Using an implicit transient FEA models of an intake engine valve, the dynamic stress/strain response of a valve closing (impact) on the valve seat was simulated. Key dynamic events during the closing process were identified and their corresponding physics accounted for in the model including: valve seat contact, valve tilt, rocker arm separation, material properties, shock wave and stem seal damping.Empirical tests were conducted to characterize the stem seal damping as a function of valve stem velocity. In addition, a simplified dynamics equation approach was developed. The results were successfully correlated to recorded strain gauge data.
Simulation of an Engine Valve Stress/Strain Response During a Closing Event
Sae Technical Papers
SAE 2003 World Congress & Exhibition ; 2003
2003-03-03
Aufsatz (Konferenz)
Englisch
Simulation of an engine valve stress/strain response during a closing event
Kraftfahrwesen | 2003
|SAGE Publications | 2014
|SAE Technical Papers | 2012
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