Computer-aided procedures for optimization of engine controls
by J.A. Tennant, A.I. Cohen, H.S. Rao, J.D. Powell
International Journal of Vehicle Design (IJVD), Vol. 4, No. 3, 1983

Abstract: A systematic procedure has been developed for establishing optimum engine performance, in terms of fuel economy and exhaust emissions constraints, as a function of spark advance, exhaust gas recirculation, and air-to-fuel ratio. The salient features of the procedure are: (a) it is based on mathematical engine models that have been validated over a driving cycle on an engine dynamometer, (b) it is based on solving a nonlinear programming problem with equality and inequality constraints, and (c) the results of the optimization are used to develop control calibrations that can be implemented on a vehicle. This paper describes the procedure to determine optimal calibrations for a fuel injected spark ignitition engine under warmed-up operating conditions.

Online publication date: Sun, 25-May-2014

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