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ČSN EN ISO 5165 (656162) Nové vydání

Ropné výrobky - Stanovení cetanového čísla motorové nafty - Motorová metoda

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Cena: 350 Kč
včetně 10 % DPH
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skladem
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Zobrazit všechny normy ze třídy 6561 Zkušební metody pro světlé ropné produkty

ICS: 75.160.20 Kapalná paliva

Označení ČSN EN ISO 5165 (656162)
Katalogové číslo 504963
Cena 350 Kč vč. DPH
Datum schválení 1. 8. 2018
Datum účinnosti 1. 9. 2018
Jazyk angličtina (obsahuje pouze anglický originál)
Počet stran 36 stran formátu A4
EAN kód 8596135049639
Tato norma nahradila ČSN EN ISO 5165 (656162) z února 1999
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Anotace obsahu normy

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 7 % (V/V) 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.

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