Results 191 to 200 of about 13,935 (250)

Effect of Residual Gases on Autoignition 2,—Measurement of Autoignition Time†

Combustion Science and Technology, 1997
The effect of OH radical in residual gases was measured by making the residual gas with less OH concentration. The residual gas (2) with less OH was produced by burning of mixtures with CO as a main fuel, while the residual gas (1) with normal OH concentration was produced by burning of a stoichiometric n-C4H10 /air mixture.
SHINJI KOJIMA, TETSUNORI SUZUOKI, MASAO KATAOKA   +2 more
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Engine autoignition: The relationship between octane numbers and autoignition delay times

Combustion and Flame, 2006
The research octane (RON) and motor octane (MON) numbers, carefully measured in standardized tests, are the principal parameters for characterizing autoignition of gasoline in engines. Increasingly, engines operate under different conditions of temperature, pressure, and mixture strength from those in these tests. As a result, RON and MON values become
Derek Bradley, R.A. Head
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Autoignition and detonation development induced by temperature gradient in n-C7H16/air/H2O mixtures

The Physics of Fluids, 2021
The effects of water vapor dilution on autoignition and detonation development induced by an ignition spot with thermal non-uniformity in an n-C7H16/air mixture are numerically investigated.
Zhou Yu, Huangwei Zhang, P. Dai
semanticscholar   +1 more source

The autoignition of polymers

Journal of Applied Polymer Science, 1973
AbstractA consistent and relatively simple method is presented for studying the unpiloted ignition of polymeric materials in contact with hot air. The ignition behavior of a particular polymer as determined by its bulk properties may be characterized by the relationship between sample mass and ignition time at constant area for a series of furnace ...
Bernard Miller, J. Ronald Martin, Charles H. Meiser   +2 more
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Autoignition Characteristics of Methanol

SAE Technical Paper Series, 1996
<div class="htmlview paragraph">An experimental study was conducted to investigate the autoignition characteristics of methanol. Experimental conditions which were explored included temperatures in the range of 650-800 K, equivalence ratios of 0.2-17.0, 1 atm pressure, and reactor surface-to-volume ratios. S/V, of 0.6 cm⁻¹″
Michael J. Bowman, Richard D. Wilk
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Autoignition Characteristics of Ethanol

SAE Technical Paper Series, 1996
<div class="htmlview paragraph">The autoignition characteristics of ethanol were examined in the 667-743 K temperature range at one atmosphere. A closed static reactor testing facility, of the Le Chatelier type was employed in this study. The autoignition limits for two ethanol concentrations at varied oxygen-nitrogen concentrations are mapped ...
Joseph W. Bollentin, Richard D. Wilk
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Scramjet Fuels Autoignition Study

Journal of Propulsion and Power, 2001
A series of shock-tube experiments was conducted to measure and compare the ignition-delay times of several fuel candidates for scramjet propulsion and to evaluate the importance of fuel cracking on the autoignition of endothermic-fuel/product mixtures.
Meredith B. Colket, Louis J. Spadaccini
openaire   +1 more source

Response of Autoignition-Stabilized Flames to One-Dimensional Disturbances: Intrinsic Response

Journal of Engineering For Gas Turbines and Power, 2021
Burning carbon-free fuels such as hydrogen in gas turbines promises power generation with reduced greenhouse gas emissions. A two-stage combustor architecture with an autoignition-stabilized flame in the second stage allows for efficient combustion of ...
H. Gopalakrishnan, A. Gruber, J. Moeck
semanticscholar   +1 more source

AUTOIGNITION associated with HOT STARTING

SAE Technical Paper Series, 1958
<div class="section abstract"><div class="htmlview paragraph">USING a high-speed motion picture camera, flame photographs were taken of the combustion process associated with the starting of hot gasoline engines.</div><div class="htmlview paragraph">Compression ignition at isolated points followed by normal combustion caused ...
F. W. Bowditch, R. F. Stebar
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Turbulent broadening of autoignition limits

Symposium (International) on Combustion, 1994
The authors present a model for calculating the autoignition time in a turbulent flow in which fuel and air are being mixed. The model is applied to the 40-atm heptane-air system. Chemical kinetics are described by a four-step reduces mechanism or a 19-step reduced mechanism. Mixing is described by a particle-tracking probability density function (PDF)
Sanjay M. Correa, Anthony J. Dean
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