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An Approach for Modeling the Effects of Valve Lift Characteristics on Partial Load Operation in Diesel Engines

Maniatis, Panagiotis; Wagner, Uwe ORCID iD icon; Koch, Thomas


A manipulation of the charge exchange allows to control the amount of residual gas during
engine warm-up. The residual gas during the warm-up phase leads to an increase of the
exhaust gas temperature and supports to reach the exhaust aftertreatment system operating
temperature faster. In addition, the warm residual gas increases the combustion chamber
temperature, which reduces the HC and CO emissions. But in exchange fuel consumption
increases. For that reason, such heating measures should be the best compromise of both,
exhaust gas temperature increase and engine efficiency in order to provide efficient heating
strategies for passenger car diesel engines.
With the aim to determine efficient heating measures for passenger car diesel engines by a
valve train manipulation, simulative and experimental investigations are carried out as part of a
research project at the Institute of Internal Combustion Engines of the Karlsruhe Institute of
This work deals with the introduction of an approach to investigate the influences of variable
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Zugehörige Institution(en) am KIT Institut für Kolbenmaschinen (IFKM)
Publikationstyp Vortrag
Publikationsdatum 05.07.2018
Sprache Englisch
Identifikator KITopen-ID: 1000086902
Veranstaltung WKM Symposium 2018, Darmstadt, Germany, 4 - 5 Juli 2018
Schlagwörter DOE, 1-D Simulation, Variable Valve Timing, Exhaust 2nd Event
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