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Authors: Rolf Johansson ; Anders Widd and Per Tunestål

Affiliation: Lund University, Sweden

Keyword(s): Modeling, HCCI, Combustion Engine, Closed-loop Combustion Control.

Abstract: The Homogeneous Charge Compression Ignition (HCCI) principle holds promise to increase efficiency and to reduce emissions from internal combustion engines. As HCCI combustion lacks direct ignition timing control and auto-ignition depends on the operating condition, control of auto-ignition is necessary. Since auto-ignition of a homogeneous mixture is very sensitive to operating conditions, a fast combustion phasing control is necessary for reliable operation. To this purpose, HCCI modeling and model-based control with experimental validation were studied. A six-cylinder heavy-duty HCCI engine was controlled on a cycle-to-cycle basis in real time using a variety of sensors, actuators and control structures for control of the HCCI combustion in comparison. The controllers were based on linearizations of a previously presented physical, nonlinear, model of HCCI including cylinder wall temperature dynamics. The control signals were the inlet air temperature and the inlet valve closing. A system for fast thermal management was installed and controlled using mid-ranging control. The resulting control performance was experimentally evaluated in terms of response time and steady-state output variance. For a given operating point, a comparable decrease in steady-state output variance was obtained either by introducing a disturbance model or by changing linearization point. The robustness towards disturbances was investigated as well as the effects of varying the prediction and control horizons. Increasing the horizons had a very limited effect on the closed-loop performance while increasing the computational demands substantially. As shown in the paper, modeling constitutes a necessary element for embedded networked control design applied to HCCI combustion engine design. (More)

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Paper citation in several formats:
Johansson, R.; Widd, A. and Tunestål, P. (2009). Modeling and Model-based Control of Homogeneous Charge Compression Ignition (HCCI) Engine Dynamics. In Proceedings of the International Workshop on Networked embedded and control system technologies: European and Russian R&D cooperation (ICINCO 2009) - Workshop NESTER; ISBN 978-989-674-004-7, SciTePress, pages 31-44. DOI: 10.5220/0002275000310044

@conference{workshop nester09,
author={Rolf Johansson. and Anders Widd. and Per Tunestål.},
title={Modeling and Model-based Control of Homogeneous Charge Compression Ignition (HCCI) Engine Dynamics},
booktitle={Proceedings of the International Workshop on Networked embedded and control system technologies: European and Russian R&D cooperation (ICINCO 2009) - Workshop NESTER},
year={2009},
pages={31-44},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0002275000310044},
isbn={978-989-674-004-7},
}

TY - CONF

JO - Proceedings of the International Workshop on Networked embedded and control system technologies: European and Russian R&D cooperation (ICINCO 2009) - Workshop NESTER
TI - Modeling and Model-based Control of Homogeneous Charge Compression Ignition (HCCI) Engine Dynamics
SN - 978-989-674-004-7
AU - Johansson, R.
AU - Widd, A.
AU - Tunestål, P.
PY - 2009
SP - 31
EP - 44
DO - 10.5220/0002275000310044
PB - SciTePress