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Understanding the Influences of Thermal and Mixture Inhomogeneities on the Auto-Ignition Process in a Controlled Auto-Ignition (CAI) Engine Using LES [PDF]
Oil & Gas Science and Technology, 2017 This work applies Large Eddy Simulation (LES) to the combustion process within a CAI engine. The chemical reaction is treated with a pre-tabulation approach based on homogeneous reactor simulations. At this juncture, a five-dimensional chemistry database
Yildar Esra +8 more
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Classical and quantum approaches to probabilistic modeling of fire occurrence in anthracite grade coal [PDF]
Scientific ReportsDespite having definite ignition points for a substance, auto ignition may be observed at different temperatures and energies. This paper presents a detailed quantitative analysis of anthracite coal ignition probability across various energy and ...
Aditya Kumar Thakur +3 more
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Energies, 2022 The auto-ignition caused by oblique shocks was investigated experimentally in a supersonic flow regime, with the incoming flow at a Mach number of 2.5.
Wenxiong Xi +4 more
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Forced turbulence affected auto-ignition and combustion modes under engine-relevant conditions
Applications in Energy and Combustion Science, 2020 Auto-ignition phenomena are paid more attention due to their close relation with abnormal combustions in advanced internal combustion engines. Previous investigations on intensive auto-ignition and knocking phenomena have been mainly conducted under ...
Jiaying Pan +5 more
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Applications in Energy and Combustion Science, 2023 Piston engines can be operated with very fuel-rich fuel/air mixtures to simultaneously produce syngas, power, and heat – so-called “polygeneration”. In this context, the effects of methoxymethane (dimethyl ether, DME), ethoxyethane (diethyl ether, DEE ...
Kai Banke +3 more
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On the Mechanism of Controlled Auto Ignition [PDF]
SAE Technical Paper Series, 2002 <div class="htmlview paragraph">Controlled auto ignition (CAI) is a form of combustion which uses an auto-ignited homogeneous air/fuel mixture but is controlled (or moderated) by regulating the quantity of internal exhaust gas residuals. In this paper, using a fully variable valve train and a newly developed exhaust valve control strategy, we ...
Don Law, Jeff Allen, Rui Chen
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Energies, 2020 Knocking is a destructive and abnormal combustion phenomenon that hinders modern spark ignition (SI) engine technologies. However, the in-depth mechanism of a single-factor influence on knocking has not been well studied.
Lei Zhou +3 more
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Energies, 2020 An aerosol shock tube has been developed for measuring the ignition delay times (tig) of aerosol mixtures of low-vapor-pressure fuels and for visualization of the auto-ignition flow-field.
Erwei Liu, Qin Liao, Shengli Xu
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Energies, 2022 The spark ignition (SI)-controlled auto-ignition (CAI) hybrid combustion is characterized by early flame propagation combustion and subsequent auto-ignition combustion.
Xinyan Wang, Hua Zhao
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Nihon Kikai Gakkai ronbunshu, 2017 This paper studies the condition of reducing knock intensity which is the pressure oscillation initiated by auto-ignition of the end gas. The knock intensity is thought to be decreased by suppressing the reaction rate of auto-ignition. In this study, the
Mitsuaki OHTOMO +3 more
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