This paper describes an accurate, flexible, and computationally efficient whole engine model incorporating a multizone, quasidimension combustion submodel for a 6.7-l six-cylinder turbocharged diesel engine with cooled exhaust gas recirculation (EGR), cooled air, and multiple fuel injections. The engine performance and emissions predicative capability of the model is demonstrated at 22 engine operating conditions. The only model inputs are physical engine control module “control actions,” including injection rates, injection timings, EGR valve position, and variable geometry turbocharger rack position. The model is run using both “open” and “closed” loop control strategies for air/EGR path control, in both cases achieving very good correlation with experimental data. Model outputs include in-cylinder pressure and heat release, torque, combustion timing, brake specific fuel consumption, EGR flow rate, air flow rate, exhaust and intake pressure, and emissions. The model predicts engine performance and emissions with average absolute errors within 5% and 18%, respectively, of true values with “open-loop” air/EGR control, and within 5% and 11% with “closed-loop” air/EGR control. In addition, accurate prediction of the coupling of the in-cylinder combustion and emission-production processes with the boosted, cooled air/EGR gas dynamics is a key characteristic of the model.
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e-mail: gshaver@purdue.edu
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February 2010
Research Papers
Computationally Efficient Whole-Engine Model of a Cummins 2007 Turbocharged Diesel Engine
Gregory M. Shaver,
Gregory M. Shaver
Assistant Professor
School of Mechanical Engineering,
e-mail: gshaver@purdue.edu
Purdue University
, West Lafayette, IN 47909
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Donald W. Stanton
Donald W. Stanton
Search for other works by this author on:
Gregory M. Shaver
Assistant Professor
School of Mechanical Engineering,
Purdue University
, West Lafayette, IN 47909e-mail: gshaver@purdue.edu
Sriram S. Popuri
Tim R. Frazier
Donald W. Stanton
J. Eng. Gas Turbines Power. Feb 2010, 132(2): 022803 (9 pages)
Published Online: November 2, 2009
Article history
Received:
September 12, 2008
Revised:
January 1, 2009
Online:
November 2, 2009
Published:
November 2, 2009
Citation
Kulkarni, A. M., Shaver, G. M., Popuri, S. S., Frazier, T. R., and Stanton, D. W. (November 2, 2009). "Computationally Efficient Whole-Engine Model of a Cummins 2007 Turbocharged Diesel Engine." ASME. J. Eng. Gas Turbines Power. February 2010; 132(2): 022803. https://doi.org/10.1115/1.3125316
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