The long time challenge for diesel engine manufacturers has been to reduce both particulate matter (PM) and NOx emissions simultaneously without sacrificing engine performance. One technique for reducing PM has been to inject air or oxygen-enriched air directly into the combustion chamber. Previous studies using the KIVA-3V computational fluid dynamics (CFD) model have shown benefits and the importance of the gas injection’s characteristics on the technique’s effectiveness in reducing emissions. Using a Caterpillar 3401E single cylinder engine, an experimental investigation has been conducted to demonstrate the effectiveness of an oxygen-enriched air injection system and fuel injection timing retard in reducing the NOx and the PM emissions in terms of both the particulate size and concentration. The gaseous emissions were measured using a Pierburg AMA 2000 gaseous emissions bench which included a chemiluminescent analyzer for NOx volumetric measurements, non-dispersive infrared (NDIR) analyzer for CO and CO2 measurements, and a parametric fuel cell for O2 measurements. PM emissions (i.e., soot particle concentration and size distribution) were measured using a TSI Model 3936 Scanning Mobility Particle Sizer (SMPS). The experimental observations regarding the effects of oxygen-enriched air injection on NOx and PM emissions were in accord with the previously reported results for late-cycle gas injection from a KIVA-3V model. The air injection technique additionally provided a low level of oxygen-enrichment during the compression cycle, with results similar to previous intake air oxygen-enrichment studies. A simultaneous reduction of NOx and particulates was demonstrated when the fuel injection timing characteristics were optimized in conjunction with the oxygen-enriched air injection. The experimental PM emissions were analyzed for number and size distributions and also found to be consistent with previously reported trends.
Skip Nav Destination
ASME 2006 Internal Combustion Engine Division Spring Technical Conference
May 7–10, 2006
Aachen, Germany
Conference Sponsors:
- Internal Combustion Engine Division
ISBN:
0-7918-4206-1
PROCEEDINGS PAPER
In-Cylinder Injection of Oxygen-Enriched Air to Reduce Diesel Exhaust Emissions
Douglas E. Longman,
Douglas E. Longman
Argonne National Laboratory, Argonne, IL
Search for other works by this author on:
Roger L. Cole,
Roger L. Cole
Argonne National Laboratory, Argonne, IL
Search for other works by this author on:
Suresh K. Aggarwal
Suresh K. Aggarwal
University of Illinois at Chicago, Chicago, IL
Search for other works by this author on:
Douglas E. Longman
Argonne National Laboratory, Argonne, IL
Roger L. Cole
Argonne National Laboratory, Argonne, IL
Suresh K. Aggarwal
University of Illinois at Chicago, Chicago, IL
Paper No:
ICES2006-1445, pp. 499-506; 8 pages
Published Online:
September 10, 2008
Citation
Longman, DE, Cole, RL, & Aggarwal, SK. "In-Cylinder Injection of Oxygen-Enriched Air to Reduce Diesel Exhaust Emissions." Proceedings of the ASME 2006 Internal Combustion Engine Division Spring Technical Conference. ASME 2006 Internal Combustion Engine Division Spring Technical Conference (ICES2006). Aachen, Germany. May 7–10, 2006. pp. 499-506. ASME. https://doi.org/10.1115/ICES2006-1445
Download citation file:
7
Views
Related Proceedings Papers
Related Articles
The Gasoline Diesel
Mechanical Engineering (September,2012)
Comparison of Filter Smoke Number and Elemental Carbon Mass From Partially Premixed Low Temperature Combustion in a Direct-Injection Diesel Engine
J. Eng. Gas Turbines Power (October,2011)
Effects of B20 on Emissions and the Performance of a Diesel Particulate Filter in a Light-Duty Diesel Engine
J. Eng. Gas Turbines Power (November,2010)
Related Chapters
Determination of the Effects of Safflower Biodiesel and Its Blends with Diesel Fuel on Engine Performance and Emissions in a Single Cylinder Diesel Engine
International Conference on Software Technology and Engineering, 3rd (ICSTE 2011)
Later Single-Cylinder Engines
Air Engines: The History, Science, and Reality of the Perfect Engine
The Stirling Engine
Air Engines: The History, Science, and Reality of the Perfect Engine