Master Thesis: Sensitivity analysis valvetrain clearances on NVH of an I.C.Engine

  • Graz
  • Diplomarbeit, Dissertation
  • Einsteiger
  • 13.11.2017

AVL is the world's largest independent company for development of powertrains (combustion engines, hybrid systems, electric drive) as well as simulation and test systems for passenger cars, trucks and marine engines.

We offer a master thesis:

Sensitivity analysis valvetrain clearances on NVH of an I.C.Engine

The vehicles are getting quitter and quitter every year. Vlavetrain is one of the main NVH sources as mechanical source. However the engines as hardware has very different tolerances and clearances. This thesis wants to study the sensitivity analysis of the valvetrain parts. This will create a know how that what variance in radiated sound can be expected from


  • Literature study
  • Parametrization of the valve train model
  • Study the valvetrain multibody dynamic model
  • Forced response for NVH, and sensitivity analysis on NVH
  • Comparison of the cases and design for recommendations and guideline for simulation


  • Mechanical engineering, Technical physics


  • Experience in Dynamic and vibration
  • Language: English or German

Remuneration: The successful completion of the thesis is a one-time fee of EUR 2.500, - gross remuneration

MSc. Mehdi Mehrgou
Lead Engineer NVH Simulation
Tel.: +43 316 787 4313

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Hans-List-Platz 1
8020 Graz

Über uns

AVL ist das weltweit größte unabhängige Unternehmen für die Entwicklung, Simulation und Prüftechnik von Antriebssystemen (Hybrid, Verbrennungsmotoren, Getriebe, Elektromotoren, Batterien und Software) für PKW, LKW und Großmotoren. AVL ist in folgenden Unternehmensbereichen…

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