
	Where results make sense

Topic: Cetane

Related Topics

Hexadecane

Heptadecane

Petrodiesel

Hydrocarbon

Octane

Heptane

Butane

Fuel

Isomer

Chemical formula

Alkane

IUPAC nomenclature

CAS number

Diesel engine

Flash point

	Cetane number (Bruce Hamilton)
		It is the % volume of cetane (n-hexadecane, Cetane Number = 100) in alpha methyl naphthalene (Cetane Number = 0), that provides the specified standard of 13 degrees (crankshaft angle) ignition delay at the identical compression ratio to that of the fuel sample.
		The cetane number is then determined by interpolation, and the higher the Cetane Number, the shorter the delay between injection and ignition.
		The significance of the cetane number increases with the speed of the engine, and large, low speed diesel engines often only specify viscosity, combustion and contaminant levels, as Cetane Number requirement of the engine is met by most distillate and residual fuels that have the appropriate propeties.
	yarchive.net /car/cetane_number.html (0 words)

	Prepared to Respond (P2R) Services - Additives Brocure Insert - Cetane Improver for Diesels
		Cetane number is a measure of the ignition and combustion quality of diesel fuel; the higher the cetane number, the more efficiently the engine operates.
		A cetane number of 40 is a common specification in contracts and for pipelines, while a higher cetane number is often required by fleet operators for over-the-road operations.
		While the effective treating rate depends on the base cetane number of the fuel and the amount of cetane increase desired, a rule of thumb is that a treat rate of 600 ppm will improve the cetane number of a diesel fuel by three numbers.
	www.bakerhughes.com /bakerpetrolite/p2r/additives_cetane.htm (444 words)

	Cetane number of diesel fuel by incorporating polynitrate esters and stabilizers - Patent 4705534
		The composition of claim 1 wherein the polynitrate ester is selected from the group consisting of ethylene glycol dinitrate, diethylene glycol dinitrate, triethylene glycol dinitrate, 2-methyl-2 [(nitroxy)methyl]-1,3-propanediol dinitrate ester, butanetriol trinitrate 1,3, propanediol dinitrate, nitroglycerin, cellulose tri, di, and mononitrate and mixtures thereof.
		Cetane number improvers have been used in the form of additives to upgrade marginal diesel fuels to meet specifications for ignition quality.
		The mixture of polynitrate ester and stabilizer, preferably in the stock solution form, is mixed in the diesel oil to be treated for cetane improvement and used for fuel in sufficient quantity to result in a concentration of between about 0.05 and about 1% by weight of the polynitrate ester in the diesel oil.
	www.freepatentsonline.com /4705534.html (1266 words)

	cetane number
		A substance that ignited very quickly, cetane (n-hexadecane) was arbitrarily given a rating of 100, and a substance that was slow to ignite, alpha-methylnapthalene (later called 1-methylnapthalene), was assigned a rating of zero.
		The cetane number is the percentage by volume of cetane in the mixture that has the same performance as the fuel being tested.
		In calculating the cetane number allowance is made for the 15-cetane rating of the heptamethylnonane, to keep the scale as it was.
	www.sizes.com /units/cetane_number.htm (575 words)

	Process for enhancing the cetane number of diesel fuel - Patent 4643820
		2,184,440 relates to methods of increasing the cetane number of blended diesel fuels by blending diesel fuels from different sources, one of which is a high sulfur crude, and treating the blended fuel with sodium plumbite and a large excess of elemental sulfur.
		However, because of the known relationship of nitrogenous treating agent to cetane number, it is often advantageous when using a nitrogenous treating agent to carefully control the minimum amount of nitrogen compounds added to the diesel feed in order to insure a sufficient cetane number in the diesel fuel produced.
		The measured cetane ratings of these treated oils were from 44 to 50, with an improvement over step (1) diesel oil feed (40 cetane) of 4 to 10 cetane numbers, similar to that which would be expected from the prior art.
	www.freepatentsonline.com /4643820.html (7750 words)

	Cetane in Diesel Fuel
		Cetane number should not be considered alone when evaluating diesel fuel quality.
		The cetane number of the sample fuel is determined by estimating between the two reference fuel points.
		The calculated cetane index is derived from the fuel's density and boiling range.
	www.globalfinest.com /tech/cetan.html (0 words)

	Cetane Boost Diesel Fuel Additive (Site not responding. Last check: 2007-10-31)
		Cetane number is the measure of a diesel fuel's ignition quality.
		Cetane, the colorless, oily hydrocarbon on which the cetane number scale is based, has extremely good inginition quality and is assigned a cetane number of 100.
		The cetane numbers of North American diesel fuels may be as low as 37, which may cause startability and driveability problems.
	www.gosynthetic.com /cetane.htm (155 words)

	NON-ROAD DIESEL FUELS IN EUROPE (Site not responding. Last check: 2007-10-31)
		Cetane number is mainly based on the properties of hydrocarbon fractions originated from crude oil.
		This means a declining trend of cetane number in gas oils which is not good from the point of view of non-road engines.
		Cetane number of gas oils can be improved but it is costly requiring energy and hydrogen at the refineries.
	www.vtt.fi /virtual/amf/annex_xxv/europe.htm (344 words)

	Aronol Marine Power Plus
		One function of Aronol MPP is to raise the cetane rating of the diesel fuel.
		Cetane ratings of diesel fuels are similar to octane rating in gasoline.
		This is a result of low cetane fuel which ignites late in the cylinder, without sufficient time to burn completely during the power stroke.
	www.marinepartsexpress.com /aronol.htm (411 words)

	Prediction of FCCU Gasoline Octane and Light Cycle Oil Cetane Index
		The cetane index is a calculated value using the ASTM mid boiling point and API gravity, and correlates well with cetane number.
		A diesel fuel with a high cetane index has a low spontaneous ignition point, that is, combusts at lower temperature from the heat of compression of the diesel engine.
		Cetane index is different from cetane number only in that the former is a calculation.
	www.refiningonline.com /EngelhardKB/crep/TCR4_32.htm (1873 words)

	Clean Air USA - Biodiesel Fuel is Better
		Cetane measures the tendency of diesel to autoignite in an engine, and is comparable to the octane number for gasoline.
		Higher cetane fuels have shorter ignition delay periods than lower cetane fuels.
		Fuels with a cetane number lower than the engine's minimum requirements can cause rough engine operation and may be more difficult to start, especially in cold weather or at high altitudes.
	cleanairusa.org /truck-cetane.html (533 words)

	BP Ultimate UK - Higher cetane
		Cetane number is the key measure of diesel fuel combustion quality.
		Conversely, low cetane number fuels are slow to ignite and then burn too rapidly, leading to high rates of pressure rise.
		This improved cetane quality means that BP Ultimate Diesel burns more smoothly and completely than ordinary diesel, so it can help deliver enhanced engine performance and better fuel economy, and reduce exhaust emissions and engine noise.
	www.bp.com /sectiongenericarticle.do?categoryId=4005623&contentId=7009145 (0 words)

	Arbokem's cetane-enhanced fuel from vegetable oil (Site not responding. Last check: 2007-10-31)
		Typically, the cetane enhancer would be admixed with diesel fuel in the range of 5 to 30% by volume.
		Tall oil has been shown to be economical feedstock for the manufacture of cetane enhancer for diesel fuels, using the proprietary CANMET (Canada Centre for Mineral and Energy Technology) technology.
		Pilot plant testing of this process for the conversion of tall oil into cetane enhancers for diesel fuel is presently in progress.
	www.arbokem.com /nat_r/cetane_2.html (751 words)

	:Digression on Diesel Fuel Properties-Cont----->>:
		The cetane number is the standard measure of this property although it is difficult to measure precisely and has been criticized in recent years for not accurately reflecting the autoignition conditions in modern turbocharged engines, particularly with alternative fuels.
		Cetane Index - The cetane index is a calculated quantity that is intended to approximate the cetane number.
		Cetane improvers - Cetane improvers are fuel additives that are designed to readily decompose to give precursors to combustion and thus enhance the rate at which auto-ignition occurs in a diesel engine.
	www3.me.iastate.edu /biodiesel/Pages/biodiesel17.html (923 words)

	CETANE NUMBER EFFECTS ON LDD PERFORMANCE
		Cetane number has potential impacts on cold start and driveaway, noise, vibration, and other driveability parameters as well as potential impacts on vehicle emissions performance.
		Cetane number may be enhanced with the use of commercially available additives or through blending components with naturally-occurring cetane number to achieve the desired quality level.
		The goal of this project is to determine the effects of cetane number ranging from 40 to approximately 55 on advanced LD diesel vehicle operability.
	www.crcao.com /annualreport/AVFL/avfl11.htm (591 words)

	diesel fuel (Site not responding. Last check: 2007-10-31)
		The cetane rating is a measure of the ignition quality of a diesel fuel.
		The higher the cetane number of a diesel fuel, the shorter the time lag from the moment when the fuel first enters the combustion chamber until it ignites.
		Cetane number rating is the percentage of cetane mixed with methyl-naphthalene to produce a similar ignition quality to that of the fuel being tested.
	www.freeautoadvice.com /diesel/dieselfuel.html (397 words)

	cetane number definition - Dictionary - MSN Encarta
		cetane number definition - Dictionary - MSN Encarta
		measurement of diesel fuel ignition quality: the performance rating of a diesel fuel, expressed as the percentage of cetane in a mixture with 1-methylnaphthalene that shows the same ignition properties.
		The higher the cetane number, the better the performance.
	encarta.msn.com /dictionary_1861687365/cetane_number.html (114 words)

	Renewable Energy, Energy Research and Development, CANMET Energy Technology Centre / Centre de la technologie de ...
		By raising the cetane content in diesel fuel, engine pollutant emissions are reduced and fuel economy improves.
		It has a cetane number (a measure of ignition quality) of around 100 - which is comparable to commercial cetane additives.
		The cetane number increases linearly with the concentration of SuperCetane, unlike commercial additives, whose impacts are limited above a certain concentration.
	www.nrcan.gc.ca /se/etb/cetc/cetc01/htmldocs/Publications/factsheet_supercetane_technology_e.htm (829 words)

	Biodiesel Magazine (Site not responding. Last check: 2007-10-31)
		Most diesel customers currently use a "cetane index" (a mathematical model using distillation and density as a correlation to the cetane number) instead of a cetane number to evaluate their fuel's combustion quality.
		Cetane 2000 is the first analytical tool that includes analyses for density, cetane number and cetane index plus cetane improver, total aromatics, polynuclear aromatic and biodiesel content in the same portable instrument.
		The cetane number was the average of the multi-rated results, optimizing the chance of an accurate cetane number.
	www.biodieselmagazine.com /article.jsp?article_id=574 (957 words)

	Diesel Fuel Additive Cetane Boost
		Higher cetane numbers produce improved driveability, reduced emissions and fl smoke and the driver of the vehicle can feel the power difference a quality fuel with a high cetane number produces.
		With the AMSOIL Cetane Boost you can be assured your fuel is of the optimum cetane level for maximum performance regardless of where you purchase your fuel.
		Cetane defines the susceptibility of the fuel to self-ignite.
	www.honestlube.com /cetane-boost.php (1835 words)

	Diesel Fuel Quality \| Oil Spot
		Ignition delay is measured by the Cetane Number test (ASTM D 613), which uses a single-cylinder, variable compres- sion ratio engine analogous to the Octane Number engine.
		The cetane content of the blend that matches the ignition delay of the test fuel is its Cetane Number (CN).
		Diesel engines vary widely in their cetane requirements, and there is no commonly recognized way to measure this value.
	www.milespetroleum.com /article10.ivnu (1521 words)

	Diesel Fuel Additives
		Any benefit provided by a cetane number improver is immediate, whereas that provided by detergent additives or lubricity additives is typically seen over the long term, often measured in tens of thousands of miles.
		The increase in cetane number from a given concentration of EHN varies from one fuel to another.
		Some refiners use a cetane number improver when the additive cost is less than the cost of processing to increase cetane number.
	www.itow.org /fueladd.htm (3000 words)

	Diesel Fuel Characteristics and use
		Cetane is (sort of) an indication of the delay between fuel injection and fuel ignition, and the higher cetane of low sulfur fuel is a byproduct of the refining process to remove sulfur.
		Alkyl nitrates such as 2-ethylhexylnitrate improve cetane ratings, and are generally the way "premium" diesel fuel cetane ratings are increased over that of the "regular" fuel feedstock used to make the premium fuel.
		The significance of the cetane number increases with the speed of the engine, and large, low speed diesel engines often only specify viscosity, combustion and contaminant levels, as Cetane Number requirement of the engine is met by most distillate and residual fuels that have the appropriate properties.
	dodgeram.org /tech/dsl/FAQ/diesel_fuel.htm (6444 words)

	Vegetable oil yields, characteristics 2: Journey to Forever
		Cetane numbers rate the ignition properties of diesel fuels, just as octane numbers determine the quality and value of gasoline (petrol).
		Ignition delay is measured by the Cetane Number (CN) test (ASTM D 613), which uses a single-cylinder, variable compression ratio engine analogous to the Octane Number engine.
		Diesel engines vary widely in their cetane requirements, and there is no commonly recognized way to measure this value.
	journeytoforever.org /biodiesel_yield2.html (761 words)

	Power Service Products, diesel fuel additives, prevent gelling, clean injectors, disperse water, boost cetane, reduce ...
		Power Service Products is the leading manufacturer of the most technologically advanced diesel fuel additives available in the marketplace today.
		Diesel Kleen is loaded with cetane, detergency and lubricity additives to keep your diesel engine running at peak performance.
		Power Service Clear-Diesel™ Fuel & Tank Cleaner is an advanced fuel tank cleaning technology that has been proven effective in hundreds of fleet, marine, construction and agricultural applications.
	www.powerservice.com (393 words)

	Fluid Analysis Test Explanations: Viscosity, FTIR, Oil Analysis, Coolant Analysis, Fuel Analysis Tests, Analytical ...
		BTU (per pound) is the quantity of heat required to raise the temperature of one pound of water 1°F at 60°F and at a pressure of one atmosphere.
		Cetane Index is a measure of a diesel fuel’s ignition quality.
		The limit for a #2 diesel fuel is a Cetane Index of at least 40.
	www.polarislabs1.com /test-explanations.htm (2880 words)

Try your search on: Qwika (all wikis)