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Journal Articles Control Engineering Practice Year : 2014

Supervisory Control of Air-Fuel Ratio in Spark Ignition Engines

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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Dates and versions

hal-00974225 , version 1 (05-04-2014)

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Denis Efimov, Vladimir Nikiforov, Hossein Javaherian. Supervisory Control of Air-Fuel Ratio in Spark Ignition Engines. Control Engineering Practice, 2014, 30 (9), pp.27--33. ⟨10.1016/j.conengprac.2014.04.002⟩. ⟨hal-00974225⟩
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