Abstract
AbstractThis paper investigates optimal strategies for minimising the conflicting objectives of fuel consumption and warm up duration following an engine cold start. Using a reduced order model, parametric solutions for the optimal air-fuel ratio, valve timing, cam timing and idle speed setpoint are sought in the presence of input constraints. The results are then validated using a dynamic programming approach on a high fidelity engine model, and compared experimentally with a production calibration for an inline 6-cylinder, SI gasoline engine. The methodology used can be readily extended to other mixed objective problems, and can be a useful tool in decreasing engine calibration time.
Published Version
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