Peter Ortner, Luigi del Re,
"Predictive Control of a Diesel Engine Air Path"
, in IEEE Transactions on Control Systems Technology, Vol. 15, Nummer 3, Seite(n) 449-456, 5-2007
Predictive Control of a Diesel Engine Air Path
Sprache des Titels:
This brief addresses the model-based control of the air
path of diesel engines in terms of an optimal control problem with
input constraints which can be solved using model predictive algorithms.
A multilinear model identified from data and a switched
controller design are used to cope with the nonlinearity of the engine.
Experimental results on a production engine confirm that the
proposed control method strongly improves the dynamics of the air
path and enormously reduces the parameterization work if compared
with the conventional approach. To obtain improvements in
emissions as well, the new controller approach cannot simply be
plugged in at the site of the conventional one, but new set points
must be determined. After such a redesign, improvements of 50%
in terms of nitrogen oxides and of 10% in terms of particulate
matter have been recorded without a net consumption increase, the
main price being the increased activity of the turbocharger vane
and especially of the exhaust gas recirculation valve.