Title: Air intake modelling with fuzzy AFR control of a turbocharged diesel engine

Authors: Amir H. Shamdani, Amir H. Shamekhi, M. Ziabasharhagh

Addresses: Department of Mechanical Engineering, K.N. Toosi University of Technology, Tehran, Iran. ' Department of Mechanical Engineering, K.N. Toosi University of Technology, Tehran, Iran. ' Department of Mechanical Engineering, K.N. Toosi University of Technology, Tehran, Iran

Abstract: One of the most vital factors in combustion control is Air-to-Fuel Ratio (AFR) estimation and control. In this work a detailed mathematical, nonlinear and control oriented model of dynamic processes of turbocharged diesel engines is presented. This model has been developed using physical equations and also experimental data. Common Rail Injection (CRI) that is a flexible fuel injection system in which quantity, timing and pressure of injection are controllable separately is chosen for this purpose. AFR control is performed making use of fuzzy logic methodology with a fast fuzzy controller. All above-mentioned models are programmed in Matlab/Simulink software.

Keywords: AFR control; CRI; common rail injection; computer simulation; fuzzy logic; fuzzy control; intake systems; VGT; variable geometry turbocharger; air intake modelling; air-to-fuel ratio; turbocharged diesel engines; combustion control; flexible fuel injection.

DOI: 10.1504/IJVSMT.2008.020621

International Journal of Vehicle Systems Modelling and Testing, 2008 Vol.3 No.1/2, pp.114 - 138

Published online: 03 Oct 2008 *

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