Contributo in atti di convegno, 2011, ENG, 10.3182/20110828-6-IT-1002.02843

An MRAC approach for tracking and ripple attenuation of the common rail pressure for GDI engines

Umberto Montanaro; Alessandro di Gaeta; Veniero Giglio

Istituto Motori - CNR; Istituto Motori - CNR; Istituto Motori - CNR

Gasoline Direct Injection (GDI) spark ignition engines equipped with the Common Rail (CR) system strongly improve engine performance in terms of fuel consumption and pollutant emission reduction. As a drawback the fuel pressure in the rail has to be kept as constant as possible to the demanded pressure working set-points in order to achieve the advantages promised by this technology. In this work a Model Reference Adaptive Control (MRAC) algorithm based on the Minimal Control Synthesis (MCS) strategy is proposed to reduce the residual pressure in the rail. Numerical results based on a CR mean value model, previously proposed in the literature and experimentally validated, show that a very satisfactory attenuation of the pressure ripple as well as pressure tracking are attained in different working conditions. A quantitative comparison with a classical gain scheduling model-based control approach confirms furthermore the effectiveness of the proposed adaptive control strategy.

18th IFAC World Congress (IFAC2011), pp. 4173–4180, Milano, Italy, 28 August-2 September

Keywords

Adaptive control, Automotive control, Disturbance rejection, Common Rail, GDI

CNR authors

Montanaro Umberto, Giglio Veniero, Di Gaeta Alessandro

CNR institutes

IM – Istituto motori