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<p>The combustion anomaly of pre-ignition presents a particular challenge, especially in downsized engines. The interaction between the injected fuel and the oil-wetted cylinder wall plays a central role in the formation of reactive deposits, which are suspected of promoting pre-ignition. This paper investigates the influence of different tribological cylinder surfaces on this interaction. Plates with different surface properties are used and analysed using laser-induced fluorescence and optical measurements. The results will help to understand how surface properties influence the fuel-oil interaction and thus the probability of pre-ignition.</p>

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Influence of surfaces of different chemical composition and topology on the interaction between a fuel-spray and an oil-wetted wall

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年5月30日

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  • Celine Krnac,
  • Jan Reimer,
  • Malki Maliha,
  • Heiko Kubach,
  • Thomas Koch

摘要

The combustion anomaly of pre-ignition presents a particular challenge, especially in downsized engines. The interaction between the injected fuel and the oil-wetted cylinder wall plays a central role in the formation of reactive deposits, which are suspected of promoting pre-ignition. This paper investigates the influence of different tribological cylinder surfaces on this interaction. Plates with different surface properties are used and analysed using laser-induced fluorescence and optical measurements. The results will help to understand how surface properties influence the fuel-oil interaction and thus the probability of pre-ignition.