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Effect of Partial Fumigation of the Intake Air with Fuel on a DI Diesel Engine Emissions
ISSN: 0148-7191, e-ISSN: 2688-3627
Published March 04, 2002 by SAE International in United States
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Results of an experimental study of a DI Diesel engine are presented, which show the influence of partial premixing fumigation of the intake air with diesel fuel on the exhaust emissions and the engine performance parameters. Exhaust emissions of NOx, CO, UHC, TPM, SOF and Carbon were measured and quantified. Engine performance parameters include the event of the start of combustion and fuel consumption besides other parameters, which were published elsewhere. The study also showed that during a “normal operation” of a DI diesel engine, no emissions trade-off exists between NOx and TPM. Rather these emissions need separate technological measures for their specific control. Two methods of diesel fumigation were used. The difference between these two methods was the degree of premixing of diesel fuel with the intake air. The first technique used a high-pressure fine diesel spray onto a glow plug and the second technique used an electric vaporizer for producing perfectly prevaporised superheated diesel fumes at 350 °C. A low emissions version of Perkins 4-236 engine with squish lip piston was run both with and without fumigation at two speeds 1200 rpm and 2200 rpm. Roughly covering both city and highway running conditions. Results also showed that the onset of premixed combustion after the completion of ignition delay was advanced due to corresponding reduction in the ignition delay with the increase in the fumigation rate. As the engine speed was increased from 1200 rpm to 2200 rpm, the emissions of TPM, Carbon and UHC were reduced by more than 70% and that of SOF were reduced by more than 50%. These reductions in emissions were accompanied by substantial reduction in knocking tendency of the engine due to partial premixing of fuel with the intake air. Results were also compared with other published results which also showed the advantage of partially premixed fumigation over that of fully premixed fumigation in terms of the emissions of CO, UHC and engine efficiency, It was also observed that the degree of premixing of fuel in the form of fully vaporized superheated fuel vapor in comparison to that of fine spray with the intake air also reduced NOx by 45%, UHC by 50%, TPM by 40%, SOF by 50% and Carbon by 40%.
CitationZaidi, K., Andrews, G., and Greenhaugh, J., "Effect of Partial Fumigation of the Intake Air with Fuel on a DI Diesel Engine Emissions," SAE Technical Paper 2002-01-1156, 2002, https://doi.org/10.4271/2002-01-1156.
Compression Ignition Combustion and In-Cylinder Diesel Particulates and Nox Control
Number: SP-1698 ; Published: 2002-03-04
Number: SP-1698 ; Published: 2002-03-04
- Koltasakis G.C. and Stanatelos A.M.: “Catalytic Automotive Exhaust After-Treatment”, Prog. Energy Combust. Sci., Vol. 23, pp 1-39, 1997.
- Ashley C.: “Automotive Engineer”, Vol. 18, No. 5, I.Mech.Engr. October/November 1993.
- Osses M.A., Andrews G.E. and Greenhough J.: “Diesel Fumigation Partial Premixing for Reduced Particulate Soot Fraction Emissions”, SAE 980532, 1998.
- Mase Y., Kawashima J., Eguchi M. and Sato T.: “Nissan's New Multivalve DI Diesel Engine Series”, SAE 981039, 1998.
- Zaidi K., Andrews G.E. and Greenhough J. “Diesel Fumigation Partial Premixing for Reducing Ignition Delay and Ammplitude of Pressure Fluctuation”, SAE 980535, 1998.
- Dickey D.W., Ryan W. and Matheaus A.C.: “NOx control in a Heavy duty Diesel Engine - What is the Limit?” SAE 980174, 1998.
- Christensen M., Johansson B., Amnjus P. and Moss F.: “Supercharged Homogenous Charge Compression Ignition”, SAE 980878, 1998.
- Ryan T.W., Callahan T.J.: “Homogeneous Charge Compression Ignition of Diesel Fuel”, SAE 961160, 1996.
- Ishii H., Koki N., Suzuki H. and Osaka M.: “Exhaust Purification of Diesel Engines by Homogeneous Charge with Compression Ignition Part I. Analysis of Combustion Phenomena and NOx Formation by Numerical Simulation with Experiment”, SAE 970313, 1997.
- Suzuki H., Koike N., Ishii H. and Odaka M., Exhaust Purification of Diesel Engines by Homogeneous Charge with Compression Ignition Part II, Experimental Investigation of Combustion and Exhaust Emission and Behaviour Under Premixed Homogeneous Charge Compression”, SAE 970315, 1997.
- Suzuki H., Koike N. and Odaka M.O.: “Combustion Control Method of Homogeneous Charge Engines”, SAE 9800509, 1998.
- Takeda Y., Nakagome K. and Miimura K.: “Emission Characteristics of Premixed Lean Diesel Combustion with Extremely Early Staged Fuel Injection”, SAE 961163, 1996.
- Harda A., Shimazaki N., Sasaki S., Miyamoto T., Akagawa H., Tsujimuwa K.: “The Effect of Mixture Formation on Premixed Lean Diesel Combustion Engine”, SAE 980533, 1998.
- Nakagome K., Shimazaki N., Niimura K. and Kobayashi S., “Combustion and Emission Characteristics of Premixed Lean Diesel Combustion Engine, SAE 970898, 1997.
- Hashijuml T., Miyamato K., Akagawa H., Tsujimura K.: “Combustion and Emission Characteristics of Multiple Stage Diesel Combustion”, SAE 980505, 1998.
- Degobert P.: “Automobile and Pollution”, SAE 920150, 1992.
- Zaidi K.,: Effect of Fumigation on Diesel Engine Emissions”, PhD Thesis, University of Leeds, 1998.
- Odaka M., Suzuki H., Koike N. and Ishii H.: “Search for Optimising Control of Homogeneous Charge Diesel Combustion”, SAE 1999-01-0184, March 1999.
- Iwabuchi Y., Kawai K., Shoji T. and Takeda Y.: “Trial of a New Concept Diesel Combustion System - Premixed Compression”, SAE 1999-01-0183, 1999.