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Performance evaluation of an IC-engine with a novel partial admission turbocharger concept

Schatz, Markus; Seeger, Fabian; Vogt, Damian M.; Koch, Sergej; Notheis, Denis; Wagner, Uwe; Koch, Thomas

Abstract (englisch):
In 2015, a novel control concept for the partial admission of a turbocharger turbine
named MEDUSA (Multiple Exhaust Duct with Source Adjustment) was presented at
the Stuttgart International Symposium. The basic idea of this control concept is to divide
the turbine inlet into several sectors along the circumference and to control the
admission of the different sectors individually. This partial admission approach works
similar to a Variable Nozzle Turbine (VNT) control system and allows to increase the
turbine inlet pressure at low engine mass flows by closing turbine inlet segments and
thus restricting the effective flow area. As a consequence higher turbocharger power
output at low engine load conditions can be achieved. Contrary to a VNTturbocharger,
however, the presented control system can also be used at elevated exhaust
gas temperatures as featured by spark-ignition engines, because the admission
valves can be placed at the turbine periphery and cooled accordingly.

To date, only data obtained from the turbocharger test rig at the Institute of Thermal
Turbomachinery and Machinery Laboratory (ITSM) at the University of Stuttgart
have been published, showing that the MEDUSA-concept does indeed yield a higher
turbine pressure ratio and thus better turbocharger power output at low mass flows
compared to a standard Waste-Gate turbocharger. ... mehr



Originalveröffentlichung
DOI: 10.1007/978-3-658-25939-6_60
Zugehörige Institution(en) am KIT Institut für Kolbenmaschinen (IFKM)
Publikationstyp Proceedingsbeitrag
Jahr 2019
Sprache Englisch
Identifikator ISBN: 978-3-658-25939-6
ISSN: 2198-7432, 2198-7440
KITopen-ID: 1000097623
Erschienen in 19. Internationales Stuttgarter Symposium - Automobil- und Motorentechnik. Ed.: M. Bargende
Verlag Springer Vieweg, Wiesbaden
Seiten 757–771
Serie Proceedings
Vorab online veröffentlicht am 25.05.2019
Schlagworte MEDUSA concept, turbocharger concept
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