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MIMO control for automotive coldstart
Advances in Automotive Control, Volume # 5 | Part# 1
Authors
Sanketi, Pannag R.; Zavala, J. Carlos; Wilcutts, M.; Kaga, T.; Hedrick, J. K.
Identifier
10.3182/20070820-3-US-2918.00036
Index Terms
coldstart,model based control,MIMO sliding control
Abstract
The problem of controlling spark ignition engine emissions during the coldstart period is addressed by designing a model-based MIMO sliding mode controller. The task of the controller is to track a given set of desired profiles of engine-out hydrocarbon (HC) emissions and catalyst temperature using spark timing and fuel injection rate as the inputs. The throttle is not used as a control input. The models used for control design are presented in another paper submitted to the same conference. Different profiles of desired engine-out raw HC and catalyst temperatures are used to analyze the coldstart control problem. Simulation results illustrate the trade-off between low raw HC and fast catalyst ligh-off. It was found that the controller tracks the desired profiles as long as the inputs were not saturated. The controller presented here could be used as a tool to investigate the optimal input profiles. Experiments are being carried out to validate the simulations. Submitted to Fifth IFAC Symposium on Advances in Automotive Control.
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