Investigations of the Formation and Oxidation of Soot Inside a Direct Injection Spark Ignition Engine Using Advanced Laser-Techniques

2010-01-0352

04/12/2010

Event
SAE 2010 World Congress & Exhibition
Authors Abstract
Content
In this work the formation and oxidation of soot inside a direct injection spark ignition engine at different injection and ignition timing was investigated. In order to get two-dimensional data during the expansion stroke, the RAYLIX-technique was applied in the combustion chamber of an optical accessible single cylinder engine. This technique is a combination of Rayleigh-scattering, laser-induced incandescence (LII) and extinction which enables simultaneous measurements of temporally and spatially resolved soot concentration, mean particle radii and number densities. These first investigations show that the most important source for soot formation during combustion are pool fires, i.e. liquid fuel burning on the top of the piston. These pool fires were observed under almost all experimental conditions.
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DOI
https://doi.org/10.4271/2010-01-0352
Pages
15
Citation
Velji, A., Yeom, K., Wagner, U., Spicher, U. et al., "Investigations of the Formation and Oxidation of Soot Inside a Direct Injection Spark Ignition Engine Using Advanced Laser-Techniques," SAE Technical Paper 2010-01-0352, 2010, https://doi.org/10.4271/2010-01-0352.
Additional Details
Publisher
Published
Apr 12, 2010
Product Code
2010-01-0352
Content Type
Technical Paper
Language
English