Pre-ignition Behavior of Gasoline Blends in a Single- Cylinder Engine with Varying Boost Pressure and Compression Ratio

Kristian Rönn, Martti Larmi, Benjamin Pehlivanlar, Christoph Göbel, Stefan Pischinger, Anna Karvo, Kalle Lehto, Johannes Fryjan

Tutkimustuotos: LehtiartikkeliConference articleScientificvertaisarvioitu

Abstrakti

Pre-ignition in a boosted spark-ignition engine can be triggered by several mechanisms, including oil-fuel droplets, deposits, overheated engine components and gas-phase autoignition of the fuel-air mixture. A high pre-ignition resistance of the fuel used mitigates the risk of engine damage, since pre-ignition can evolve into super-knock. This paper presents the pre-ignition propensities of 11 RON 89-100+ gasoline fuel blends in a single-cylinder research engine. Albeit the addition of two high-octane components (methanol and reformate) to a toluene primary reference fuel improved the pre-ignition resistance, one high-RON fuel experienced runaway pre-ignition at relatively low boost pressure levels. A comparison of RON 96 blends showed that the fuel composition can affect pre-ignition resistance at constant RON.

AlkuperäiskieliEnglanti
JulkaisuSAE Technical Papers
DOI - pysyväislinkit
TilaJulkaistu - 29 syysk. 2023
OKM-julkaisutyyppiA4 Artikkeli konferenssijulkaisussa
TapahtumaJSAE/SAE Powertrains, Energy and Lubricants International Meeting - Hybrid, Kyoto, Japani
Kesto: 29 elok. 20231 syysk. 2023

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