Diesel engines are critical in fulfilling transportation and mechanical/electrical power generation needs throughout the world. The engine’s combustion by-products spawn health and environmental concerns, so there is a responsibility to develop emission reduction strategies. However, difficulties arise since the minimization of one pollutant often bears undesirable side effects. Although legislated standards have promoted successful emission reduction strategies for larger engines, developments in smaller displacement engines has not progressed in a similar fashion. In this paper, a reduced-order dynamic model is presented and experimentally validated to demonstrate the use of cooled exhaust gas recirculation (EGR) to alleviate the tradeoff between oxides of nitrogen reduction and performance preservation in a small displacement diesel engine. EGR is an effective method for internal combustion engine oxides of nitrogen reduction, but its thermal throttling diminishes power efficiency. The capacity to cool exhaust gases prior to merging with intake air may achieve the desired pollutant effect while minimizing engine performance losses. Representative numerical results were validated with experimental data for a variety of speed, load, and EGR testing scenarios using a three-cylinder diesel engine equipped with cooled EGR. Simulation and experimental results showed a 16% drop in emissions using EGR, but experienced a 7% loss in engine torque. However, the use of cooled EGR realized a 23% reduction while maintaining a smaller performance compromise. The concurrence between simulated and experimental trends establishes the simplified model as a predictive tool for diesel engine performance and emission studies. Further, the presented model may be considered in future control algorithms to optimize engine performance and thermal and emission characteristics.
Skip Nav Destination
e-mail: jwagner@clemson.edu
Article navigation
March 2008
Research Papers
Effects of Cooled EGR on a Small Displacement Diesel Engine: A Reduced-Order Dynamic Model and Experimental Study
Christopher Simoson,
Christopher Simoson
General Electric Transportation
, Erie, PA 16531
Christopher J. Simoson received his BS degree in Physics from Kings College in Bristol, TN in 2003. He completed his MS degree in Mechanical Engineering from Clemson University with a specialization in the modeling and control of mechatronic and automotive systems in 2006.
Search for other works by this author on:
John Wagner, Ph.D. PE
John Wagner, Ph.D. PE
Automotive Research Laboratory, Department of Mechanical Engineering,
e-mail: jwagner@clemson.edu
Clemson University
, Clemson, SC 29634
John R. Wagner received his BS and MS degrees in Mechanical Engineering from the State University of New York at Buffalo in 1983 and 1985, respectively. He received a Ph.D. degree in Mechanical Engineering from Purdue University in 1989. Dr. Wagner worked for Delco Electronics and Delphi Automotive Systems from 1989 to 1998. In August 1998, he joined the Department of Mechanical Engineering at Clemson University where he is currently an Associate Professor. Dr. Wagner’s research interests include nonlinear control theory, behavioral modeling, diagnostic and prognostic strategies, and mechatronic system design with application to transportation systems. He has established the multidisciplinary Automotive Research Laboratory and started the Rockwell Automation Mechatronics Educational Laboratory.
Search for other works by this author on:
Christopher Simoson
Christopher J. Simoson received his BS degree in Physics from Kings College in Bristol, TN in 2003. He completed his MS degree in Mechanical Engineering from Clemson University with a specialization in the modeling and control of mechatronic and automotive systems in 2006.
General Electric Transportation
, Erie, PA 16531
John Wagner, Ph.D. PE
John R. Wagner received his BS and MS degrees in Mechanical Engineering from the State University of New York at Buffalo in 1983 and 1985, respectively. He received a Ph.D. degree in Mechanical Engineering from Purdue University in 1989. Dr. Wagner worked for Delco Electronics and Delphi Automotive Systems from 1989 to 1998. In August 1998, he joined the Department of Mechanical Engineering at Clemson University where he is currently an Associate Professor. Dr. Wagner’s research interests include nonlinear control theory, behavioral modeling, diagnostic and prognostic strategies, and mechatronic system design with application to transportation systems. He has established the multidisciplinary Automotive Research Laboratory and started the Rockwell Automation Mechatronics Educational Laboratory.
Automotive Research Laboratory, Department of Mechanical Engineering,
Clemson University
, Clemson, SC 29634e-mail: jwagner@clemson.edu
J. Energy Resour. Technol. Mar 2008, 130(1): 011102 (11 pages)
Published Online: February 4, 2008
Article history
Received:
November 15, 2006
Revised:
July 31, 2007
Published:
February 4, 2008
Citation
Simoson, C., and Wagner, J. (February 4, 2008). "Effects of Cooled EGR on a Small Displacement Diesel Engine: A Reduced-Order Dynamic Model and Experimental Study." ASME. J. Energy Resour. Technol. March 2008; 130(1): 011102. https://doi.org/10.1115/1.2824286
Download citation file:
Get Email Alerts
Cited By
Stage-wise kinetic analysis of ammonia addition effects on two-stage ignition in dimethyl ether
J. Energy Resour. Technol
Related Articles
Computationally Efficient Whole-Engine Model of a Cummins 2007 Turbocharged Diesel Engine
J. Eng. Gas Turbines Power (February,2010)
PCCI Control Authority of a Modern Diesel Engine Outfitted With Flexible Intake Valve Actuation
J. Dyn. Sys., Meas., Control (September,2010)
Mean Value Modeling and Analysis of HCCI Diesel Engines With External Mixture Formation
J. Dyn. Sys., Meas., Control (January,2009)
Cycle-Controlled Water Injection for Steady-State and Transient Emissions Reduction From a Heavy-Duty Diesel Engine
J. Eng. Gas Turbines Power (May,2008)
Related Proceedings Papers
Related Chapters
Outlook
Closed-Cycle Gas Turbines: Operating Experience and Future Potential
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)
Lay-Up and Start-Up Practices
Consensus on Operating Practices for Control of Water and Steam Chemistry in Combined Cycle and Cogeneration