Browse > Article
http://dx.doi.org/10.7467/KSAE.2015.23.3.299

Characteristics of Transient Performance in a Turbocharged GDI Engine with TiAl Turbine  

Park, Chansoo (Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology)
Jung, Jinyoung (Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology)
Bae, Choongsik (Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology)
Publication Information
Transactions of the Korean Society of Automotive Engineers / v.23, no.3, 2015 , pp. 299-306 More about this Journal
Abstract
Turbocharged gasoline direct injection engine is one of promising technologies in the automotive industry. However, reduction in turbo-lag under transient operation is one of important challenging points to improve drivability. Engine transient performance was investigated in a 4-cylinder 2.0 L turbo-gasoline direct injection (T-GDI) engine using Inconel and TiAl (Titanium Aluminide alloy) turbine wheel turbochargers. The TiAl turbocharger performed superior transient boost pressure and torque rises under various engine transient operation conditions. These were mainly due to lower turbine rotational inertia of TiAl turbocharger. The Maximum boost pressure and torque build up were founded in 1500 rpm and 2000 rpm, instant load change from 20% to 100% of pedal position.
Keywords
Turbocharger; Inconel; TiAl; Transient performance; Boost pressure; Engine torque; Rotational inertia;
Citations & Related Records
연도 인용수 순위
  • Reference
1 D. Petitjean, L. Bernardini, C. Middlemass and S. Shahed, "Advanced Gasoline Engine Turbocharging Technology for Fuel Economy Improvements," SAE 2004-01-0988, 2004.
2 P. Whitaker, P. Kapus, M. Ogris and P. Hollerer, "Measures to Reduce Particulate Emissions from Gasoline DI Engines," SAE Int. J. Engines, Vol.4, No.1, pp.1498-1512, 2011.   DOI
3 W. Bandel, G. Fraidl, P. Kapus, H. Sikinger and C. N. Cowland, "The Turbocharged GDI Engine: Boosted Synergies for High Fuel Economy Plus Ultra-low Emission," SAE 2006-01-1266, 2006.
4 R. Aymanns, T. Uhlmann, C. Nebbia and T. Plum, "Electric Supercharging New Opportunities with Higher System Voltage," MTZ, Vol.75, No.7-8, pp.4-11, 2014.
5 J. Lotterman, V. Kares, D. Jeckel and P. D. Martino, "New Turbocharger Concept for Gasoline Engines," MTZ, Vol.73, No.6, pp.54-58, 2012.
6 J. Jung, H. Oh and C. Bae, "Charateristics of Turbocharger Equipped with TiAl Turbine Wheel in Downsizing GDI Engine," KSAE Annual Conference Proceedings, pp.34-40, 2013.
7 J. Taylor, N. Fraser and P. Wieske, "Water Cooled Exhaust Manifold and Full Load EGR Technology Applied to a Downsized Direct Injection Spark Ignition Engine," SAE Int. J. Engines, Vol.3, No.1, pp.225-240, 2010.   DOI
8 J. Andersen, E. Karlsson and A. Gawell, "Variable Turbine Geometry on SI Engines," SAE 2006-01-0020, 2006.
9 D. Luckmann, T. Uhlmann, H. Kindl and S. Pischinger, "Separation in Double Entry Housing at Boosted Gasoline Engines," MTZ, Vol.74, No.10, pp.4-9, 2013.
10 S. Park, T. Matsumoto and N. Oda, "Numerical Analysis of Turbocharger Response Delay Mechanism," SAE 2010-01-1226, 2010.
11 C. Park, J. Jung and C. Bae, "Characteristics of Transient Performance in a Turbocharged GDI Engine with TiAl Turbine," KSAE Annual Conference Proceedings, pp.83-84, 2014.