This content is not included in your SAE MOBILUS subscription, or you are not logged in.
Characterization of RME, RME Aged and Mineral Diesel Fuel Injected by a Common Rail Apparatus for EURO5 Diesel Engines
ISSN: 0148-7191, e-ISSN: 2688-3627
Published August 30, 2011 by SAE International in United States
Annotation ability available
Alternative diesel fuels from renewable sources (biodiesels) have increased significantly interest due to their potential CO₂ emission benefits, capability to reduce unburned hydrocarbons and particulate matter emissions, biodegradability and non-toxicity.
Biodiesels undergo ageing effects due to autoxidation processes of their molecular chains. Ageing leads to a variety of decomposition products like peroxides, alcohols, aldehydes and carboxylic acids. They are detectable as alterations of chemical properties, odor and taste (rancidity).
The characteristics of Rapeseed Methylester (RME), RME aged and diesel sprays have been analyzed for different injection strategies in engines. The tests have been performed on a Bosch second generation common rail solenoid-driven fuel injection system capable of 160 MPa maximum injection pressure, fitted on EURO5 diesel engine for passenger car applications. Three different flux number injectors have been adopted at the injection pressures of 40, 80 and 160 MPa with 1.0, 0.6 and 0.3 ms solenoid energizing time. The characterization of the injection process for the defined fuels has been carried out in terms both of fuel injection rate as well as of spatial and temporal fuel distribution in a quiescent chamber in non-evaporative conditions.
Largest discharging nozzle area produced highest fuel injection rate while smallest area created longest injection duration at parity of solenoid exciting time. Digital processing of the spray images, captured at different instant from the start of injection, has enabled the characterization of the fuel dispersion in terms of tip penetration and cone angle. Differentiate behavior of the injected fuel has been noted for the diverse nozzles at early time from the start of injection.
Finally, a detailed reconstruction of the jet images, at very early time from the start of injection, has highlighted repetitive anomalies in the jet-to-jet propagations. Their absolute values and stabilizing time depend on the nozzle type and injection pressure. At late time, the sprays uniform themselves with a homogeneous pattern in the vessel.
CitationAllocca, L. and Montanaro, A., "Characterization of RME, RME Aged and Mineral Diesel Fuel Injected by a Common Rail Apparatus for EURO5 Diesel Engines," SAE Technical Paper 2011-01-1938, 2011, https://doi.org/10.4271/2011-01-1938.
- AA.VV., “Biofuels for transport - An international perspective”, IEA, 2007
- Janaun, J., Ellis, N., “Perspectives on biodiesel as a sustainable fuel”, Renewable and Sustainable Energy Reviews 14, pp.1312-1320, 2010
- Murugesan, A., Umarani, C., Subramanian, R., Nedunchezhian, N., “Bio-diesel as an alternative fuel for diesel engines-a review”, Renew Sustainable Energy Rev 13 (3), pp. 653-662, 2009
- AA.VV., “Biofuels Progress Report”, Commission of the European Communities, Bruxelles, 2007
- He, C., Ge, Y. S., Tan, J., Han, X. K., “Spray Properties of Alternative Fuels: a Comparative Analysis of Biodiesel and Diesel”, Int. J. Energy Res. 32, pp 1329-1338, 2008
- Gao, Y., Deng, J., Li, C., Dang, F., Liao, Z., Wu, Z., Li, L., “Experimental Study of the Spray Characteristics of Biodiesel Based on Inedible Oil”, Biotechnology Advances 27, pp 616-624, 2009
- Allocca, L., Mancaruso, E., Montanaro, A., Sequino, L., Vaglieco, B.M.: “Effect of Mineral and Biodiesel Compositions on Spray Evolution and Mixture Distribution”, THIESEL 2010, pp. 39-50
- Szybist, J.P., Boehman, A.L.,: “Behavior of a Diesel Injection System with Biodiesel Fuel”- SAE Paper 2003-01-1039.
- Miers, S.A., Kastengren, A.L., El-Hannouny, E.M., Longman, D.E: “An experimental Investigation of Biodiesel Injection Characteristics Using a Light-Duty Diesel Injector”, ASME ICEF 2007-1735
- Mittelbach, M., Gangl, S.: Long Storage Stability of Biodiesel Made from Rapeseed and Used Frying Oil, Paper no. J9862 in JAOCS 78, 573-577 (June 2001)
- Bosch, W., SAE Technical Paper 660794, 1966
- Allocca, L., Montanaro, A., Cipolla, G., Vassallo, A., “Spatial-Temporal Characterization of Alternative Fuel Sprays from a Second-Generation Common-Rail Fuel Injection System for Euro4 Passenger Car Application”, SAE Paper 2009-01-1856, 2009
- Allocca, L., Mancaruso, E., Montanaro, A., Vaglieco, B. M., Vassallo, A., “Renewable Biodiesel/Reference Diesel Fuel Mixtures Distribution in Non-Evaporating and Evaporating Conditions for Diesel Engines” SAE Paper 2009-24-0054
- Alfuso, S., Allocca, L., Caputo, G., Corcione, F.E., Montanaro, A., and Valentino, G., “Experimental Investigation of a Spray from a Multi-jet Common Rail Injection System for Small Engines”, SAE Paper SAE_NA 2005-24-90, 2005
- Alfuso, S., Allocca, L., Corcione, F.E., Di Stasio, S., “Image Diagnostics of Common Rail Diesel Sprays Evolving in Nitrogen Ambient at Different Densities,” ICE'99 Internal Combustion Engines: Experiments and Modeling, Capri 12-16 September, 1999.
- Di Stasio, S., Alfuso, S., Allocca, L., Corcione, F.E.: “Experimental Study on the Atomization Mechanism for Fuel Sprays Evolving in Atmospheres of Different Nature and Density,” ImechE Seminar Publication 1999-17:241-255, 1999.
- Desantes, J.M., Arregle, J., Ruiz, S., Delage, A. “Characterisation of the injection-combustion process in a D.I. diesel engine running with rape oil methyl ester”. SAE Paper No. 1999-01-1497, 1999.
- Allocca, L., Iannuzzi, S., Montanaro, A., Valentino, G., “Biodiesel/Mineral Diesel Fuel Mixtures: Spray Evolution and Engine Performance and Emissions Characterization”, Energy (2010), pagg. 1-9, doi: 10.1016/j.energy.2010.10.052