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A Robust Preignition Rating Methodology: Evaluating the Propensity to Establish Propagating Flames under Real Engine Conditions
Technical Paper
2017-01-2241
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
In this work, an experimental and analysis methodology was developed to evaluate the preignition propensity of fuels and engine operating conditions in an SI engine. A heated glow plug was introduced into the combustion chamber to induce early propagating flames. As the temperature of the glowplug varied, both the fraction of cycles experiencing these early flames and the phasing of this combustion in the engine cycle varied. A statistical methodology for assigning a single-value to this complex behavior was developed and found to have very good repeatability. The effects of engine operating conditions and fuels were evaluated using this methodology. While this study is not directly studying the so-called stochastic preignition or low-speed preignition problem, it studies one aspect of that problem in a very controlled manner.
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Yu, X., Costanzo, V., Chapman, E., and Davis, R., "A Robust Preignition Rating Methodology: Evaluating the Propensity to Establish Propagating Flames under Real Engine Conditions," SAE Technical Paper 2017-01-2241, 2017, https://doi.org/10.4271/2017-01-2241.Data Sets - Support Documents
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