This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
A Study of the Dilution Effects on Particle Size Measurement from a Heavy-Duty Diesel Engine with EGR
Technical Paper
2001-01-0220
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Event:
SAE 2001 World Congress
Language:
English
Abstract
A study of particle size distributions was conducted on a Cummins M11 1995 engine using the Scanning Mobility Particle Sizer (SMPS) instrument in the baseline and downstream of the Catalyzed Particulate Filter (CPF). Measurements were made in the dilution tunnel to investigate the effect of primary dilution ratio and mixture temperature on the nuclei and accumulation mode particle formation. Experiments were conducted at two different engine modes namely Mode 11 (25% load - 311 Nm, 1800 rpm) and Mode 9 (75% load - 932 Nm, 1800 rpm). The nanoparticle formation decreased with increasing dilution ratios for a constant mixture temperature in the baseline as well as downstream of the CPF II for Mode 11 condition. At Mode 9 condition in the baseline, the dilution ratio had a little effect on the nanoparticle formation, since the distribution was not bimodal and was dominated by accumulation mode particles. However, the effect of dilution ratio on nanoparticle formation could be clearly seen downstream of the CPF II at Mode 9 condition and the nanoparticle formation decreased with increasing dilution ratios. The dilution ratio had no significant effect on the accumulation mode particle formation at both the modes in the baseline and downstream of the CPF II. The mixture temperature had no significant effect on the nanoparticle and accumulation mode particle formation for a constant dilution ratio at two different modes in the baseline and downstream of the CPF II. It was concluded that for the MTU dilution tunnel, the nano-particle formation decreases at higher dilution ratios (>40:1) and in addition to making measurements at lower dilution ratios (<15:1), the future particle size measurements will also be made at higher dilution ratios where less nanoparticles are formed.
Recommended Content
Citation
Suresh, A. and Johnson, J., "A Study of the Dilution Effects on Particle Size Measurement from a Heavy-Duty Diesel Engine with EGR," SAE Technical Paper 2001-01-0220, 2001, https://doi.org/10.4271/2001-01-0220.Also In
References
- Abdul-Khalek I.S. Kittelson D.B. Graskow B.R. Wei Q. 1998 “Diesel Exhaust Particle Size: Measurement Issue and Trends.” SAE Paper No. 980525
- Baumgard K.J. 1995 “The Effect of Fuel Sulfur and Engine Design on Diesel Exhaust Particle Size Distributions.” Michigan Technological University
- Bagley S.T. Baumgard K.J. Gratz L.D. Johnson J.H. Leddy D.G. 1996 “Characterization of Fuel and Aftertreatment Device Effects on Diesel Emissions.” Research Report No.76 Health Effects Institute September 1996
- Johnson J.H. Bagley S.T. Gratz L.D. Leddy D.G. 1994 “A Review of Diesel Particulate Control Technology and Emission Effects - 1992 Horning Memorial Award Lecture.” SAE Paper No. 940233
- Kittelson D.B. Abdul-Khalek I. 1998 “Nanoparticle Formation During Exhaust Dilution.” 2 nd ETH Workshop on Nanoparticle Measurement Zurich 7 August 1998
- Kreso A.M. Johnson J.H. Gratz L.D. Bagley S.T. Leddy D.G. 1998 “A Study of the Effects of Exhaust Gas Recirculation on Heavy-Duty Diesel Engine Emissions.” SAE Paper No. 981422
- Kruger M. Luders H. Luers B. Kaufmann R. Koch W. Kauffeldt T. 1997 “Influence of Exhaust Gas Aftertreatment on Particulate Characteristics of Vehicle Diesel Engines.” 58 1997
- Moran M.J Shapiro H.N. 1992 Fundamentals of Engineering Thermodynamics Fourth John Wiley and Sons, Inc. New York
- Shi J.P. Harrison R.M. 1999 “Investigation of Ultrafine Particle Formation during Diesel Exhaust Dilution.” Environmental Science and Technology 33 21 1999
- Suresh A. 2000 “A Study of the Effect of a Catalyzed Particulate Filter on the Emissions from a Heavy-duty Diesel Engine with EGR.” SAE Paper No. 2001-01-0910