This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Optical Investigation of Post-injection Strategy Impact on the Fuel Vapor within the Exhaust Line of a Light Duty Diesel Engine Supplied with Biodiesel Blends
Technical Paper
2013-01-1127
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
Multi-wavelength ultraviolet-visible extinction spectroscopy was applied to follow the evolution of fuel vapor injected by post-injection along the exhaust line of a common-rail turbocharged direct-injection diesel engine at moderate speed and load. The exhaust line was specifically designed and customized to allow the insertion of the optical access upstream of the Diesel Oxidation Catalyst.
During the experimental campaign, the engine was fuelled with commercial B5 fuel and a B30 v/v blend of RME and ultra low sulfur diesel, monitoring emissions upstream of the catalyst and exhaust gas temperature across the catalyst. Tests were performed at different engine operating conditions with particular attention to moderate speed and load.
The high temporal evolution of the UV-visible extinction measurements allowed to follow the evolution of the fuel vapor injected by post-injection during the transition from standard combustion mode to filter regeneration combustion mode, characterized by a higher amount of fuel injected into the exhaust line.
Results indicate that, in some engine operating conditions, the fuel vapor formed by post-injection does not completely contribute to the oxidation process over the catalyst since a negligible increase in temperature has been recorded across the catalyst.
Recommended Content
Authors
Topic
Citation
Merola, S., De Filippo, A., Valentino, G., Tornatore, C. et al., "Optical Investigation of Post-injection Strategy Impact on the Fuel Vapor within the Exhaust Line of a Light Duty Diesel Engine Supplied with Biodiesel Blends," SAE Technical Paper 2013-01-1127, 2013, https://doi.org/10.4271/2013-01-1127.Also In
References
- Baumann , R.P. Absorption Spectroscopy 1st London John Wiley & Sons, Inc. 1962
- Bohren , C. F. ; Huffman D. R. 1992 Absorption and Scattering of Light by Small Particles John Wiley & Sons, Inc.
- Herzfeld , K.F. Theory of Light Absorption in Simple Aromatic Compounds Proceedings of the American Philosophical Society 82 3 1940
- Zawadzki A. , Shrestha D.S. , He B. Biodiesel blend level detection using ultraviolet absorption spectra Trans ASABE 50 2007 1349 1353
- Zawadzki , A. , Shrestha D. , and He B. 2005 Use of a spectrophotometer for biodiesel quality sensing ASABE Paper No. 053133 St. Joseph, Mich. ASABE
- Halasinski T. M. , Salama F. and Allamandola L. J. Investigation of the ultraviolet, visible, and near-infrared absorption spectra of hydrogenated polycyclic aromatic hydrocarbons and their cations The Astrophysical Journal 628 555 566 2005
- Charalampopoulos T. T. , Chang H. In Situ Optical Properties of Soot Particles in the Wavelength Range from 340 nm to 600 nm Combustion Science and Technology 59 4-6 1988
- Dobbins R.A. , Mulholland G.W. , Bryner N.P. Comparison of a fractal smoke optics model with light extinction measurements Atmospheric Environment 28 1994 889 897
- Michel B. , Henning Th. , Jäger C. , Kreibig U. Optical extinction by spherical carbonaceous particles Carbon 37 1999 391 400
- Tornatore C. , Merola S.S. , Vaglieco B.M. Particle and nanoparticle characterization at the exhaust of internal combustion engines Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 222 11 2195 2217 2008
- Promvongsa J. , Vallikul P. , Fungtammasan B. , Grehan G. On Evaporation Constants of Biodiesel-Diesel Blends: The Effects of Blending Ratios Journal of Metals, Materials and Minerals 20 3 43 45 2010