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An Experimental and Numerical Study of an Advanced EGR Control System for Automotive Diesel Engine
ISSN: 1946-3936, e-ISSN: 1946-3944
Published April 14, 2008 by SAE International in United States
Citation: Millo, F., Pautasso, E., Pasero, P., Barbero, S. et al., "An Experimental and Numerical Study of an Advanced EGR Control System for Automotive Diesel Engine," SAE Int. J. Engines 1(1):188-197, 2009, https://doi.org/10.4271/2008-01-0208.
In this study, a new EGR control technique, based on the estimate of the oxygen concentration in the intake manifold, was firstly investigated through numerical simulation and then experimentally tested, both under steady state and transient conditions.
The robustness of the new control technique was also tested and compared with that of the conventional EGR control technique by means of both numerical simulation and experimental tests.
Substantial reductions of the NOx emissions under transient operating conditions were achieved, and useful knowledge for controlling the EGR flow rate more accurately was obtained.