Abstract: This paper investigates the modelling and the control of a turbocharged air system of
a gasoline engine. The purpose of the work described here is to propose a new control strategy
based on an original physical model of the system. This first part describes the development
of a simple model of the system. Based on a complete representation of the system, some
simplifications and assumptions are proposed in order to obtain a model with the adequate
level of complexity for an integration in a control law. We describe a model based innovative
control strategy. Experimental results are proposed on a 4 cylinder turbocharged gasoline engine.
Conclusions stress the possibility of taking into account the model of this system by a simple,
yet efficient in practice, control law.