This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Steady-State, Transient and WLTC Drive-Cycle Experimental Performance Comparison between Single-Scroll and Twin-Scroll Turbocharger Turbine
Technical Paper
2019-01-0327
ISSN: 0148-7191, e-ISSN: 2688-3627
This content contains downloadable datasets
Annotation ability available
Sector:
Language:
English
Abstract
The use of twin-scroll turbocharger turbine in automotive powertrain has been known for providing better transient performance over conventional single-scroll turbine. This has been accredited to the preservation of exhaust flow energy in the twin-scroll volute. In the current study, the performance comparison between a single and twin-scroll turbine has been made experimentally on a 1.5L passenger car gasoline engine. The uniqueness of the current study is that nearly identical engine hardware has been used for both the single and twin-scroll turbine volutes. This includes the intake and exhaust manifold geometry, turbocharger compressor, turbine rotor and volute scroll A/R variation trend over circumferential location. On top of that, the steady-state engine performance with both the volutes, has also been tuned to have matching brake torque. Such highly comparable setup enabled a more precise evaluation on the effect of pulse-isolation in the twin-scroll turbine volute during transient process. The steady-state performance comparison shows the amplitude of exhaust pulse in the twin-scroll volute is substantially higher than in the single-scroll volute, hence confirming the preservation of pulse exhaust energy. As a result, twin-scroll volute is found to be able to accelerate the engine boost pressure at a faster rate, therefore results in better transient response. The ultimate advantage of the twin-scroll turbine is further exemplified via engine Worldwide harmonized Light vehicles Test Cycle (WLTC) testing, where approximately 2.7% of averaged reduction in fuel consumption has been recorded. Majority of this improvement has been contributed by low to medium speed driving condition.
Authors
- Meng Soon Chiong - Universiti Teknologi Malaysia
- Mohd Azman Abas - Universiti Teknologi Malaysia
- Feng Xian Tan - Universiti Teknologi Malaysia
- Srithar Rajoo - Universiti Teknologi Malaysia
- Ricardo Martinez-Botas - Imperial College London
- Yutaka Fujita - Mitsubishi Heavy Industries Ltd.
- Takao Yokoyama - Mitsubishi Heavy Industries Ltd.
- Seiichi Ibaraki - Mitsubishi Heavy Industries Ltd.
- Motoki Ebisu - Mitsubishi Heavy Industries Engine & Turbochargers
Topic
Citation
Chiong, M., Abas, M., Tan, F., Rajoo, S. et al., "Steady-State, Transient and WLTC Drive-Cycle Experimental Performance Comparison between Single-Scroll and Twin-Scroll Turbocharger Turbine," SAE Technical Paper 2019-01-0327, 2019, https://doi.org/10.4271/2019-01-0327.Data Sets - Support Documents
| Title | Description | Download |
|---|---|---|
| Unnamed Dataset 1 | ||
| Unnamed Dataset 2 | ||
| Unnamed Dataset 3 | ||
| Unnamed Dataset 4 |
Also In
References
- Raftery , T. Seven Reasons Why the Internal Combustion Engine Is a Dead Man Walking 2018 https://www.forbes.com/sites/sap/2018/09/06/seven-reasons-why-the-internal-combustion-engine-is-a-dead-man-walking-updated/#583b1e9a603f
- Pagot , A. , Duparchy , A. , Gautrot , X. , Leduc , P. et al. Combustion Approach for Downsizing: the IFP Concept Oil & Gas Science and Technology - Rev. IFP. 61 1 139 153 2006
- Grigoriadis , P. , Böttcher , L. , Binder , E. , and Sens , M. Advanced Boosting Technologies for Future SI Engine Concepts 11th International Conference on Turbochargers and Turbocharging 2014 10.1533/978081000342.41
- Pratte , D. Twin-Scroll Turbocharging: Still the New Hotness 2014 http://speed.academy/twin-scroll-turbocharging-still-the-new-hotness/
- Ebisu , M. , Terakawa , Y. , and Ibaraki , S. Mitsubishi Turbocharger for Lower Pollution Cars Mitsubishi Heavy Industries Technical Review 41 1 1 3 2004
- Walkingshaw , J. , Iosifidis , G. , Scheuermann , T. , Filsinger , D. et al. A Comparison of a Mono, Twin and Double Scroll Turbine for Automotive Applications Proceedings of ASME Turbo Expo 2015: Turbine Technical Conference and Exposition 2015
- Romagnoli , A. , Copeland , C. , Martinez-Botas , R.F. , Rajoo , S. et al. Comparison between the Steady Performance of Double-Entry and Twin-Entry Turbocharger Turbine Journal of Turbomachinery 135 011042-1 011042-1 2013
- Pischinger , F. and Wünsche , A. The Characteristic Behavior of Radial Turbines and Its Influence on Turbocharging Process Proceedings of the 1977 CIMAC Congress 1977
- Chiong , M.S. , Rajoo , S. , Romagnoli , A. , Costall , A.W. et al. One-Dimensional Pulse-Flow Modeling of a Twin-Scroll Turbine Energy 115 1291 1304 2016
- British Standards Institution 1981
- Szymko , S. , Martinez-Botas , R.F. , and Pullen , K.R. Experimental Evaluation of Turbocharger Turbine Performance under Pulsating Flow Conditions Proceedings of the ASME Turbo Expo 2005: Power for Land, Sea and Air 2005
- Rajoo , S. and Martinez-Botas , R.F. Variable Geometry Mixed Flow Turbine for Turbochargers: An Experimental Study International Journal of Fluid Machinery and Systems 1 1 155 168 2008
- Tutuianu , M. , Marotta , A. , Steven , H. , Ericsson , E. et al. 2013