Norm

NEN-EN 15195:2014 en

Vloeibare aardolieproducten - Bepaling van de ontstekingvertraging en van het afgeleide cetaangetal (DCN) van middendestillaten door verbranding in een constante volumekamer

61,30

Over deze norm

Status Definitief
Aantal pagina's 25
Commissie Vloeibare en gasvormige brandstoffen, smeermiddelen en verwante producten
Gepubliceerd op 01-11-2014
Taal Engels
NEN-EN 15195 specifies a test method for the quantitative determination of ignition delay of middle distillate fuels intended for use in compression ignition engines. The method utilizes a constant volume combustion chamber designed for operation by compression ignition, and employing direct injection of fuel into compressed air that is controlled to a specified pressure and temperature. An equation is given to calculate the derived cetane number (DCN) from the ignition delay measurement. This European Standard is applicable to diesel fuels, including those containing fatty acid methyl esters (FAME) up to 30 % (V/V). The method is also applicable to middle distillate fuels of non-petroleum origin, oil-sands based fuels, blends of fuel containing biodiesel material, diesel fuel oils containing cetane number improver additives and low-sulfur diesel fuel oils. However, users applying this standard especially to unconventional distillate fuels are warned that the relationship between derived cetane number and combustion behaviour in real engines is not yet fully understood. The test method is also applicable to the quantitative determination of the ignition characteristics of FAME, especially the ignition delay. However the correlation data available were inconclusive about the precision of the equation. So the determination of derived cetane number for FAME fuel, also known as B100, has not been included in the precision determination as in Clause 122). This European Standard covers the ignition delay range from 2,8 ms to 6,3 ms (71 DCN to 34 DCN). The combustion analyser can measure shorter or longer ignition delays, but precision is not known. For these shorter or longer ignition delays the correlation equation for DCN is given in Annex D.

Details

ICS-code 75.160.20
Nederlandse titel Vloeibare aardolieproducten - Bepaling van de ontstekingvertraging en van het afgeleide cetaangetal (DCN) van middendestillaten door verbranding in een constante volumekamer
Engelse titel Liquid petroleum products - Determination of ignition delay and derived cetane number (DCN) of middle distillate fuels by combustion in a constant volume chamber
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