This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Boosting of Turbocharger Dynamics: Simulation and Comparison of Different Solutions
Technical Paper
2003-01-0399
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
Three alternatives for dynamic boosting of turbocharged SI-engines are compared by simulating their dynamic response. A dedicated simulation model was developed for the downsized engine with turbocharger of the “smart” two-seater. The studied concepts are: variable turbine geometry, an electrical precompressor (e-Booster) and compressed air at the compressor inlet (p-Booster). The turbine is modeled as nozzle flow, including the influence of rotor speed on flow rate and on torque. The compressor is modeled by a dimensionless characteristic of pressure versus flow coefficients, including the effects of surge and choking. Validation showed excellent agreement with dynamometer tests. Variable turbine geometry has the potential of excellent load response, provided that the high exhaust temperature can be handled without a loss of efficiency. For the e-Booster to be effective, it must have a faster response than the turbocharger itself. The p-Booster has the fastest response, however only during a short time duration. It also requires a large storage volume.
Recommended Content
Authors
Citation
Janach, W., Wenger, M., and Glattfelder, A., "Boosting of Turbocharger Dynamics: Simulation and Comparison of Different Solutions," SAE Technical Paper 2003-01-0399, 2003, https://doi.org/10.4271/2003-01-0399.Also In
References
- Heil, B. Karl, H. Karl, G. Panten, D. Wunderlich, K. ‘Verbrauch und Emissionen - Reduzierungskonzepte beim Ottomotor.’ Motortechnische Zeitschrift 62 11 900 915 2001
- Janach, W. Hüsler, I. Heini, K. ‘p-Booster und AGR/Lambda-Kombisteuerung für aufgeladenen Ottomotoren’ Motortechnische Zeitschrift 63 6 502 508 2002 MTZ Worldwide 63 6 25 27 2002
- Hohenberg, G. Harndorf, H. Kuhnt, H. 125 143 1991
- Ribi, B. Swiss Federal Institute of Technology Zürich 1996
- Isermann, R. Jost, O. Schwarte, A. 61 3 184 193 2001
- Beitz, W. Grote, K. Springer Berlin 2001