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MTZ worldwide
Published in: MTZ worldwide 4/2013

01-04-2013 | Research

Mechanically Fully Variable Valvetrain and Cylinder Deactivation

Authors: Prof. Dr.-Ing. Rudolf Flierl, Dipl.-Ing. Frederic Lauer

Published in: MTZ worldwide | Issue 4/2013

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Excerpt

Engines with a mechanically fully variable valvetrain on inlet and exhaust side can easily be equipped with the functionality of cylinder deactivation. Hereby the fully variable valvetrain is used for valve shut-off on particular cylinders, while the full functionality of valve lift and valve duration variation on the other valves is maintained. The effectiveness of these measures is demonstrated at the University of Kaiserslautern using a four-cylinder downsizing gasoline engine with direct injection and monoscroll turbo charger. Additionally a strategy for mode transition between four- and two-cylinder mode is presented. …
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Literature
[1]
Paulov, M.: Analyse eines mechanisch vollvariablen Ventiltriebs an aufgeladenen Ottomotoren mit Saugrohr- und Direkteinspritzung. Kaiserslautern, University, Doctoral Thesis, 2012
[2]
Schmitt, S.: Potentiale durch Ventiltriebsvariabilität auf der Auslassseite am drosselfrei betriebenen Ottomotor mit einstufiger Turboaufladung. Kaiserslautern, University, Doctoral Thesis, 2011
[3]
Sandten, U.: Konzepte zur Zylinderabschaltung am Ottomotor. Aachen, University, Doctoral Thesis, 1984
[4]
Flierl, R.; Gollasch, D.; Knecht, A.; Pohl, D.; Hannibal, W.: Perspectives of the Fully Variable Valvetrain Univalve on the Basis of a 2.0 l Spark-Ignition Engine. In: MTZ 67 (2006), No. 7/8, pp. 560–567
Metadata
Title
Mechanically Fully Variable Valvetrain and Cylinder Deactivation
Authors
Prof. Dr.-Ing. Rudolf Flierl
Dipl.-Ing. Frederic Lauer
Publication date
01-04-2013
Publisher
Springer Fachmedien Wiesbaden
Published in
MTZ worldwide / Issue 4/2013
Electronic ISSN: 2192-9114
DOI
https://doi.org/10.1007/s38313-013-0042-3

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