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BS EN 16568:2023

BS EN 16568:2023

$102.76

Automotive fuels. Blends of Fatty acid methyl ester (FAME) with diesel fuel. Determination of oxidation stability by rapidly accelerated oxidation method at 120 °C

Published By Publication Date Number of Pages
BSI 2023 20
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This document specifies a test method for the determination of the oxidation stability at 120 °C of fuels for diesel engines, by means of measuring the induction period of the fuel up to 20 h. 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. Other alternative test methods for the determination of the oxidation stability of distillate fuels are described in CEN/TR 17225 [3]. NOTE 2 The precision of this method was determined using samples with a maximum induction period of approximately 20 h. Higher induction periods are not covered by the precision statement; however, 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 that the stability is reduced to an extent which is within the reproducibility of the test method. NOTE 4 For the purposes of this document, the term “% (V/V)” is used to represent the volume fraction.

PDF Catalog

PDF Pages PDF Title
2 undefined
7 1 Scope
2 Normative references
3 Terms and definitions
8 4 Principle
5 Chemicals
6 Apparatus
11 7 Sampling
8 Preparation of measurement
8.1 Preparation of test sample
8.2 Preparation of the apparatus
8.2.1 Cleaning procedure
12 8.2.2 Temperature correction
8.2.2.1 General
8.2.2.2 Procedure
9 Measurement
16 10 Calculation and evaluation
10.1 Automatic evaluation
17 10.2 Manual evaluation
11 Expression of results
12 Precision
12.1 General
12.2 Repeatability, r
12.3 Reproducibility, R
18 13 Test report

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BS EN 16568:2023
$102.76