cetane number of hydrocarbons energy

Cetane

Cetane Also known as: Cetane number Cetane index Cetane is one of the most important product qualities for diesel Specifically cetane is a measure of the tendency of diesel fuel to auto-ignite when injected into the combustion chamber of a diesel engine that has been heated by compression of the air in the chamber

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A Group Contribution Method for Estimating Cetane

article{osti_1291241 title = {A Group Contribution Method for Estimating Cetane and Octane Numbers} author = {Kubic William Louis} abstractNote = {Much of the research on advanced biofuels is devoted to the study of novel chemical pathways for converting nonfood biomass into liquid fuels that can be blended with existing transportation fuels

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Diesel Fuels Technical Review

4 U S Department of Energy Energy Information Administration "International Energy Annual 2003 " 5 These four products represent a class of petroleum products with a boiling range of approximately 200C to 300C (400F to 600F) Following historical practice this

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Models for the calculation and prediction of the octane

Based on an approach to finding structure-property relationships we constructed models for calculating the octane and cetane numbers of individual hydrocarbons (alkanes and cycloalkanes) The models obtained for octane numbers are superior to well-known analogous models described in the literature in terms of the accuracy and predictive efficiency

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Navy researchers produce high

Researchers at the Naval Air Warfare Center Weapons Division China Lake have produced three new high-density high-cetane biofuels from sesquiterpene feedstocks In an open-access paper published in the RSC journal Sustainable Energy Fuels they describe the preparation of the three fuels from sesquiterpene components of cedarwood oil The three

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Cetane number vs structure in paraffin hydrocarbons

Cetane number vs structure in paraffin hydrocarbons (Note: The full text of this document is currently only available in the PDF Version) Simone M Heck Huw O Pritchard and John F Griffiths By using a 'reduced kinetic model' for the spontaneous ignition of hydrocarbon–air mixtures it is found that for n-paraffins in the diesel-fuel boiling range there is a simple

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Cetane Number

The cetane number (CN) is an indicator of the ignitibility of diesel fuels It provides information about the ignition delay i e the speed of self-ignition of diesel fuel when injected into hot air through the fuel injector In an engine that works on the diesel principle the cetane number is authoritative for describing the quality of the combustion process

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Diesel

2 Polycyclic aromatic hydrocarbons are defined as the total aromatic hydrocarbon content less the mono-aromatic hydrocarbon content 3 Fatty Acid methyl Ester (FAME ) meeting EN14214: 2012 4 The Summer and Winter dates specified above apply to diesel being delivered from our import depots 5 Performance additives (detergent anti-foam etc

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Difference Between Kerosene and Diesel

Compared to kerosene diesel has a rigid molecular structure Its carbon chains range from 16 atoms The quality of diesel is determined using the cetane number where the higher cetane number indicates the extent of ignition When sprayed into hot compressed air the petro-diesel with high cetane number will ignite quickly In winter seasons

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Hydrogen Fuel

Hydrogen Fuel Cell Engines MODULE 1: HYDROGEN PROPERTIES OBJECTIVES At the completion of this module the technician will understand: • the atomic structure of hydrogen • the physical and chemical properties of hydrogen • how hydrogen compares to hydrocarbon fuels in terms of energy flammability and safety

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Cetane number

Cetane number or CN is an indicator of the combustion speed of diesel fuel It is an inverse of the similar octane rating for gasoline (petrol) The CN is an important factor in determining the quality of diesel fuel but not the only one other measurements of diesel's quality include (but are not limited to) energy content density lubricity cold-flow properties and sulphur content

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Fuel properties

Cetane number=5 20 meaning that gasoline has a relative large time-lag between injection in hot air and autoignition although this is irrelevant in typical gasoline applications (spark ignition) Composition Gasoline composition has changed in parallel with SI-engine development Lead tetraethyl Pb(C 2H 5)

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High Cetane Index! What to do?

The lower the cetane number of a fuel the greater the ignition delay and the longer the period of time between fuel injection and the beginning of the rapid pressure rise associated with fuel ignition and combustion The cetane number of a fuel is dependent on the nature of the hydrocarbon from which the fuel is refined and the extent of

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The effect of cetane number and oxygen content in the

İıNGR Y ALTIPARMAK D 2003 Effect of fuel cetane number and injection pressure on a DI Diesel engine performance and emissions Energy conversion and management 44 389-397 INNES W B 1981 Effect of nitrogen oxide emissions on ozone levels in metropolitan regions Environmental science technology 15 904-912

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