19/30399897 DC - BS EN ISO 5165. Petroleum products. Determination of the ignition quality of diesel fuels. Cetane engine method

19/30399897 DC

BS EN ISO 5165. Petroleum products. Determination of the ignition quality of diesel fuels. Cetane engine method

Status : Current, Draft for public comment   Published : September 2019

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This document establishes the rating of diesel fuel oil in terms of an arbitrary scale of cetane numbers (CNs) using a standard single cylinder, four-stroke cycle, variable compression ratio, indirect injected diesel engine. The CN provides a measure of the ignition characteristics of diesel fuel oil in compression ignition engines. The CN is determined at constant speed in a pre-combustion chamber-type compression ignition test engine. However, the relationship of test engine performance to full scale, variable speed and variable load engines is not completely understood.

This document is applicable for the entire scale range from 0 CN to 100 CN but typical testing is in the range of 30 CN to 65 CN. An interlaboratory study executed by CEN in 2013 (10 samples in the range 52,4 CN to 73,8 CN)[1] confirmed that paraffinic diesel from synthesis or hydrotreatment, containing up to a volume fraction of 7 % fatty acid methyl ester (FAME) can be tested by this test method and that the precision is comparable to conventional fuels.

This test can be used for unconventional fuels such as synthetics, vegetable oils, etc. However, the relationship to the performance of such materials in full scale engines is not completely understood.

Samples with fluid properties that interfere with the gravity flow of fuel to the fuel pump or delivery through the injector nozzle are not suitable for rating by this method.

NOTE

This document specifies operating conditions in SI units but engine measurements are specified in inch-pound units because these are the historical units used in the manufacture of the equipment, and thus some references in this document include these units in parenthesis.




Standard Number19/30399897 DC
TitleBS EN ISO 5165. Petroleum products. Determination of the ignition quality of diesel fuels. Cetane engine method
StatusCurrent, Draft for public comment
Publication Date23 September 2019
Normative References(Required to achieve compliance to this standard)ISO 3170, ASTM E832-81, ASTM D613, ISO 3171, ASTM D3703, ISO 3696, ISO 4787
Informative References(Provided for Information)SAE J300, ISO 3015
International RelationshipsISO/DIS 5165
Draft Expiry Date05 November 2019
DescriptorsIgnition, Calibration, Quality, Diesel engines, Cetane number, Fire tests, Testing conditions, Petroleum products, Diesel fuels, Fuels, Automotive fuels, Fuel oil, Ignitability
ICS75.160.20
Title in FrenchProduits pétroliers -- Détermination de la qualité d'inflammabilité des carburants pour moteurs diesel -- Méthode cétane
CommitteePTI/13
PublisherBSI
FormatA4
DeliveryYes
Pages29
File Size2.124 MB
NotesWarning: this draft is not current beyond its expiry date for comments.
Price£20.00


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