Minimization of the fuel consumption of a gasoline engine using dynamic optimization

B. Saerens, J. Vandersteen, T. Persoons, J. Swevers, M. Diehl and E. Van den Bulck

Applied Energy, 2009, vol. 86, issue 9, 1582-1588

Abstract: This paper discusses the minimization of the fuel consumption of a gasoline engine through dynamic optimization. The minimization uses a mean value model of the powertrain and vehicle. This model has two state variables: the pressure in the engine intake manifold and the engine speed. The control input is the throttle valve angle. The model is identified on a universal engine dynamometer. Optimal state and control trajectories are calculated using Bock's direct multiple shooting method, implemented in the software MUSCOD-II. The developed approach is illustrated both in simulation and experimentally for a generic test case where a vehicle accelerates from to in . The optimized trajectories yield minimal fuel consumption. The experiments show that a linear engine speed trajectory yields an extra fuel consumption of 13% when compared to the optimal trajectory. It is shown that, with a simple model, a significant amount of fuel can be saved without loss of the fun-to-drive.

Keywords: 45.80.+r; Optimal; control; Throttle; valve; control; Dynamic; optimization; Trajectory; optimization; Internal; combustion; engines; Fuel; economy (search for similar items in EconPapers)
Date: 2009
References: View complete reference list from CitEc
Citations: View citations in EconPapers (9)

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