Aspects of gasoline controlled auto ignition — development of a controller concept

Stapf, Karl Georg; Seebach, Dieter; Pischinger, Stefan; Hoffmann, Kai; Abel, Dirk

doi:10.1007/bf03226941

Cited by 2 publications

(3 citation statements)

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“…For this reason, besides the temperature, the homogeneity of the recirculated exhaust gas is a key influence on the CAI process [14]. Therefore, the thermodynamic state and the amount of recirculated exhaust have to be balanced.…”

Section: Research Enginementioning

confidence: 99%

“…After the event Intake Valve Open (IVO), the necessary amount of air is aspired. This strategy offers a hot charge and therefore can also initiate the auto-ignition towards lower loads [14]. IMEP, CA50, and dpmax are calculated from the pressure trace per cycle using a dSPACE MicroAutoBox programmed as a tailor-made ECU by the institute VKA at RWTH Aachen University.…”

Section: Research Enginementioning

confidence: 99%

“…As physical modeling is desirable but also a time consuming challenge, here a fast and reliable way to obtain a model is selected [17]. However, the use of a physically based model is highly desirable because by physical knowledge the generalization capabilities of the model can be improved as pointed out in [14]. Examples for a detailed physical engine model with elaborate chemistry which is derived from a more complex model and is suitable as a plant model for closed-loop simulations can be found in e.g.…”

Section: Multilayer Perceptron Networkmentioning

confidence: 99%

See 2 more Smart Citations

Constrained Nonlinear Predictive Control of Gasoline Low-Temperature Combustion

Hoffmann

Abel

2011

Oil Gas Sci. Technol. – Rev. IFP Energies nouvelles

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Résumé -Réglage d'une prédictive non-linéaire avec réalisation des limitations pour la combustion de l'essence à basse température -La combustion de l'essence avec une grande quantité de gaz d'échappement recirculés suscite de plus en plus d'intérêt. Dans de telles conditions de charge partielle, on peut atteindre une température maximale de combustion faible, ce qui donne moins d'émissions mais provoque des instabilités du processus et un comportement fortement non-linéaire. Ces propriétés rendent nécessaire une commande en boucle fermée pour le fonctionnement en transitoire, dont la synthèse constitue un véritable défi. Le papier présente une commande NMPC (prédictive non-linéaire basée sur modèle) innovante pour réguler la PME (Pression Moyenne Efficace) et le CA50 (angle du vilebrequin où 50 % de la masse de carburant est brûlée), tout en tenant compte des contraintes sur la dpmax (montée en pression maximale). La mise en oeuvre du régulateur est présentée dans un cadre de prototypage rapide de la commande (RCP) permettant à l'utilisateur de mettre en place, dans un court délai, un régulateur complexe pour le fonctionnement en transitoire. Le potentiel de l'approche est démontré par application sur le moteur réel. Rapid Control Prototyping (RCP) enabling the user to set up a complex controller for transient operation in a short time frame. The ability of the approach is proved by application to the real engine. Abstract -Constrained Nonlinear Predictive Control of Gasoline Low-Temperature CombustionCombustion of a gasoline fuel with a high amount of recirculated exhaust gas is increasingly gaining interest. Such in part load conditions, a low combustion peak temperature can be achieved, which yields lowest emissions but suffers from instabilities of the process and a highly nonlinear behavior. These properties make a closed-loop control a requirement for transient operation but also a challenge. The paper presents an innovative Nonlinear Model-based Predictive Controller (NMPC) for controlling the Indicated Mean Effective Pressure (IMEP) and Crank Angle of 50% burnt mass fraction (CA50) while accounting for constraints on the maximum pressure rise (dpmax). The implementation of the controller is presented in a framework for

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Section: Research Enginementioning

confidence: 99%

Section: Research Enginementioning

confidence: 99%