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Influence of Atomization Quality on Mixture Formation, Combustion and Emissions in a MPI-Engine Under Cold-Start Conditions, Part II
Technical Paper
2002-01-2806
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
The intention of the study presented in this two part paper is to investigate the influence oalf primary mixture formation on engine running behavior, covering the areas of combustion and raw emissions. Two different concepts for primary fuel atomization were utilized and compared, the standard production injector and a flash boiling injector. The flash boiling injector is characterized by a significant reduction in droplet size and a partial direct vaporization during the injection process by preheating the fuel inside the injector. In this study special emphasis was laid on the transient process of engine start between typical cooling water temperatures of -7°C and 85°C. Various measurements and visualization techniques had been applied to investigate mixture preparation, deposition of liquid fuel on the walls, start of combustion, and in-cylinder as well as engine-out UHC emissions.
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Authors
- Jan Tribulowski - Institute for Reciprocating Engines, University of Karlsruhe
- Ulrich Spicher - Institute for Reciprocating Engines, University of Karlsruhe
- Boyke Richter - Institute for Thermal Turbomachinery, University of Karlsruhe
- Klaus Dullenkopf - Institute for Thermal Turbomachinery, University of Karlsruhe
- Sigmar Wittig - Institute for Thermal Turbomachinery, University of Karlsruhe
Topic
Citation
Tribulowski, J., Spicher, U., Richter, B., Dullenkopf, K. et al., "Influence of Atomization Quality on Mixture Formation, Combustion and Emissions in a MPI-Engine Under Cold-Start Conditions, Part II," SAE Technical Paper 2002-01-2806, 2002, https://doi.org/10.4271/2002-01-2806.Also In
References
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