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An Optimization Study on the Control of NOx and Particulate Emissions from Diesel Engines
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Abstract
This is an optimization study on the use of filtered exhaust gas recirculation (EGR) to reduce the NO emissions of diesel engines. Control of the particulate emissions and provisions for filtered EGR were achieved by an Aerodynamically Regenerated Trap (ART) with collection efficiencies in the order of 99%. The amount of EGR was regulated to provide for substantial NO reduction, without unacceptably decreasing the thermal efficiency of the engine or increasing the CO emissions. EGR regulation was accomplished by monitoring the injection pump setting which was correlated to the fuel flow rate, the speed of the engine, the amount of EGR flow, and the ambient air temperature. Through these parameters, the mixture strength expressed as the equivalence ratio, ϕ, was calculated and related to the power output of the engine. Thus, a map of engine performance parameters was generated and related to measured NO and CO emissions. A series of road tests showed that EGR most effectively reduces NO emissions at high ϕ's (by a factor of two at 20% EGR) which, however, is accompanied by an increase in CO emissions by a factor of two, and a penalty in fuel economy by 8%. Benefits and losses can be optimized by automatically varying the level of EGR, using feedback from the aforementioned engine parameters. An algorithm was developed to govern the electrically controlled EGR valve and tests showed that the NO levels decreased by 30%, while the CO increased by 30%, showing no penalty in fuel economy. The resulting specific NO and CO emissions were well within the current US EPA standards.
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Larsen, C., Oey, F., and Levendis, Y., "An Optimization Study on the Control of NOx and Particulate Emissions from Diesel Engines," SAE Technical Paper 960473, 1996, https://doi.org/10.4271/960473.Also In
References
- Needham J.R. Doyle D.M. Nicol A.J. “The Low Nox Truck Engine.” SAE paper 910731 1991
- Uchida, N. Daisho, Y. Saito, T. Sugano, H. “Combined Effects of EGR and Supercharging on Diesel Combustion and Emissions.” SAE paper 930601 1993
- Bazari, Z. French, B.A. “Performance and Emissions Trade-Offs for a HSDI Diesel Engine - An Optimization Study.” SAE paper 930592 1993
- Lawrence, R.J. Evans, R.W. “The Ford 1.8L Four Cylinder Turbocharged Diesel Engine for Passenger Car Application.” SAE paper 901716 1990
- Yoshikawa, H. Umehara, T. Kurokawa, M. Sakagami, Y. Ikeda, T. “The EGR System for Diesel Engine Using a Low Voltage Soot Removal Device.” SAE paper 930369 1993
- Horrock R. W. “Light duty diesel-the emissions challenge.” Journal of Automobile Engineering 1992
- Zelenka, P. Krieger, W. Herzog, P.L. Cartellieri, W.P. “Ways Toward the Clean Heavy-Duty Diesel.” SAE paper 900602 1990
- Narusawa, K. Odaka, M. Koike, N. Tsukamoto, Y. Yoshida, K. “An EGR Control Method for Heavy-Duty Diesel Engines Under Transient Operations.” SAE paper 900444 1990
- Zheng, M. Reader, G.T. Galinsky, G. Potter, I.J. Gustatson, R.W. “Ignition Delay and Pressure-Time Characteristics in a Diesel Engine Using Carbon Dioxide and Argon Enriched Oxidants.” ASME paper 93-ICE-12 1993
- Akiyama K. Masunaga K. Kado K. Yoshioka T. “Cylinder Wear Mechanism in a EGR-Equipped Diesel Engine and Wear Protection by the Engine Oil.” SAE paper 872158 1987
- Nagaki, H. Korematsu, K. “Relation Between Diffusion Process of Sulfur Oxides in Exhaust Gas into Oil Film and Wear of Cylinder Liner and Piston Rings in Diesel Engines.” SAE paper 912400 1991
- Khalil N. Levendis Y. A. “Development of New Diesel Particulate Control System with Wall Flow Filter with Reversed Cleaning Regeneration.” SAE paper 920567 1992
- Levendis, Y.A. Panagiotou, T. Taslim, M.E. “Development of a Self-Cleaning Particle Trap for Diesel Engine Particulate Control.” SAE paper 900601 1990
- Levendis, Y.A. McInerney, K. Panagiotou, T. “Evaluation of a Self-Cleaning System for Diesel Engines.” SAE paper 910333 1991
- Pavlatos I. K. Levendis Y. A. “Recent Development on the N.U. Rotating Self Cleaning Particulate Trap - Retention of PAC's and HC Emissions” SAE paper 920568 1992
- Mehta S. Levendis Y. A. Khalil N. “On-Road Testing of a Reverse Air-Flow Cleaning, Soot-Oxidizing Diesel Particulate System.” SAE paper 930368 1993
- Mehta S. Oey, Φ. Sumbung, C. Li, C. Levendis Y. A. “An Aerodynamically Regenerated Diesel Particulate Trap with a Flow-Through Soot Incinerator Section.” SAE paper 940461 1994
- Oey Φ. Mehta S. Levendis Y.A. “Diesel Vehicle Application of an Aerodynamically Regenerated Trap and EGR System.” SAE paper 950370 1995
- Durnholz, M. Eifler G. Endres H. “Exhaust-Gas Recirculation - A Measure to Reduce Exhaust Emissions of DI Diesel Engines.” SAE paper 920725 1992
- Khalil N. Levendis Y.A. Abrams R.F. “Reducing Diesel Particulate and NOx Emissions via Filtration and Particle-Free Exhaust Gas Recirculation.” SAE paper 1995
- Herzog P.L. Burgler L. Winklhofer E. Zelenka P. Cartellieri W. “NOx Reduction Strategies for DI Diesel Engines.” SAE paper 920470 1992
- Narusawa, K. Odaka, M. Koike, N. Tsukamoto, Y. Yoshida, K. “An EGR Control Method for Heavy-Duty Diesel Engines Under Transient Operations.” SAE paper 900444 1990
- Lawrence, R.J. Evans, R.W. “The Ford 1.8L Four Cylinder Turbocharged Diesel Engine for Passenger Car Application.” SAE paper 901716 1990
- Pierpont D.A. Montgomery D.T. Reitz R.D. “Reducing Particulate and NOx Using Multiple Injections and EGR in a D.I. Diesel.” SAE paper 950217 1995
- Kohketsu S. Kazutoshi M Kato T. Sakai K. “Technology for Low Emission, Combustion Noise and Fuel Consumption on Diesel Engine.” SAE paper 940672 1994
- Havenith C. Needham J.R. Nicol A.J. Such C.H. “Low Emission Heavy Duty Diesel Engine for Europe” SAE paper 932959 1993
- Fleisch T. McCarthy C. Basu A. Udovich C. Charbonneau P. Slodowske W. Mikkelsen S. McCandless J. “A New Clean Diesel Technology: Demonstration of ULEV Emissions on a Navistar Diesel Engine Fueled with Dimethyl Ether.” SAE paper 950061 1995
- Ghojel J. Hilliard J. Levendis L “Effect of Oxygen Enrichment on the Performance and Emissions of I.D.I. Diesel Engines.” SAE paper 830245 1983
- Arcoumanis C. Bae C. Nagwaney A. Whitelaw J.H. “Effect of EGR on Combustion Development in a 1.9 L DI Diesel Optical Engine.” SAE paper 950850 1995
- Yu R.C. Shahed, S.M. “Effects of Ignition Timing and Exhaust Gas Recirculation on Emissions From a DI Diesel Engine.” SAE paper 811234 1981