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Basic investigations on the cause of initial pre-ignition in a constant volume combustion cell

Reimer, Jan ORCID iD icon 1; Zabihigivi, Mitra 1; Volz, Ina; Pfeil, Jürgen ORCID iD icon 1; Altenschmidt, Frank; Koch, Thomas 1
1 Institut für Kolbenmaschinen (IFKM), Karlsruher Institut für Technologie (KIT)

Abstract:

This paper investigates the effect of lubricant oil and the additives on low-speed pre-ignition (LSPI). The abnormal combustion phenomenon of LSPI is still an important issue in the development of modern internal ombustion engines. Despite numerous studies to understand the potential sources for low-speed pre-ignition, this phenomenon has not yet been fundamentally understood. Therefore, this paper provides a test procedure to investigate the necessary thermodynamic conditions leading to LSPI. A major goal of this study was to reduce the complexity in a gasoline engine arising from the interaction of diverse processes typically taking place in an engine. Therefore, the experiments were conducted by using a newly developed constant volume combustion chamber as
a centerpiece of a completely new testbed. Additionally, a device to generate a defined small amount of tempered oil droplets in the size range of microns into the combustion cell was designed and used for this study. This experimental approach focuses on lubricant oils as a potential trigger for pre-ignition. Therefore, three oils with different contents of Calcium and Magnesium were used to study ignition delay times and self-ignition temperatures of oil under various engine-like pressure conditions. ... mehr


Zugehörige Institution(en) am KIT Institut für Kolbenmaschinen (IFKM)
Publikationstyp Proceedingsbeitrag
Publikationsjahr 2022
Sprache Englisch
Identifikator ISBN: 978-3-8169-3544-5
KITopen-ID: 1000151032
Erschienen in International Conference on Ignition Systems for Gasoline Engines - International Conference on Knocking in Gasoline Engines. Ed.: M. Günther
Veranstaltung 5th International Conference on Ignition Systems for Gasoline Engines and 6th International Conference on Knocking in Gasoline Engines (2022), Berlin, Deutschland, 13.09.2022 – 14.09.2022
Verlag expert-Verlag
Seiten 25-40
Vorab online veröffentlicht am 13.09.2022
Schlagwörter pre-ignition
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