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Explicit hybrid optimal control of direct injection stratified charge engines

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)

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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
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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