Application of a physical model in engine control: compensation of wall wetting by fluid mechanics
by Luis Le Moyne, Xavier Moine
International Journal of Vehicle Design (IJVD), Vol. 22, No. 3/4, 1999

Abstract: Spark ignition port-injected engines for automobiles are submitted to frequent transients (acceleration and deceleration) during which air-fuel mixture concentrations can vary due to deposit of injected fuel on intake port and valves. It results in malfunction of catalyst and increased pollution and consumption. The ways to prevent or compensate the effects of such a deposit are explored, resulting in the development of a model taking into account multi-phase flow at the intake. Validation of modelling and applications are shown for the reduction of equivalence ratio excursions. New compensation strategies are also presented.

Online publication date: Mon, 18-Aug-2003

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