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Characterization of the Ignition and Early Flame Propagation of Pre-Chamber Ignition System in a High Pressure Combustion Cell

Wöbke, Marcus; Reinicke, Paul-Benjamin; Rieß, Michael; Römer, Lorenz von; Sens, Marc


The Pre-Chamber spark plug, already in its most simple configuration, allows a cycle
fuel consumption reduction of 2-3% (WLTC) by enabling a significant compression ratio
increase due to its huge knock mitigation effect. This benefit can be strongly extended
in the homogeneous lean burn operation mode with very low nitrogen oxide
emissions by a novel approach of injecting a well prepared fuel-air-mixture inside the
Pre-Chamber. An increase of the engine compression ratio allows further the development
of a new combustion process referred as the Pre-Chamber supported self-ignition
process, which enable an increased thermodynamic efficiency at part load operating
points of a gasoline engine.
The development of a suitable Pre-Chamber ignition system requires the technical understanding
of the Pre-Chamber geometry parameters on the combustion process.
The impact of the overflow channel design on the flame propagation and ignition of the
fuel-air mixture inside the main chamber must be understood in greater detail. This in
turn requires a high-fidelity combustion model which is capable of predicting the impact
of the overflow channel geometry on e.g. ... mehr

Verlagsausgabe §
DOI: 10.5445/IR/1000088608
Veröffentlicht am 08.06.2019
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Kolbenmaschinen (IFKM)
Publikationstyp Proceedingsbeitrag
Publikationsjahr 2018
Sprache Englisch
Identifikator ISBN: 978-3-8169-3449-3
KITopen-ID: 1000088608
Erschienen in Ignition Systems for Gasoline Engines : 4th International Conference, December 6 - 7, 2018, Berlin, Germany. Ed.: M. Günther
Verlag expert-Verlag
Seiten 385-423
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