Robust surrogate formulation for gasoline fuels is challenging, especially in mimicking auto-ignition behavior observed under advanced combustion strategies including boosted spark-ignition and advanced compression ignition. This work experimentally quantifies the auto-ignition behavior of bi- and multi-component surrogates formulated to represent a mid-octane (Anti-Knock Index 91.5), full boiling-range, research grade gasoline (Fuels for Advanced Combustion Engines, FACE-F). A twin-piston rapid compression machine is used to achieve temperature and pressure conditions representative of in-cylinder engine operation. Changes in low- and intermediate-temperature behavior, including first-stage and main ignition times, are quantified for the surrogates and compared to the gasoline. This study identifies significant discrepancies in the first-stage ignition behavior, the influence of pressure for the bi- to ternary blends, and highlights that better agreement is achieved with multi-component surrogates, particularly at lower temperature regimes. A recently-updated detailed kinetic model for gasoline surrogates is also used to simulate the measurements. Sensitivity analysis is employed to interpret the kinetic pathways responsible for reactivity trends in each gasoline surrogate.
|Original language||English (US)|
|Number of pages||9|
|Journal||Proceedings of the Combustion Institute|
|State||Published - Jan 29 2019|
Bibliographical noteKAUST Repository Item: Exported on 2022-06-09
Acknowledgements: This manuscript has been created by UChicago Argonne, LLC, Operator of Argonne National Laboratory (“Argonne”), a U.S. Department of Energy Office of Science laboratory, under Contract No. DE-AC02-06CH11357. The work at LLNL was performed under Contract DE-AC52-07NA27344. The U.S. Government retains for itself, and others acting on its behalf, a paid-up nonexclusive, irrevocable worldwide license in said article to reproduce, prepare derivative works, distribute copies to the public, and perform publicly and display publicly, by or on behalf of the Government. The DOE will provide public access in accordance with http://energy.gov/downloads/doe-public-access-plan . This work is performed under the auspices of the Office of Energy Efficiency and Renewable Energy, Office of Vehicle Technology, Gurpreet Singh and Leo Breton program managers. S. Mani Sarathy (KAUST) provided the FACE-F gasoline.
This publication acknowledges KAUST support, but has no KAUST affiliated authors.
ASJC Scopus subject areas
- Chemical Engineering(all)
- Mechanical Engineering
- Physical and Theoretical Chemistry