This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Renewable Biodiesel/Reference Diesel Fuel Mixtures Distribution in Non-Evaporating and Evaporating Conditions for Diesel Engines
Technical Paper
2009-24-0054
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
In spite of the recent trend, voted toward the reduction of renewable energy sources deriving from crops, the EC Commission proposes that the proportion of energy from renewable sources in the transportation sector should be at least 20 % of its final energy consumption by the year 2020. In this framework, the activities aiming to study the effects on engine performances, emissions and fuel consumption of alternative diesel fuel receive continue stimulations and supports. In this paper, results of the different behavior of biodiesel fuels in the injection process and their impact on the air-fuel mixture preparation are reported. The injection process characterization has been carried out in a non-evaporative high-density ambient in order to measure the fuel injection rate and the spatial and temporal distribution of the fuel. Moreover, the injection and combustion processes have been characterized in an optically accessible single cylinder Common Rail diesel engine that represented evaporative conditions similar to the real engine.
The studied injections have been chosen for engine working conditions of 1500 rpm at 2 bar of BMEP. A double injection strategy (pilot+main) has been adopted and a pilot energizing time has been calibrated to deliver 1.0 mm3. First generation of biodiesels like Rapeseed Methyl Ether (RME) and Soybean Methyl Ether (SME) and second generation of biodiesel like gas to liquid (GTL) have been mixed with reference diesel fuel (50% + 50%) and characterized in non-evaporating ambient while pure diesel fuel and its GTL mixture have been studied in evaporating ambient.
Images of evolving fuel in non-evaporative conditions, captured by a high resolution CCD camera at different instant from the start of injection and for different operative conditions, have been processed extracting the main parameters of the jet evolution: tip penetration, spray-cone angle, spray density distribution. These data have been also acquired in the combustion chamber of the optical diesel engine by means of a high resolution CCD camera synchronized with the injection events. Moreover the combustion processes have been studied and the pollutant emissions have been measured for several engine working conditions and biodiesel mixes.
Recommended Content
Authors
Topic
Citation
Allocca, L., Mancaruso, E., Montanaro, A., Vaglieco, B. et al., "Renewable Biodiesel/Reference Diesel Fuel Mixtures Distribution in Non-Evaporating and Evaporating Conditions for Diesel Engines," SAE Technical Paper 2009-24-0054, 2009, https://doi.org/10.4271/2009-24-0054.Also In
References
- Krahl, J. Munack, A. Schroeder, O. Stein, H. Büenger, J. “Influence of Biodiesel and Different Designed Diesel Fuels on the Exhaust Gas Emissions and Health Effects” SAE Paper 2003-01-3199 2003
- Sharp, C. A. Howell, S. A. Jobe, J. “The Effect of Biodiesel Fuels on Transient Emissions From Modern Diesel Engines-Part I: Regulated Emissions and Performance” SAE Paper 2000-01-1967 2000
- Kawano, D., et al., “Application of Biodiesel Fuel to Modern Diesel Engine” SAE Paper 2006-01-0233 2006
- Alfuso, S. Allocca, L Caputo, G. Corcione, F.E. Montanaro, A. 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
- Bosch, W. “The Fuel Rate Indicator: a New Measuring Instrument for Display of the Characteristics of Individual Injection” SAE Paper 6607496 1966
- Wallace: I. “Injection Rate Gauge: Pass Off Information and User Instructions” Fuel & Engine Management Systems Graz December 2002
- Heywood, J. B. “Internal Combustion Engine Fundamentals” Mc Graw-Hill NewYork 1988
- Mancaruso, E. Merola, S. S. Vaglieco, B. M. “Study of the multi-injection combustion process in a transparent direct injection common rail diesel engine by means of optical techniques” International Journal of Engine Research Vol 9 No 6 483 498 2008
- Merola, S. S. Vaglieco, B. M. Corcione, F. E. Mancaruso, E. “In-cylinder Combustion Analysis by Flame Emission Spectroscopy of Transparent CR Diesel Engine” SAE Paper 2003-01-1112 2003
- Dec, J. E. Espey, C “Ignition and Early Soot Formation in a Dl Diesel Engine Using Multiple 2-D Imaging Diagnostics” SAE paper 950456 1995
- Allocca, L. Corcione, F.E. Costa, M. “Numerical and Experimental Analysis of Multiple Injection Diesel Sprays” SAE Paper 2004-01-1879 2004
- Naber, J. D. Siebers, D. L “Effects of Gas Density and Vaporization on Penetration and Dispersion of Diesel Sprays” SAE Paper 960034 1996
- Allocca, L. Montanaro, A. Vassallo, A. Cipolla, G. “Spatial-Temporal Characterization of Alternative Fuel Sprays from a Second-Generation Common-Rail Fuel Injection System for Euro4 Passenger Car Application” SAE Paper 09SFL-0165 2009