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Contrôle du phasage de la combustion dans un moteur HCCI par ajout d’ozone : Modélisation et Contrôle

Abstract : To pass the next legislator steps, one of the alternative solutions proposed for the depollution at the source by new concepts of combustion. One of proposed solution is the Homogeneous Charge Compression Ignition (HCCI) engine. The major challenge is to control combustion phasing during transitions. Ozone is promising additive to combustion. During this work, a 0D physical model is developed based on temperature fluctuations inside the combustion chamber by using Probability Density Function (PDF) approach. For this, an enthalpy variance model is developed to be used in Probability Density Function (PDF) of temperature. This model presents a good agreement with the experiments. It is used to develop HCCI engine map with and without ozone addition in order to evaluate the benefit of using ozone in extending the map in term of charge-speed. The second part deals with control the combustion phasing by ozone addition. A Control Oriented Model (COM) coupled with control laws demonstrates the possibility to control combustion phasing cycle-to-cycle. Thereafter, an experimental test bench is developed to prove this possibility. A real time data acquisition system is developed to capture combustion parameters (Pmax, CA50). By integrating control laws into Engine Control Unit (ECU), results demonstrate not only the controllability of combustion phasing cycle-to-cycle during transitions but also to stabilize it for an instable operating point.
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Submitted on : Thursday, March 14, 2019 - 2:20:17 PM
Last modification on : Tuesday, October 20, 2020 - 10:49:53 AM
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  • HAL Id : tel-02067895, version 1


Salim Sayssouk. Contrôle du phasage de la combustion dans un moteur HCCI par ajout d’ozone : Modélisation et Contrôle. Milieux fluides et réactifs. Université d'Orléans, 2017. Français. ⟨tel-02067895⟩



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