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Advances in Fuzzy Systems
Volume 2009, Article ID 450259, 14 pages
Research Article

Fuzzy Modelling and Control of the Air System of a Diesel Engine

Department of Engineering, University of Ferrara, Via Saragat, 44100 Ferrara, Italy

Received 29 July 2009; Accepted 7 October 2009

Academic Editor: S. Paramasivam

Copyright © 2009 S. Simani and M. Bonfè. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


This paper proposes a fuzzy modelling approach oriented to the design of a fuzzy controller for regulating the fresh airflow of a real diesel engine. This strategy has been suggested for enhancing the regulator design that could represent an alternative to the standard embedded BOSCH controller, already implemented in the Engine Control Unit (ECU), without any change to the engine instrumentation. The air system controller project requires the knowledge of a dynamic model of the diesel engine, which is achieved by means of the suggested fuzzy modelling and identification scheme. On the other hand, the proposed fuzzy PI controller structure is straightforward and easy to implement with respect to different strategies proposed in literature. The results obtained with the designed fuzzy controller are compared to those of the traditional embedded BOSCH controller.