The Next Generation of Gasoline Turbo （下一代的汽油涡轮）.pdf

Dipl.- Ing. K-H. Bauer; C. Balis, M.S.E. G. Donkin, C.Eng; P. Davies, C.Eng Honeywell Transportation Systems The Next Generation of Gasoline Turbo Technology Die nächste Generation der Benzin-Turbotechnologie Abstract: The progress in downsizing of gasoline engines in recent years has demonstrated the lim- its of conventional turbocharger design when it comes to providing more low speed tor- que, transient response and partial load efficiency. The increased drive towards higher BMEP at very low engine speeds forces turbocharger engineers to rethink modern boost- ing layouts. Honeywell Turbo Technologies has taken a fresh look at the design of the gasoline turbo- charger and has redefined the aerodynamic layout of both the compressor and the turbine stages. It has been able to increase overall turbo efficiencies, especially at low speeds and in transient conditions and this combined with substantially reduced mechanical iner- tias has provided significant improvements in engine transient torque response. This presentation demonstrates a level of engine and vehicle performance that have never been achieved with conventional gasoline waste gate turbochargers. The concept demon- 33. Internationales Wiener Motorensymposium 2012 strates breakthroughs in transient engine performance without the use of exotic materials such as Titanium Aluminide or the additional complexity of variable geometry turbines. Kurzbeschreibung: Die in den letzten Jahren erzielten Fortschritte beim Downsizing von Benzinmotoren haben die Grenzen des konventionellen Turbolader-Designs aufgezeigt, wenn es darauf ankommt, mehr Drehmoment bei niedrigen Geschwindigkeiten sowie ein effizientes Einschwing- und Teillastverh