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Norm
ÖNORM EN ISO 5165
Issue date: 2020 10 15
Petroleum products - Determination of the ignition quality of diesel fuels - Cetane engine method (ISO 5165:2020)
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, variab...
Valid
Publisher:
Austrian Standards International
Format:
Digital | 29 Pages
Language:
German
| English
| Download GER/ENG
Optionally co-design standards:
ICS
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) 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 or vegetable oils. However, the precision for those fuels has not been established and 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.
ÖNORM EN ISO 5165
2020 10 15
Petroleum products - Determination of the ignition quality of diesel fuels - Cetane engine method (I...
Norm
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ÖNORM EN ISO 5165
2018 06 15
Petroleum products - Determination of the ignition quality of diesel fuels - Cetane engine method (I...
Norm
ÖNORM EN ISO 5165
1999 04 01
Petroleum products - Determination of the ignition quality of diesel fuels - Cetane engine method (I...
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Petroleum products — Determination of the ignition quality of diesel fuels — Cetane engine method