The second methodology of controller design was based on Dynamic Programming. The problem of minimization of hydrocarbon emissions was set up in such a way that optimality could be analyzed with different time horizons. The results allowed to explain more clearly the tradeoff of the coldstart problem. The resulting optimal control strategy can be used to define tracking profiles in the Dynamic Surface Controller developed previously. An approximation of the optimal control problem was also formulated. Multiparametric optimization techniques were used to outline an explicit control law for the problem.This chapter relates the work of finding the parameters to fit experimental data to the model. ... The Toyota test cell facility consists of a spark ignition, multiport fuel injection, Toyota Camry engine (2.4 L, 4-cylinder, DOHC 16 valve) with variable valve timing (VVT) and intake ... The engine is coupled to an Eddy current dynamometer through a clutch and a 5-speed manual transmission. ... The engine can be cooled quickly by means of a cooling pump separated from the main drive belt.
|Title||:||Engine Modeling and Control for Minimization of Hydrocarbon Coldstart Emissions in SI Engine|
|Publisher||:||ProQuest - 2007|