's content.
Learn More »