A nonlinear dynamic modelling of SI engines for controller design
by Paljoo Yoon, Myoungho Sunwoo
International Journal of Vehicle Design (IJVD), Vol. 26, No. 2/3, 2001

Abstract: A control-oriented nonlinear dynamic SI engine model is developed to represent a spark-ignited engine over a wide range of operating conditions. The model includes intake manifold dynamics, fuel film dynamics, and engine rotational dynamics with transport delays inherent in the four-stroke engine cycles. The model is mathematically compact enough to run in real time, and can be used as an embedded model within a control algorithm or an observer. The model is validated with engine-dynamometer experimental data in steady and transient operating conditions, and its accuracy over a wide operating range is proved to be within ±5% Also, the model can be used in the design and development of a powertrain controller.

Online publication date: Fri, 15-Aug-2003

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