% IMPORTANT: The following is UTF-8 encoded. This means that in the presence % of non-ASCII characters, it will not work with BibTeX 0.99 or older. % Instead, you should use an up-to-date BibTeX implementation like “bibtex8” or % “biber”. @PHDTHESIS{Falke:958009, author = {Falke, Felix}, othercontributors = {Pischinger, Stefan and Wirsum, Manfred}, title = {{U}ntersuchung von {T}urbinen unter pulsierender {B}eaufschlagung}, school = {Rheinisch-Westfälische Technische Hochschule Aachen}, type = {Dissertation}, address = {Aachen}, publisher = {RWTH Aachen University}, reportid = {RWTH-2023-05065}, pages = {1 Online-Ressource : Illustrationen, Diagramme}, year = {2023}, note = {Veröffentlicht auf dem Publikationsserver der RWTH Aachen University; Dissertation, Rheinisch-Westfälische Technische Hochschule Aachen, 2023}, abstract = {In order to expand the testing possibilities of a hot gas test bench for mechanical tests on exhaust gas turbochargers under engine-realistic pulsation, the object of this work is to develop a pulsation unit which is installed between the steady-state combustion chamber and the turbocharger. The aim of the new development of the pulsation unit is to achieve sufficiently high pulsation coefficients Ψ for a wide range of internal combustion engines regardless of the number of cylinders. The validation of the pulsation unit is based on engine test bench experiments on the turbocharger of a 1.0 L three-cylinder engine. A load variation at n = 2000 min-1 from pme = 10 bar to pme = 20 bar shows that the pressure pulsations are reproduced with sufficient accuracy at all operating points. With Ψ = 1.19, the pulsation unit at the LET operating point deviates only marginally from the values of the three-cylinder engine (Ψ =1.21). Known concepts so far achieve values of Ψ < 0.7. The investigation of the wastegate flap movement with optical measurement technology was carried out with engine-realistic exhaust pulsation, the comparable mechanical excitation leads to a matching WG flap movement. It could be shown that the pulsation generator works reliably. The operational reliability of the design has been experimentally demonstrated for maximum exhaust gas temperatures of T = 700 °C.}, cin = {412310}, ddc = {620}, cid = {$I:(DE-82)412310_20140620$}, typ = {PUB:(DE-HGF)11}, doi = {10.18154/RWTH-2023-05065}, url = {https://publications.rwth-aachen.de/record/958009}, }