Study of Mechanism of Counter-rotating Turbine Increasing Two-Stage Turbine System Efficiency

Liu, Yanbin; Zhuge, Weilin; Zheng, Xinqian; Zhang, Yangjun; Zhang, Shuyong; Zhang, Junyue

doi:http://dx.doi.org/10.5293/IJFMS.2013.6.3.160

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자료유형: 학술저널

저자정보: Liu, Yanbin Zhuge, Weilin Zheng, Xinqian Zhang, Yangjun Zhang, Shuyong Zhang, Junyue

저널정보: 한국유체기계학회 International Journal of Fluid Machinery and Systems International Journal of Fluid Machinery and Systems Vol.6 No.3

발행연도: 2013.9

수록면: 160 - 169 (10page)

DOI: http://dx.doi.org/10.5293/IJFMS.2013.6.3.160

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Two-stage turbocharging is an important way to raise engine power density, to realize energy saving and emission reducing. At present, turbine matching of two-stage turbocharger is based on MAP of turbine. The matching method does not take the effect of turbines' interaction into consideration, assuming that flow at high pressure turbine outlet and low pressure turbine inlet is uniform. Actually, there is swirl flow at outlet of high pressure turbine, and the swirl flow will influence performance of low pressure turbine which influencing performance of engine further. Three-dimension models of turbines with two-stage turbocharger were built in this paper. Based on the turbine models, mechanism of swirl flow at high pressure turbine outlet influencing low pressure turbine performance was studied and a two-stage radial counter-rotation turbine system was raised. Mechanisms of the influence of counter-rotation turbine system acting on low-pressure turbine were studied using simulation method. The research result proved that in condition of small turbine flow rate corresponding to engine low-speed working condition, counter-rotation turbine system can effectively decrease the influence of swirl flow at high pressure turbine outlet imposing on low pressure turbine and increases efficiency of the low-pressure turbine, furthermore increases the low-speed performance of the engine.

#Interaction #Turbine efficiency #Radial counter-rotation turbine #Swirl flow #Three-dimension simulation #Two-stage turbocharger

참고문헌 (10)

참고문헌 신청

1. [인터넷자원] - Ricardo / / 2-Stage Turbocharger Matching for a Light Duty Diesel Engine

2. [학술대회논문] - Mathias Vogt / 2011 / Improving the Application of Turbine Maps in 1D Engine Process Modelling, GT2011-45 / Proceedings of ASME Turbo Expo 2011

3. [보고서] - Fredrik Westin / 2010 / Measurement of interstage losses of a two-stage turbocharger system in a turbocharger test rig

4. [학술대회논문] - Fredrik Hellstrom / 2008 / Effects of inlet conditions on the turbine performance of a radial turbine, GT2008-51088 / Proceedings of ASME Turbo Expo 2008

5. [학위논문] - Xie Lei / 2010 / The Study of Matching and Design for Two-Stage Turbocharged Internal Combustion Engine / 석사 / Department of automotive engineering, Tsinghua University