Giorgetti, Nicolò and Bemporad, Alberto and Kolmanovsky, Ilya and Hrovat, Davor
*Explicit hybrid optimal control of direct injection stratified charge engines.*
In:
Symposium on Industrial Electronics.
IEEE, 20th-23th June 2005 , pp. 247-252.
ISBN 0-7803-8738-4
(2005)

## Abstract

This paper illustrates the application of hybrid modeling and receding horizon optimal control techniques to the problem of air-to-fuel ratio and torque management in advanced technology gasoline direct injection stratified charge (DISC) engines. A DISC engine represents an example of a constrained hybrid system, because it can operate in two discrete modes (stratified and homogeneous) and because the mode-dependent constraints on the air-to-fuel ratio and on the spark timing need to be enforced. The paper extends the prior work by the authors [1] and reports the development of an explicit controller which implements the optimal solution using piecewise affine functions of the state, thereby avoiding the need for on-line optimization. Strategies to simplify the explicit controller by reducing the number of regions in its characterization are discussed.

Item Type: | Book Section |
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Identification Number: | 10.1109/ISIE.2005.1528920 |

Uncontrolled Keywords: | Combustion; Control design; Cost function; Engine cylinders; Fuels; Logic; Optimal control; Sparks; Timing; Torque control |

Subjects: | Q Science > QA Mathematics T Technology > TL Motor vehicles. Aeronautics. Astronautics |

Research Area: | Computer Science and Applications |

Depositing User: | Professor Alberto Bemporad |

Date Deposited: | 27 Jul 2011 08:47 |

Last Modified: | 04 Aug 2011 07:29 |

URI: | http://eprints.imtlucca.it/id/eprint/522 |

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