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Fuel octane number measurement method based on high-frequency combustion pressure and its application to fuel octane number over 100

Author

Listed:
  • Lyu, Delin
  • Cui, Xuanjie
  • Qu, Yuanqing
  • Liu, Zhengyang
  • Liu, Xiangning
  • Huang, Zhen
  • Han, Dong

Abstract

Increasing the compression ratio in spark-ignition (SI) engines improves thermal efficiency but raises knock risk. Knock resistance is measured by Research Octane Number (RON) in Cooperative Fuel Research (CFR) engines under standard conditions, which differ from modern SI engines. The CFR engine's knock sensor, fitted with a low-pass filter, fails to accurately detect high-frequency knock oscillations, making conventional RON inadequate for assessing knock resistance in modern engines. To address this, the CFR engine was modified by replacing the knock sensor with a cylinder pressure sensor for direct combustion pressure measurement and upgrading the carburetor to electronic fuel injection. Under stoichiometric conditions, the Maximum Amplitude of Pressure Oscillation (MAPO) and Integral of Modulus of the Pressure Oscillation (IMPO) methods were applied to evaluate PRF blends with RONs of 88–100. Strong correlations were observed between the fuels RON and both IMPO and MAPO measurements, with coefficients of determination of 0.98 and 0.99, respectively. This study also analyzed error sources and quantified measurement inaccuracies in both methods, with IMPO showing lower absolute error of RON and variability. To verify the reliability of the IMPO and MAPO methods in evaluating high-octane fuels, particularly those with RON >100, these methods were applied to test TRFs and oxygenated fuel blends with RONs of 94–108. Results showed deviations from conventional measurements; however, for fuels with RON >100, both methods effectively distinguished fuel knock resistance capacity. Additionally, IMPO and MAPO captured the knock resistance improvements for the addition of ethanol and 2-MF in gasoline blends.

Suggested Citation

  • Lyu, Delin & Cui, Xuanjie & Qu, Yuanqing & Liu, Zhengyang & Liu, Xiangning & Huang, Zhen & Han, Dong, 2025. "Fuel octane number measurement method based on high-frequency combustion pressure and its application to fuel octane number over 100," Energy, Elsevier, vol. 335(C).
    • Handle: RePEc:eee:energy:v:335:y:2025:i:c:s0360544225038769
    DOI: 10.1016/j.energy.2025.138234
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    1. Shi, Cheng & Cheng, Tengfei & Duan, Ruiling & Nie, Fuquan & Yan, Xiaodong & Yang, Xiyu, 2025. "An insight into the effects of injection pressure and nozzle dimension on combustion characteristics and pollutant formation of ammonia/diesel dual-fuel engines," Energy, Elsevier, vol. 329(C).
    2. Park, Hyunwook & Lee, Junsun & Oh, Seungmook & Kim, Changup & Park, Yunsub & Yoo, Dockoon, 2025. "Strategies of hydrogen-air mixture formation for suppressing backfire, pre-ignition, and knock in full-load operations of hydrogen heavy-duty engines," Energy, Elsevier, vol. 326(C).
    3. Ji, Feifan & Meng, Shuo & Han, Zhiyu & Dong, Guangyu & Reitz, Rolf D., 2025. "Progress in knock combustion modeling of spark ignition engines," Applied Energy, Elsevier, vol. 378(PB).
    4. Li, Zhenhe & Khajepour, Amir & Song, Jinchun, 2019. "A comprehensive review of the key technologies for pure electric vehicles," Energy, Elsevier, vol. 182(C), pages 824-839.
    5. Tom Robeyn & Victor Sileghem & Tara Larsson & Sebastian Verhelst, 2024. "A Pressure-Oscillation-Based RON Estimation Method for Spark Ignition Fuels beyond RON 100," Energies, MDPI, vol. 17(6), pages 1-15, March.
    6. Wang, Yongjian & Long, Wuqiang & Dong, Pengbo & Tian, Hua & Wang, Yang & Xie, Chunyang & Tang, Yuanyou & Lu, Mingfei & Zhang, Weiqi, 2024. "Experimental investigation of knock control criterion considering power output loss for a PFI SI methanol marine engine," Energy, Elsevier, vol. 303(C).
    7. Kou, Chuanfu & Feng, Changling & Ning, Dezhong & Xiang, Chen & Tan, Yan & E, Jiaqiang, 2025. "Collaborative optimization design of intake and combustion chamber structures for heavy-duty natural gas engines under knock limitation," Energy, Elsevier, vol. 316(C).
    8. Lyu, Delin & Liu, Zhengyang & Cui, Xuanjie & Qu, Yuanqing & Zhu, Wei & Xu, Linxun & Xu, Suxian & Jiang, Xueli & Zhu, Zhehui & Han, Dong, 2025. "Oxidation of gasoline fuels with renewable oxygenated additives on a motored compression ignition engine," Energy, Elsevier, vol. 333(C).
    9. Sahoo, Sridhar & Srivastava, Dhananjay Kumar, 2021. "Effect of compression ratio on engine knock, performance, combustion and emission characteristics of a bi-fuel CNG engine," Energy, Elsevier, vol. 233(C).
    10. Kim, Hayeon & Choi, Hongseok & Ko, Ahyun & Lee, Hoseong, 2025. "Advanced thermal management of hybrid electric vehicles in cold climates using heat pump and waste heat recovery," Energy, Elsevier, vol. 335(C).
    11. Chen, Guisheng & Kong, Weilong & Zhu, Wenxia & Peng, Yiyuan & Li, Yaoping & Yang, Shun, 2024. "Study on the impacts of injection parameters on knocking in HPDI natural gas engine at different combustion modes," Energy, Elsevier, vol. 310(C).
    12. Liang, Yecai & Xing, Kongzhao & Huang, Haozhong & Ning, Dezhong & Wang, Yi & Wang, Xukai, 2025. "Investigation of knock combustion mechanism and injection angle optimization in a heavy-duty direct-injection hydrogen engine," Energy, Elsevier, vol. 335(C).
    13. Lei, Jian & Zhang, Shiqi & Bao, Jianhui & Xin, Gu & Yang, Xiyu & Shi, Cheng, 2025. "The low-carbon transition of rotary engines: Potential and challenges of alcohol fuels," Energy, Elsevier, vol. 320(C).
    14. Lounici, M.S. & Benbellil, M.A. & Loubar, K. & Niculescu, D.C. & Tazerout, M., 2017. "Knock characterization and development of a new knock indicator for dual-fuel engines," Energy, Elsevier, vol. 141(C), pages 2351-2361.
    15. Liu, Shang & Lin, Zhelong & Zhang, Hao & Lei, Nuo & Qi, Yunliang & Wang, Zhi, 2023. "Impact of ammonia addition on knock resistance and combustion performance in a gasoline engine with high compression ratio," Energy, Elsevier, vol. 262(PA).
    16. Wang, Yufeng & Gao, Jian & Gao, Jianbing & Wang, Xiaochen & Song, Jilong & Jiang, Shuo, 2025. "Investigation on strategies for reducing exhaust losses in opposed rotary piston engine and the impact of structure-induced internal EGR on engine performance," Energy, Elsevier, vol. 330(C).
    17. Meng, Xianglong & Xie, Fangxi & Liu, Yu & Lai, Kaichang & Jiang, Xiaoxiao & Jiang, Beiping & Zhao, Jinghua & Dou, Huili, 2025. "Effect of dilution strategies on the performance and knocking in a spark induced compression ignition (SICI) engine for isopropanol-butanol-ethanol (IBE) blends," Energy, Elsevier, vol. 319(C).
    18. Yue, Zongyu & Som, Sibendu, 2021. "Fuel property effects on knock propensity and thermal efficiency in a direct-injection spark-ignition engine," Applied Energy, Elsevier, vol. 281(C).
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