This paper presents a review of gas-phase detailed kinetic models developed to simulate the low temperature oxidation and autoignition of gasoline and diesel fuel components (alkanes, ethers, esters, alkenes, cycloalkanes, aromatics, including from 4 atoms of carbon) and of mixtures of several of them, which have been proposed as surrogates. The recently proposed models are summarized, as well ...

This paper investigates the possibility of autoignition as a flashback initiation mechanism in laminar premixed burners powered by an increasing content hydrogen fuel blend. A specific experimental setup provides optical access inside generic burner reproducing main features domestic boilers. window is used to gather high-speed intensified images during transition flashback. Zooms into location...

It was found in our previous work that hyperbranched polyester (HPE) can generate radicals and accelerate the chemical reactions of hydrocarbon fuels used as initiators. In this work, evaporation autoignition characteristics JP-10 droplets with or without HPE were investigated using high-speed backlight imaging technique detail. The results indicate puffing micro-explosion phenomena HPE-blended...

A rapid compression machine (RCM) has been designed and built for investigating the autoignition characteristics of bio-derived jet and diesel fuels. The RCM has been designed with a particular emphasis on versatility, so that non-volatile fuels may be tested in a premixed gas phase, as a fuel spray, or as an aerosol in an oxidizing bath gas. A blend of these test approaches provides insight in...

Transported probability density function (PDF) methods are used to account for turbulent fluctuations in composition and temperature in simulations of liquid fuel injection (n-heptane), vaporization, mixing, autoignition, combustion and soot formation for a constant-volume combustion chamber. Both stochastic Lagrangian particle and stochastic Eulerian field methods are used to solve the modeled...

A series of experiments was conducted to investigate the global preignition and combustion characteristics corn oil heated in 9.7 26 cm diameter pans by a residential electric-coil element cooktop. For comparison, torch-ignited gasoline, heptane, were same configuration except without heating energized. Heating on typical electric cooktop leads vaporization generation an aerosol cloud followed ...

The research presented here describes the application of a multistep (8-step) autoignition model to oxygenated fuels such as alcohols and esters in a rapid compression machine. This modeling concept is aimed at capturing the ignition behavior of new oxygenated fuel blends, where detailed or reduced chemical kinetics data are not available. The predicted ignition delays from the multistep autoig...

Avoiding knock is the major design constraint for spark ignition engines because of the unacceptable noise and engine damage associated with it. Hence, the Research and Motor Octane Number (RON and MON) tests were established in 1928 such that a fuel with a higher RON and MON is less likely to knock than a fuel with a lower value. However, engine and fuel technology has evolved since 1928, and ...