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Vibration Analysis for GDI Components Using Partial Coherence Function

Journal Article
2013-01-1702
ISSN: 1946-3995, e-ISSN: 1946-4002
Published April 08, 2013 by SAE International in United States
Vibration Analysis for GDI Components Using Partial Coherence Function
Sector:
Citation: Shin, K., Lee, S., Lee, D., Yoon, J. et al., "Vibration Analysis for GDI Components Using Partial Coherence Function," SAE Int. J. Passeng. Cars - Mech. Syst. 6(2):1070-1077, 2013, https://doi.org/10.4271/2013-01-1702.
Language: English

Abstract:

The contributions of vibration sources in a gasoline direct-injection (GDI) engine are identified by simulating a two input-one output model. A partial coherence function between two inputs and one output was calculated to identify the contributions of the two inputs to the output. In order to evaluate the proposed method, a principle test was performed using a laboratory test rig. The results show that the model can be used to identify the contribution of each input to the output. Finally, this model is applied to the identification of the vibration source in a GDI engine.