Results 21 to 30 of about 10,186 (228)
Mechanical Engineering Journal, 2022 It is generally known that the temperature and mixture concentration in the combustion chamber influence knock intensity. It is assumed that the distribution of temperature and mixture concentration in the end-gas region of a two-stroke engine differs ...
Sota NAKAMURA +5 more
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An elementary model for autoignition of laminar jets [PDF]
Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2015 In this paper, we formulate and analyse an elementary model for autoignition of cylindrical laminar jets of fuel injected into an oxidizing ambient at rest. This study is motivated by renewed interest in analysis of hydrothermal flames for which such configuration is common.
Gordon, Peter V. +5 more
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Autoignitions and detonations in engines and ducts [PDF]
Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2012 The origins of autoignition at hot spots are analysed and the pressure pulses that arise from them are related to knock in gasoline engines and to developing detonations in ducts. In controlled autoignition engines, autoignition is benign with little knock.
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Journal of Combustion, 2019 This study deals with the development of controlled-ignition technology for high-performance compression ignition alcohol engines. Among the alcohol fuels, we focus on ethanol as it is a promising candidate of alternative fuels replacing petroleum.
Hironori Saitoh +2 more
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Eurasian Chemico-Technological Journal, 2014 The CO2 emission prevention advantage of generating power with high hydrogen content fuels using gas turbines motivates an improved understanding of the ignition behavior of hydrogen in premixed and partially premixed environments.
A. North +4 more
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NO Formation and Autoignition Dynamics during Combustion of H2O-Diluted NH3/H2O2 Mixtures with Air
Energies, 2020 NO formation, which is one of the main disadvantages of ammonia combustion, was studied during the isochoric, adiabatic autoignition of ammonia/air mixtures using the algorithm of Computational Singular Perturbation (CSP).
Ahmed T. Khalil +3 more
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Influence of fuel properties on knock under lean combustion conditions
Nihon Kikai Gakkai ronbunshu, 2021 Internal combustion engines today are required to provide even higher levels of thermal efficiency. Raising the compression ratio and applying lean combustion are effective measures for increasing the thermal efficiency of internal combustion engines ...
Teruhiko OTOKOZAWA +2 more
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Autoignition Behavior of an Ethanol-Methylcellulose Gel Droplet in a Hot Environment
Energies, 2018 Autoignition of an ethanol-based gel droplet was experimentally investigated by adding 10 wt % of methylcellulose as gellant to liquid ethanol. Experimental studies of the ignition behavior of the gel droplet were found to be quite rare.
Donggi Lee +3 more
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Comprehensive study of autoignition characteristics of propane [PDF]
PeerJ Physical Chemistry, 2023 Ignition delay times (IDT) for stoichiometric propane (C3H8) diluted with nitrogen were measured in a shock tube facility under reflected shock wave conditions at pressures ranging from 1 to 10 atm and temperatures between 850 and 1500 K. The experiments
Muhammad Farhan
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Impact of engine pressure-temperature trajectory on autoignition for varying fuel properties
Applications in Energy and Combustion Science, 2020 The U.S. Department of Energy's Co-Optimization of Engines and Fuels (Co-Optima) initiative is pursuing higher efficiency engines on the basis of fuel properties, and in particular, using fuels that enable multimode combustion strategies that include ...
James P. Szybist, Derek A. Splitter
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