Results 111 to 120 of about 4,161 (170)
Some of the next articles are maybe not open access.
Engine autoignition: The relationship between octane numbers and autoignition delay times
Combustion and Flame, 2006The 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
exaly +2 more sources
Autoignition of hydrogen in shear flows
Physics of Fluids, 2018 In this paper, we compare the autoignition characteristics of laminar, nitrogen-diluted hydrogen jets in two different oxidizer flow configurations: (a) co-flowing heated air and (b) wake of heated air, using two-dimensional numerical simulations coupled with detailed chemical kinetics.
Abhijit Kalbhor +2 more
openaire +2 more sources
End-gas autoignition and detonation development in a closed chamber
Combustion and Flame, 2015 It is generally accepted that knock in spark ignition engines might be caused by end-gas autoignition. However, the detailed mechanism for autoignition-induced pressure oscillation and detonation development is still not well understood.
Zheng Chen
exaly +2 more sources
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 +2 more
openaire +1 more source
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 +2 more
openaire +1 more source
The Shell autoignition model: applications to gasoline and diesel fuels
Fuel, 1999 The applications of the Shell model to modelling autoignition in gasoline and diesel engines are reported. The complexities of modelling autoignition in diesel sprays have been highlighted. In contrast to autoignition in gasoline engines, autoignition of
M R Heikal
exaly +2 more sources
Effect of Residual Gases on Autoignition 2,—Measurement of Autoignition Time†
Combustion Science and Technology, 1997The 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 +2 more
openaire +1 more source
End-gas autoignition and detonation in confined space
Progress in Energy and Combustion ScienceEnd-gas autoignition, especially with detonation development in a confined space, is a complex physical phenomenon, including premixed flame dynamics, fluid dynamics, autoignition chemistry etc., which is generally considered as the origin of knock and ...
Kai H Luo
exaly +2 more sources
A phenomenological explanation of the autoignition propagation under HCCI conditions [PDF]
Fuel, 2017 [EN] A phenomenological explanation about the autoignition propagation under HCCI conditions is developed in this paper. To do so, diffusive effects from the burned zones to the fresh mixture, pressure waves based effects and expansion effects caused by ...
Jose M Garcia-Oliver +2 more
exaly +2 more sources
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<sup>−1</sup>″
Michael J. Bowman, Richard D. Wilk
openaire +1 more source
Experimental Investigation of the Effects of Turbulence and Mixing on Autoignition Chemistry [PDF]
Flow, Turbulence and Combustion, 2010 The autoignition of acetylene, released from a finite-sized circular nozzle into a turbulent coflow of hot air confined in a pipe, has been the subject of a recent experimental study to supplement previous work for hydrogen and n-heptane.
Epaminondas Mastorakos +1 more
exaly +2 more sources