Analyse und modellhafte Beschreibung der Belagsbildung in Abhangigkeit der Abgaszusammensetzung innerhalb der Motorkaltstartphase

By (author) Dominik Appel

Book cover: Analyse und modellhafte Beschreibung der Belagsbildung in Abhangigkeit der Abgaszusammensetzung innerhalb der Motorkaltstartphase

Extent: 146 pages

Publisher: Logos Verlag Berlin

Subjects: Earth & Life Sciences , Technical Sciences: Computer Science, Engineering, IT, & Math

Series: Forschungsberichte aus dem Institut für Kolbenmaschinen

Language: German

Paperback (Published)

(September 2021)

ISBN: 9783832553661

6.65 x 9.49 inches

Price: $91.00

In stock

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Zunehmende Emissionsrestriktionen sowie verscharfte Umweltrandbedingungen bei der Emissionsermittlung im praktischen Fahrbetrieb (RDE) konnen nicht mehr alleine durch rein motorstrategische Massnahmen erfullt werden. Die Sicherstellung der Funktionalitat von abgasfuhrenden Komponenten und Systemen unter allen Randbedingungen in Verbindung mit intelligenten Motorbetriebskonzepten ist demnach unabdingbar. Insbesondere systembedingte Kaltstartbedingungen im Kurzstreckenverkehr nehmen einen erheblichen Einfluss auf den Ablagerungs- und Verschmutzungsprozess von abgasfuhrenden Bauteiloberflachen sowie auf die Leistungseffizienz der Abgasnachbehandlungssysteme. Im Rahmen dynamischer Kaltstartuntersuchungen bei Betriebsbedingungen von 23 Grad Celsius bis -22 Grad Celsius auf Basis realistischer, dynamischer Fahrprofile im innerstadtischen Bereich lassen sich anhand eines neuartigen Probenahmeverfahrens wesentliche Einflussgrossen auf die otto- und dieselmotorische Belagsbildung auf abgasfuhrenden Bauteiloberflachen identifizieren, die eine Reduktion des Depositionsmechanismus auf seine bedeutsamen Wechselwirkungen ermoglicht. Daraus ableitend kann mit Hilfe einer modellhaften Beschreibung des komplexen Belagsbildungsprozesses ein verbessertes Verstandnis der Wechselbeziehung zwischen Fahrverhalten und Ablagerungen auf abgasfuhrenden Bauteiloberflachen erzielt werden.

  • By (author) Dominik Appel

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