Gasoline Direct Injection - A Promising Engine Concept for Future Demands

Paper #:
  • 2000-01-0248

Published:
  • 2000-03-06
Citation:
Eichlseder, H., Baumann, E., Müller, P., and Rubbert, S., "Gasoline Direct Injection - A Promising Engine Concept for Future Demands," SAE Technical Paper 2000-01-0248, 2000, https://doi.org/10.4271/2000-01-0248.
Pages:
11
Abstract:
This paper summarises the potential for the use of a gasoline direct injection engine for fuel economy benefits. Various engine technologies are compared for the greatest reduction in fuel consumption at the steady state point 2000rpm/2 bar. This is an important driving point in the EU cycle. The direct injection engine when used in an unthrottled lean stratified mode shows the greatest potential. Calculations show a fuel economy of a middle class vehicle can be increased by 12% using a DI over the EU cycle.The catalytic aftertreatment system is discussed and it is concluded that a close coupled pre-catalyst, a NOx trap and double injection are a good overall solution for the minimisation of exhaust gas emissions from a DI engine.
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