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Automotive Turbocharger Dynamic Modeling
Technical Paper
2008-36-0185
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
This work presents the dynamic modeling of an automotive turbocharger in a hot gas test stand. The objective is to develop a methodology to determine the main turbocharger dynamic properties as moment of inertia, response time, static gain constant, frequency gain amplitude and phase shift. The turbocharger used is the Master Power APL-240 set. The moment of inertia is obtained through the deceleration curve from an instantaneous fuel cut-off in the combustion chamber. The response time and static gain constant, as well the frequency gain amplitude and phase shift curves in function of a signal frequency, are obtained through a step variation. The turbocharger is modeled as a first order system. It is also presented a turbocharger sine excitation by the combustion chamber, generating a rotational speed sine signal output that simulates an engine intermittent acceleration. The rotational speed signal frequency gain and phase shift are compared to the values obtained in the step curves. The rotational speed frequency gain amplitude and phase shift modeled through the step test presents deviation of 16% and 13%, respectively, from the values from senoidal test.
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Citation
Barros, J. and Venson, G., "Automotive Turbocharger Dynamic Modeling," SAE Technical Paper 2008-36-0185, 2008, https://doi.org/10.4271/2008-36-0185.Also In
References
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- Ogata, K. 1997 “Engenharia de Controle Moderno” 3a Rio de Janeiro Pretince-Hall do Brasil 813
- Master Power, Borghetti Turbos e Sistemas Automotivos Ltda 2007 www.masterpower.com.br december 2007
- Venson, G. G. 2007 134