EN 16568:2014
(Main)Automotive fuels - Blends of Fatty acid methyl ester (FAME) with diesel fuel - Determination of oxidation stability by rapidly accelerated oxidation method at 120 °C
Automotive fuels - Blends of Fatty acid methyl ester (FAME) with diesel fuel - Determination of oxidation stability by rapidly accelerated oxidation method at 120 °C
This European Standard specifies a test method for the determination of the oxidation stability of fuels for diesel engines, by means of measuring the induction period of the fuel up to 20 h at 120 °C. The method is applicable to blends of FAME with petroleum-based diesel having a FAME content in the range between 2 % (V/V) and 50 % (V/V).
NOTE 1 An almost identical test method for oxidation stability at 110 °C is described in EN 15751 [1], which applies to pure FAME and diesel/FAME blends containing 2 % (V/V) of FAME at minimum. Another alternative for distillate fuels is described in EN ISO 12205 [3].
NOTE 2 The precision of this method was determined using samples with a maximum induction period of ~ 20 h. Higher induction periods are not covered by the precision statement, however, the experience from EN 15751 indicates sufficient precision up to 48 h.
NOTE 3 The presence of cetane improver can reduce the oxidation stability determined by this test method. Limited studies with 2-ethyl hexyl nitrate (EHN) indicated, however, that the stability is reduced to an extent which is within the precision range of the test method.
NOTE 4 For the purposes of this European Standard, the term “% (V/V)” is used to represent the volume fraction (φ) of a material.
Kraftstoffe für Kraftfahrzeuge - Mischungen von Fettsäure-Methylestern (FAME) mit Dieselkraftstoff - Bestimmung der Oxidationsstabilität mittels beschleunigterem Oxidationsverfahren bei 120 °C
Diese europäische Norm legt eine Prüfmethode zur Bestimmung der Oxidationsstabilität von Kraftstoffen für Dieselmotoren fest, bei der die Induktionszeit des Kraftstoffs bei 120 °C über einen Zeitraum von bis zu 20 h gemessen wird. Die Methode ist anwendbar auf FAME-Blendkraftstoffe zur Verwendung mit Diesel auf Rohölbasis mit einem FAME-Gehalt im Bereich von 2 % (V/V) und 50 % (V/V).
ANMERKUNG 1 EN 15751 beschreibt eine nahezu identische Prüfmethode zur Bestimmung der Oxidationsstabilität bei 110 °C, anwendbar für reines FAME und Diesel/FAME-Blendkraftstoffe mit einem Mindestgehalt von 2 % (V/V) FAME. Eine weitere Alternative für Destillatkraftstoffe ist die EN ISO 12205 [3].
ANMERKUNG 2 Die Präzision dieses Verfahrens wurde anhand von Proben mit einer maximalen Induktionszeit von ~ 20h bestimmt. Höhere Induktionszeiten werden nicht von der Präzisionsangabe dieser Methode abgedeckt. Die Erfahrung aus EN 15751 lässt jedoch ausreichend Präzision bis zu 48h vermuten.
ANMERKUNG 3 Die Gegenwart eines Cetanzahlverbesserers kann die durch diese Prüfmethode bestimmte Oxidationsstabilität herabsetzen. Begrenzte Studien mit 2-Ethylhexylnitrat (EHN) zeigten allerdings auf, dass die Oxidations-stabilität nur in einem Umfang reduziert wird, der innerhalb der Präzision der Prüfmethode liegt.
ANMERKUNG 4 Für die Anwendung der vorliegenden Europäischen Norm wird der Ausdruck „% (V/V)“ verwendet, um den Volumenanteil darzustellen.
Carburants pour automobiles - Mélanges d'esters méthyliques d'acides gras (EMAG) avec du gazole - Détermination de la stabilité à l'oxydation par méthode d'oxydation plus accélérée à 120 °C
Goriva za motorna vozila - Metilni estri maščobnih kislin (FAME) goriv in mešanic z dizelskim gorivom - Določevanje oksidacijske stabilnosti z metodo pospešene oksidacije pri 120 °C
Ta evropski standard določa preskusno metodo za ugotavljanje oksidativne stabilnosti goriv za dizelske motorje z merjenjem indukcijskega časa goriva do 48 ur pri temperaturi 120 °C. Metoda se uporablja za metilne estre maščobnih kislin (FAME), ki so namenjeni za uporabo kot čisto biogorivo ali kot komponenta za mešanje z dizelskimi gorivi, in za mešanice metilnih estrov maščobnih kislin z dizelskim gorivom, ki vsebujejo najmanj 2 % (V/V) metilnih estrov maščobnih kislin.
OPOMBA 1 Podobna preskusna metoda za oksidativno stabilnost pri temperaturi 110 °C je opisana v standardu EN 15751 [1], ki velja za čiste metilne estre maščobnih kislin in mešanice dizelskih goriv in metilnih estrov maščobnih kislin, ki vsebujejo najmanj 2 % (V/V) metilnih estrov maščobnih kislin. Druga možnost za destilate goriv je opisana v standardu EN ISO 12205 [3].
OPOMBA 2 Izjava o natančnosti te metode ne zajema natančnosti za obdobja indukcije, daljša od 48 ur. Mejne vrednosti ustreznih standardov za gorivo sodijo v področje uporabe te preskusne metode.
S prisotnostjo aditiva za izboljšanje cetana je mogoče zmanjšati oksidativno stabilnost, ki jo določa ta preskusna metoda. Omejene študije z 2-etil heksil nitratom (EHN) nakazujejo, da je stabilnost zmanjšana do stopnje, ki je v območju natančnosti preskusne metode.
General Information
Relations
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Kraftstoffe für Kraftfahrzeuge - Kraftstoff Fettsäure-Methylester (FAME) und Mischungen mit Dieselkraftstoff - Bestimmung der Oxidationsstabilität mittels beschleunigterem Oxidationsverfahren bei 120 °CCarburants automotives - Esters méthyliques d'acides gras (EMAG) et mélanges avec gazole - Détermination de la stabilité à l'oxydation accélérée rapide à 120 °CAutomotive fuels - Fatty acid methyl ester (FAME) fuel and blends with diesel fuel - Determination of oxidation stability by rapidly accelerated oxidation method at 120 °C75.160.20Liquid fuelsICS:Ta slovenski standard je istoveten z:EN 16568:2014SIST EN 16568:2015en,fr,de01-marec-2015SIST EN 16568:2015SLOVENSKI
STANDARD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 16568
December 2014 ICS 75.160.20 English Version
Automotive fuels - Blends of Fatty acid methyl ester (FAME) withdiesel fuel - Determination of oxidation stability by rapidly accelerated oxidation method at 120 °C
Carburants pour automobiles - Esters méthyliques d'acides gras (EMAG) et mélanges avec gazole - Détermination de la stabilité à l'oxydation par méthode d'oxydation plus accélérée à 120 °C
Kraftstoffe für Kraftfahrzeuge - Mischungen von Fettsäure-Methylestern (FAME) mit Dieselkraftstoff - Bestimmung der Oxidationsstabilität mittels beschleunigterem Oxidationsverfahren bei 120 °C This European Standard was approved by CEN on 9 November 2014.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre:
Avenue Marnix 17,
B-1000 Brussels © 2014 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 16568:2014 ESIST EN 16568:2015
Background of the method . 15 Bibliography . 16
2-ethyl hexyl nitrate (2-EHN) at 110 °C and 120 °C was performed. SIST EN 16568:2015
EN ISO 3171,
EN ISO 3696, tater for analytical laboratory use
3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 induction period time which passes between the moment when the measurement is started and the moment when the formation of oxidation products begins to increase rapidly 3.2 oxidation stability induction period determined according to the procedure specified in this European Standard, expressed in hours 4 Principle A stream of purified air is passed through the sample which has been heated to the specified, elevated temperature. Volatile compounds are formed during the oxidation process. They are passed together with the air into a measurement cell containing demineralised or distilled water, equipped with a conductivity electrode. The electrode is connected to a measuring and recording device. It indicates the end of the induction period by rapid increase of the conductivity due to the dissociation of volatile carboxylic acids produced during the oxidation process and absorbed in the water. For more details on the background of the method see Annex A. SIST EN 16568:2015
Key 1 air filter (6.1.1) 5 electrode (6.1.5) 2 gas membrane pump with flow rate control (6.1.2) 6 measuring and recording apparatus (6.1.6) 3 reaction vessel (6.1.3) 7 thyristor and contact thermometer (6.1.7) 4 measurement cell (6.1.4) 8 heating block (6.1.8) Figure 1 — Apparatus 6.1.1 Air filter, comprising a tube fitted with filter paper at the ends and filled with a molecular sieve (6.6), connected to the suction end of a pump. 6.1.2 Gas membrane pump, with an adjustable flow rate of (10 ± 1,0) l/h. 6.1.3 Reaction vessels of borosilicate glass, provided with a sealing cap. SIST EN 16568:2015
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.