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Control-Oriented Dynamic Models for In-Cylinder Conditions of Multi-Cylinder Diesel Engines

[+] Author Affiliations
Fengjun Yan, Junmin Wang

The Ohio State University, Columbus, OH

Paper No. DSCC2010-4044, pp. 671-678; 8 pages
doi:10.1115/DSCC2010-4044
From:
  • ASME 2010 Dynamic Systems and Control Conference
  • ASME 2010 Dynamic Systems and Control Conference, Volume 2
  • Cambridge, Massachusetts, USA, September 12–15, 2010
  • Conference Sponsors: Dynamic Systems and Control Division
  • ISBN: 978-0-7918-4418-2 | eISBN: 978-0-7918-3884-6
  • Copyright © 2010 by ASME

abstract

This paper presents control-oriented models, describing the dynamics of the in-cylinder conditions (ICCs) at intake valve closing (IVC), for multi-cylinder Diesel engines. Such models are based on multi-cylinder Diesel engines equipped with dual-loop exhaust gas recirculation (EGR) systems. As the thermodynamic boundary conditions for Diesel engine combustion, ICCs at IVC play critical roles for controlling combustion, particularly advanced combustion modes whose sensitivities to ICCs are very high. Grounded in physical principles, control-oriented ICC dynamic models were developed to describe the multi-cylinder characteristic and the coupling effects among the ICC quantities (i.e. in-cylinder gas mass, gas temperature, and oxygen fraction at IVC). The effectiveness of the developed control-oriented model was validated by comparing with a high-fidelity, 1-D computational, GT-Power engine model.

Copyright © 2010 by ASME

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