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Experimental Investigation of Variable Geometry Compressor for Highly Boosted Gasoline Engines
Technical Paper
2015-01-1289
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
A key technology for further improving the efficiency of gasoline engines lies in downsizing in combination with turbocharging. Decreasing the engine displacement greatly increases the demands on the turbocharging system. The charging of the engine with a single-stage turbocharger leads to a compromise to fulfill the requirements of the nominal power of the engine and the low-end torque. To avoid the use of complex two-stage boosting systems, it is necessary to increase the pressure ratio and the air flow rate at the same time. The wide speed and airflow range of gasoline engines intensify this trade-off. The use of a variable geometry turbine (VGT), additionally equipped with a wastegate bypass, offers great potential to meet the requirements on the turbine side. The range of stable operation of the compressor is limited by choke at high mass flow rates and surge at low mass flow rates. The variable geometry compressor (VGC) is one promising approach to extend the compressor map. A variable charging system consisting of VGC and VGT offers great potential to meet the future requirement for highly boosted engines.
The present paper shows experimental investigations of the potential of a variable geometry turbine with an additional wastegate on a small sized gasoline engine. To reach the torque and nominal power characteristic of a 2-stage boosted reference engine, the test engine is additionally equipped with a camshaft phasing system on the exhaust side. In addition two different variable geometry compressors are investigated.
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Herbst, F. and Eilts, P., "Experimental Investigation of Variable Geometry Compressor for Highly Boosted Gasoline Engines," SAE Technical Paper 2015-01-1289, 2015, https://doi.org/10.4271/2015-01-1289.Also In
References
- Kerkau; Der neue Sechszylinder-Biturbo-Motor mit variable Turbinengeometrie für den neuen Porsche 911 Turbo 27. Int. Wiener Motorensymposium 2006
- Middendorf; Der weltweit erste doppeltaufgeladene Otto-Direkt-Einspritzmotor von Volkwagen 14. Aachener Kolloquium Fahrzeug- und Motorentechnik 2005
- Sauerstein , Becker , Bullmer , Dabrowski Die geregelte zweistufige Abgasturboaufladung am Ottomotor - Ausle-gung, Regelung und Betriebsverhalten 31. Internationales Wiener Motorensymposium 2010
- Spinner , G. , Weiske , S. , Münz , S. BorgWarner's eBooster - the new generation of electric assisted boosting Aufladetechnische Konferenz Dresden 2013
- Kuhlbach , K. , Brinkmann , F. , Bartsch , G. , Weber , C. , Do. , G. , Jeckel , D. Parallel Sequentielle Doppelturbo-Aufladung ausgeführt am 1,6l DI Ottomotor Aufladetechnische Konferenz Dresden 2013
- Ishino , M. , Iwakiri , Y. , Bessho , A. , Uchida , H. Effects of variable inlet guide vanes on small centrifugal compressor performance ASME Paper Nr. 99-GT-157 1999
- Hagelstein , D. Experimentelle Untersuchungen an einer Radialverdichterstufe mit verschiedenen Vorleitgittern variable Geometrien Dissertation University of Hannover November 2001
- Schnorpfeil , S. , Pischinger , S. , Adomeit , P. , and Bowyer , S. Potentials of Variable Compressor Pre Swirl Devices in Consideration of Different Sealing Concepts SAE Technical Paper 2013-01-0934 2013 10.4271/2013-01-0934
- Fraser , N. , Fleischer , T. , Thornton , J. , and Rueckauf , J. Development of a Fully Variable Compressor Map Enhancer for Automotive Application SAE Technical Paper 2007-01-1558 2007 10.4271/2007-01-1558
- Nikpour , B. Turbocharger compressor flow range improvement for further heavy duty diesel engines Proceedings of Thiesel 2004 Conference, Thermo- and Fluid Dynamic Processes in Diesel Engines
- Mohtar , H. , Chesse , P. , Yammine , A. , and Hetet , J. Variable Inlet Guide Vanes in a Turbocharger Centrifugal Compressor: Local and Global Study SAE Technical Paper 2008-01-0301 2008 10.4271/2008-01-0301
- Uchida , H. , Kashimoto , A. , Iwakiri , Y Development of wide flow range compressor with variable inlet guide vanes R&D Review of Toyota CRDI 41 3 2006
- Whitfield , A. , Wallace , F. R. , Atkey , R. C. Experimental an theoretical performance of a radial flow turbocharger compressor with inlet prewhirl IMechE 189 1975
- Herbst , F. , Stöber-Schmidt , C. , Eilts , P. , Sextro , T. et al. The Potential of Variable Compressor Geometry for Highly Boosted Gasoline Engines SAE Technical Paper 2011-01-0376 2011 10.4271/2011-01-0376
- Grigoriadis , P. , Benz , A. , Müller , S. , Sens , M. Variable Trim Compressor - A new approach to variable compressor geometry 10th International Conference on Turbochargers and Turbocharging 2012
- Desantes , J. M. , Luján , J. M. , Plá , B. , Soleer , J. A. Potential of using a nozzle at compressor inlet of a high-speed direct-injection diesel engine Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering February 2011 225 178 189 10.1243/09544070JAUTO1429
- Seume , J. R. , kleine Sextro , T. The Potential of Variable Inlet Guide Vanes for Turbocharger Compressors 4 th International Congress on Advanced Downsizing & Turbocharging Concepts 26 28 March 2012 Stuttgart