Supervisory Control of Air-Fuel Ratio in Spark Ignition Engines

Denis Efimov 1, 2 Vladimir Nikiforov 3 Hossein Javaherian 4
1 NON-A - Non-Asymptotic estimation for online systems
Inria Lille - Nord Europe, CRIStAL - Centre de Recherche en Informatique, Signal et Automatique de Lille (CRIStAL) - UMR 9189
2 SyNeR - Systèmes Non Linéaires et à Retards
CRIStAL - Centre de Recherche en Informatique, Signal et Automatique de Lille (CRIStAL) - UMR 9189
Abstract : The problem of air-fuel ratio stabilization in spark ignition engines is addressed in this paper. The proposed strategy consists of proper switching among two control laws to improve quality of the closed-loop system. The first control law is based on an a priori off-line identified engine model and ensures robust and reliable stabilization of the system at large, while the second control law is adaptive, it provides on-line adaptive adjustment to the current fluctuations and improves accuracy of the closed-loop system. The supervisor realizes a switching rule between these control laws providing better performance of regulation. Results of implementation on two vehicles are reported and discussed.
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Denis Efimov, Vladimir Nikiforov, Hossein Javaherian. Supervisory Control of Air-Fuel Ratio in Spark Ignition Engines. Control Engineering Practice, Elsevier, 2014, 30 (9), pp.27--33. ⟨hal-00974225⟩

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