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Potential of Water Injection for Gasoline Engines by Means of a 3D-CFD Virtual Test Bench
ISBN-13:
9783658327552
Veröffentl:
2020
Seiten:
170
Autor:
Antonino Vacca
Serie:
Wissenschaftliche Reihe Fahrzeugtechnik Universität Stuttgart
eBook Typ:
PDF
eBook Format:
EPUB
Kopierschutz:
1 - PDF Watermark
Sprache:
Englisch
Beschreibung:
Water injection is one of the most promising technologies to improve the engine combustion efficiency, by mitigating knock occurrences and controlling exhaust gas temperature before turbine. As result, the engine can operate at stoichiometric conditions over the whole engine map, even during the more power-demanding RDE cycles. Antonino Vacca presents a methodology to study and optimize the effect of water injection for gasoline engines by investigating different engine layouts and injection strategies through the set-up of a 3D-CFD virtual test bench. He investigates indirect and direct water injection strategies to increase the engine knock limit and to reduce exhaust gas temperature for several operating points.
Influence of Water Vapour on Flame Speed and Auto-Ignition.- Optimization of the Water Injector Targeting.- Mixture Formation Induced by Water Injection.- Water Injection in Combination with Miller Cycle.
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