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Next-Cycle and Same-Cycle Cylinder Pressure Based Control of Internal Combustion Engines

[+] Author Affiliations
Kristopher P. Quillen

Drivven, Inc., Fort Collins, CO

Matthew Viele

Drivven, Inc., Elizabeth, CO

Stephen A. Ciatti

Argonne National Lab, Argonne, IL

Paper No. ICEF2010-35119, pp. 635-645; 11 pages
doi:10.1115/ICEF2010-35119
From:
  • ASME 2010 Internal Combustion Engine Division Fall Technical Conference
  • ASME 2010 Internal Combustion Engine Division Fall Technical Conference
  • San Antonio, Texas, USA, September 12–15, 2010
  • Conference Sponsors: Internal Combustion Engine Division
  • ISBN: 978-0-7918-4944-6 | eISBN: 978-0-7918-3882-2
  • Copyright © 2010 by ASME

abstract

This paper reviews next-cycle and same-cycle control techniques developed by Drivven and implemented at Argonne National Laboratory on a General Motors 1.9L common rail diesel engine. Next-cycle control involves measuring cylinder pressure engine-synchronously, performing calculations, and using the complete result in the control algorithm for the fueling event in the next engine cycle. For this control method, injection timing was manipulated to maintain a specified 50% burn location and was investigated in both single-cylinder and multi-cylinder modes. The engine was tested in steady state with step changes in input parameters such as EGR rate. Similar to next-cycle control, same-cycle control involves measuring cylinder pressure engine-synchronously, performing calculations, and making fueling decisions based on partial results within the same engine cycle. For this control method, injection pulse spacing was manipulated to optimize secondary injections by a heat-release calculated angle-by-angle. Next-cycle and same-cycle control both have the capability of enhancing production engine control while next-cycle control also has great benefits as a calibration aid.

Copyright © 2010 by ASME

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