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

doi:10.4271/2023-32-0120

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

Research output: Contribution to journal › Conference article › Scientific › peer-review

Abstract

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.

Original language	English
Journal	SAE Technical Papers
DOIs	https://doi.org/10.4271/2023-32-0120
Publication status	Published - 29 Sept 2023
MoE publication type	A4 Conference publication
Event	JSAE/SAE Powertrains, Energy and Lubricants International Meeting - Hybrid, Kyoto, Japan Duration: 29 Aug 2023 → 1 Sept 2023

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10.4271/2023-32-0120

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

abstract = "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.",

author = "Kristian R{\"o}nn and Martti Larmi and Benjamin Pehlivanlar and Christoph G{\"o}bel and Stefan Pischinger and Anna Karvo and Kalle Lehto and Johannes Fryjan",

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T1 - Pre-ignition Behavior of Gasoline Blends in a Single- Cylinder Engine with Varying Boost Pressure and Compression Ratio

AU - Rönn, Kristian

AU - Larmi, Martti

AU - Pehlivanlar, Benjamin

AU - Göbel, Christoph

AU - Pischinger, Stefan

AU - Karvo, Anna

AU - Lehto, Kalle

AU - Fryjan, Johannes

PY - 2023/9/29

Y1 - 2023/9/29

N2 - 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.

AB - 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.

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U2 - 10.4271/2023-32-0120

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M3 - Conference article

AN - SCOPUS:85189758538

SN - 0148-7191

JO - SAE Technical Papers

JF - SAE Technical Papers

T2 - JSAE/SAE Powertrains, Energy and Lubricants International Meeting

Y2 - 29 August 2023 through 1 September 2023

ER -

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

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