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Multi-physics modeling of the intake line of an internal combustion engine

Abstract : The competition among carmakers to introduce the most innovative solutions is growing day by day. Since few years, simulation is being used widely in automotive industries. Concerning the study of gas dynamics and pressure wave’s propagation in the intake system of an internal combustion engine, which have a significant effect on engine behavior, a precise modelling is needed in order to obtain good results. The main objective of the methodology presented in this PhD thesis, is to shorten the simulation time in order to study the behavior of an internal combustion engine, while conserving a good accuracy level. The pressure waves are studied using frequency approach. This latter is based on a transfer function, which links the relative pressure and the air mass flow rate upstream the intake valve. A multi-physics coupling model in the simulation code was established. The model validation was conducted using precision criterion on volumetric efficiency and on instantaneous pressure upstream of the intake valve. The results showed good accuracy level. In terms of computational time, the transfer function methodology is faster than the native one-dimensional non-linear code. This methodology can be an alternative method for modeling the intake geometry of an IC engine.
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Contributor : David Chalet <>
Submitted on : Wednesday, January 29, 2020 - 5:49:57 PM
Last modification on : Tuesday, February 11, 2020 - 2:15:12 PM


2019 Thèse Yassine.pdf
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  • HAL Id : tel-02460015, version 1



Mohamad Yassine. Multi-physics modeling of the intake line of an internal combustion engine. Engineering Sciences [physics]. Ecole Centrale de Nantes (ECN), 2019. English. ⟨tel-02460015⟩



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