Naslov
Numerical Simulation of Valve Train Dynamics

Autori
Dujmović, Luka ; Kozarac, Darko ; Lulić, Zoran

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Proceedings of the 10th EAEC European Automotive Congress / Duboka, Čedomir - Beograd : JUMV, 2005

Skup
EAEC European Automotive Congress (10 ; 2005)

Mjesto i datum
Beograd, Jugoslavija, 30.05.2005. - 01.06.2005

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
internal combustion engine; valve train modelling; valve spring resonance; frequency analysis

Sažetak
In this paper the dynamic behaviour of a single OHC valve train is investigated. A parametric mechanical model has been built and numerically solved for different camshaft speeds covering the operational range of the engine. The results of the simulation are graphically presented. The parameter values are chosen to represent an automotive high speed engine, giving the possibility of coil clash and valve float. Special attention is paid to spring resonance. In extreme cases, resonance can lead to severe oscillation that may cause poor engine performance as well as structural damage of valve train components. In order to investigate that important phenomenon, spectral analysis of the excitation and response is performed. The response spectra are interpreted and compared to expected results based on simple analytical considerations.

Izvorni jezik
Engleski

Znanstvena područja
Strojarstvo

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