Complex Air Path Management Systems and Necessary Controller Structures for Future High Dynamic Requirements

Adolph, Dirk; Schnorbus, Thorsten; Körfer, Thomas; Hild, O; Ruhkamp, Ludger; Lamping, Matthias; Lincks, Michael; Linssen, René

doi:10.4271/2009-01-1616

Cited by 2 publications

(3 citation statements)

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“…Although gas pressure, air mass flow and concentration sensors are widespread, observers and system models are widely used, and sometimes used as feedback quantities, [77]. In fact, one of the main difficulties resides in selecting the cost-effective sensor combination for controlling the system, while satisfying the robustness requirements [78]. In this sense, it must be considered that slight cylinder-to-cylinder dispersions that were no critical in conventional CI engines, may become a major problem when LTC is considered.…”

Section: Air-path Controlmentioning

confidence: 99%

A Challenging Future for the IC Engine: New Technologies and the Control Role

Payri

Lujan

Guardiola

et al. 2014

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

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-New regulations on pollutants and, specially, on CO 2 emissions could restrict the use of the internal combustion engine in automotive applications. This paper presents a review of different technologies under development for meeting such regulations, ranging from new combustion concepts to advanced boosting methods and after-treatment systems. Many of them need an accurate control of the operating conditions and, in many cases, they impose demanding requirements at a system integration level. In this framework, engine control disciplines will be key for the implementation and development of the next generation engines, taking profit of recent advancements in models, methods and sensors. According to authors' opinion, the internal combustion engine will still be the dominant technology in automotive applications for the next decades.Re´sume´-Un challenge pour le futur du moteur a`combustion interne : nouvelles technologies et roˆle du controˆle moteur -Les nouvelles normes sur les e´missions, en particulier le CO 2 , pourraient re´duire l'utilisation du moteur a`combustion interne pour les ve´hicules. Cet article pre´sente une revue de diffe´rentes technologies en cours de de´veloppement afin de respecter ces normes, depuis de nouveaux concepts de combustion jusqu'a`des syste`mes avance´s de suralimentation ou de post-traitement. La plupart de ces technologies demande un controˆle pre´cis des conditions de fonctionnement et impose souvent de fortes contraintes lors de l'inte´gration des syste`mes. Dans ce contexte et en profitant des dernie`res avance´es dans les mode`les, les me´thodes et les capteurs, le controˆle moteur jouera un roˆle clef dans la mise en oeuvre et le de´veloppement de la prochaine ge´ne´ration de moteurs. De l'avis des auteurs, le moteur ac ombustion interne restera la technologie dominante pour les ve´hicules des prochaines de´cennies.

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Section: Air-path Controlmentioning

confidence: 99%

A Challenging Future for the IC Engine: New Technologies and the Control Role

Payri

Lujan

Guardiola

et al. 2014

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

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“…Hence, concentration [2,3] as control ensors that monitor these controlled variables as feedback controllers. Instead, a concentration from state quantities of engine accuracy of the sensor improve the accuracy dy state.…”

Section: Diesel Engine S 21 Overviewmentioning

confidence: 99%

“…The system is designed to reduce the production of NO X by lowering both the temperature of the combustion gas in the chamber and the amount of O 2 in the intake air. This can be accomplished by increasing the gases with a high specific heat capacity, such as CO 2 and H 2 O, in the intake air. The flow rate of the recirculated exhaust gas (EGR gas) determines the amount of NO X produced.…”

Section: Introductionmentioning

confidence: 99%

A New Approach for NOx Soft Sensors for the Aftertreatment of Diesel Engines

Ishizuka

Kajiwara

Sato

et al. 2016

J. Phys.: Conf. Ser.

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Abstract. To maintain the NO X concentration at an appropriate level, traditionally an air-path control that regulates the intake and exhaust system of diesel engines aims to control the mass air flow and the manifold absolute pressure, which influence the production of NO X . To improve the control accuracy, a more recent approach takes the NO X concentration directly as a controlled output variable, but the sensors monitoring the NO X concentration are slow to respond. Consequently, a direct sensor is inappropriate as a feedback controller. Instead a mechanism called a soft sensor, which computes the NO X concentration from state quantities of diesel engines, is used. Because the prediction accuracy from the sensor model greatly affects the control performance, it is important to improve the model accuracy. However, deviations in the steady state indicate an insufficient model accuracy. This study proposes a method to construct an adaptive NO X soft sensor that corrects the parameters of the sensor model sequentially using the simultaneous perturbation stochastic approximation while comparing the values computed by the software to actual measurements as well as examines the effectiveness of the proposed method experimentally.

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Complex Air Path Management Systems and Necessary Controller Structures for Future High Dynamic Requirements

Cited by 2 publications

References 0 publications

A Challenging Future for the IC Engine: New Technologies and the Control Role

A Challenging Future for the IC Engine: New Technologies and the Control Role

A New Approach for NOx Soft Sensors for the Aftertreatment of Diesel Engines

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