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Future Potential and Development Methods for High Output Turbocharged Direct Injected Gasoline Engines
Technical Paper
2006-01-0046
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
With rising gasoline prices in the US the need for increasingly fuel efficient powertrain concepts has never been more critical. Evaluation of the market on the other hand shows that the vehicle-buying consumer is unwilling to compromise engine power output for this needed fuel efficiency. Boosted, direct-injected gasoline engines with high specific output and low end torque seem to be the most logical path to satisfying both good part load fuel economy and generous power and torque characteristics.
Turbo lag and subsequent lack of torque during transient acceleration (with low initial engine speeds) are characteristics of current turbocharged gasoline engines. These phenomena have prevented successful penetration of these boosted powertrains into the marketplace. Larger displacement, naturally aspirated gasoline engines have been the preferred choice. The combination of turbocharging with direct-injection in a gasoline engine can significantly improve low end torque and transient behavior, potentially serving as the key to successful introduction of real downsized engine concepts into the US market.
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Citation
Kleeberg, H., Tomazic, D., Lang, O., and Habermann, K., "Future Potential and Development Methods for High Output Turbocharged Direct Injected Gasoline Engines," SAE Technical Paper 2006-01-0046, 2006, https://doi.org/10.4271/2006-01-0046.Also In
References
- Lang O. Geiger J. Habermann K. Wittler M. Boosting and Direct Injection - Synergies for Future Gasoline Engines SAE Paper 2005-01-1144
- Lang O. Habermann K. Wedowski S. Wittler M. Pischinger S. Optimization of the Transient Characteristics of Boosted SI Engines 12 2004