Results 21 to 30 of about 4,161 (170)
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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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.
openaire +2 more sources
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
doaj +1 more source
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
doaj +1 more source
Controlled autoignition in stratified mixtures [PDF]
, 2021 The shockless explosion combustion (SEC) is a recently proposed concept aiming for pressure gain combustion through an unsteady process of multiple, distributed autoignitions occurring simultaneously. For this, a stratified fuel profile of dimethyl ether
Yücel, Fatma Cansu +5 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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An investigation into the influence of autoignition chemistry and charge cooling under 'Beyond RON' operating conditions on the improved knock resistance of ethanol over iso-octane [PDF]
, 2013 The growing interest in alcohol fuels has led to the finding that benefits in terms of efficiency and power compared to traditional petrols can be gained due to the improved knock resistance of alcohols.
Bock, Bradley
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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
doaj +1 more source
Characterisation of the autoignition delay behaviour of n-heptane in the IQT combustion bomb using CFD modelling [PDF]
, 2007 Word processed copy.Includes bibliographical references.When n-heptane was tested in the IQT device over a range of temperatures and pressures, the measured autoignition delay did not correlate with the chemical autoignition delay associated with a ...
Metcalf, Owen J
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