Air-fuel-ratio control of engine system with unknown input observer


This paper presents an alternative control to maintain the air-fuel-ratio (AFR) of port-injected spark ignition (SI) engines at certain value, i.e. stoichiometric value, to improve the fuel economy. We first reformulate the AFR regulation problem as a tracking control for the injected fuel mass flow rate, which can simplify the control synthesis when the… (More)


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@article{Na2016AirfuelratioCO, title={Air-fuel-ratio control of engine system with unknown input observer}, author={Jing Na and Guido Herrmann and Clement Rames and Richard Burke and Chris Brace}, journal={2016 UKACC 11th International Conference on Control (CONTROL)}, year={2016}, pages={1-6} }