To overcome the tradeoff between and particulate emissions for future diesel vehicles and engines it is necessary to seek methods to lower pollutant emissions. The desired simultaneous improvement in fuel efficiency for future DI diesels is also a difficult challenge due to the combustion modifications that will be required to meet the exhaust emission mandates. This study demonstrates the emission reduction capability of EGR and other parameters on a high-speed direct-injection (HSDI) diesel engine equipped with a common rail injection system using an RSM optimization method. Engine testing was done at 1757 rev/min, 45% load. The variables used in the optimization process included injection pressure, boost pressure, injection timing, and EGR rate. RSM optimization led engine operating parameters to reach a low-temperature and premixed combustion regime called the MK combustion region, and resulted in simultaneous reductions in and particulate emissions without sacrificing fuel efficiency. It was shown that RSM optimization is an effective and powerful tool for realizing the full advantages of the combined effects of combustion control techniques by optimizing their parameters. It was also shown that through a close observation of optimization processes, a more thorough understanding of HSDI diesel combustion can be provided.
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April 2003
Technical Papers
Response Surface Method Optimization of a High-Speed Direct-Injection Diesel Engine Equipped With a Common Rail Injection System
T. Lee,
T. Lee
Engine Research Center, Department of Mechanical Engineering, University of Wisconsin-Madison, 1500 Engineering Drive, Madison, WI 53706
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R. D. Reitz
R. D. Reitz
Engine Research Center, Department of Mechanical Engineering, University of Wisconsin-Madison, 1500 Engineering Drive, Madison, WI 53706
Search for other works by this author on:
T. Lee
Engine Research Center, Department of Mechanical Engineering, University of Wisconsin-Madison, 1500 Engineering Drive, Madison, WI 53706
R. D. Reitz
Engine Research Center, Department of Mechanical Engineering, University of Wisconsin-Madison, 1500 Engineering Drive, Madison, WI 53706
Contributed by the Internal Combustion Engine Division of THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS for publication in the ASME JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER. Manuscript received by the ICE Division, November 2001; final revision received by the ASME Headquarters, April 2002. Editor: D. N. Assanis.
J. Eng. Gas Turbines Power. Apr 2003, 125(2): 541-546 (6 pages)
Published Online: April 29, 2003
Article history
Received:
November 1, 2001
Revised:
April 1, 2002
Online:
April 29, 2003
Citation
Lee , T., and Reitz, R. D. (April 29, 2003). "Response Surface Method Optimization of a High-Speed Direct-Injection Diesel Engine Equipped With a Common Rail Injection System ." ASME. J. Eng. Gas Turbines Power. April 2003; 125(2): 541–546. https://doi.org/10.1115/1.1559900
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