BS ISO 16332:2018 pdf free.Diesel engines – Fuel filters – Method for evaluating fuel/water separation efficiency.
As commercially available.
For biodiesel and biodiesel containing fuels the direct Karl Fischer method Is recommended.
Humidity is probably the largest source of error during the titration process. Special precautions shall be taken during setup and testing. The amount of water per sample should be S0 tg to reach a good relation between titration time and accuracy.
5.2.3.2 Centrifuge
For higher water concentration as specified in 6.4.1. 20 000 ppm water concentration, a centrifuge according to can be used. The measurement accuracy according to Table 1 shall be confirmed.
5.2.4 Equipment for determination of IFT
The equipment for determination of the interfacial tension shall be according to ISO 9101.
5.3 Test stand
5.3.1 General
The test stand, shown diagrammatically In Figure 2. shall comprise a fuel/water separator test circuit as described in LiZ.
All parts in contact with fuel, should be made of stainless steel.
5.3.2 Fuel/water separator test circuit
5.3.2.1 Fuel sump (1)
The container with a conical bottom should be made of stainless steel. The fuel outlet shall be located at the lowest point of bottom. The container shall be able to contain the volume as specified in 1. The fuel sump shall be covered with a non-transparent cover to protect the fuel from light. The fuel sump shall contain a suitable device to maintain homogeneity of its content.
5.3.2.2 Water sump (6)
The container should be made of stainless steel or corrosion resistant material with appropriate volume.
NOTE Instead of the container, a continuous water supply unit can be used.
The heat exchanger shall be able to maintain the test fuel temperature T within the tolerances given in Table 1.
Alternative to the position of the heat exchanger depicted in Figurel. the heat exchanger can as well be positioned downstream the back pressure gauge (16).
5.3.2.4 Test pump (2)
A pump type shall be chosen, which does not exhibit pressure pulsation with an amplitude greater than
10 % of the average pressure at the inlet of the water emulsifying device.
5.3.2.5 Water injection pump (7)
The pump type shall be adjustable to enable a water concentration in the test circuit between 1 500 ppm and 20 000 ppm over the complete flow rate of test fluid.
5.3.2.6 Fuel flow meter(5a)
The equipment shall be suitable for the complete range of the flow rate of test fluid with an accuracy as specified in Table 1.
5.3.2.7 Water flow meter (Sb)
The equipment shall be suitable for the complete range of the required injection range with an accuracy as specified in Table 1.
5.3.2.8 Injection device (8)
The concept shall allow a continuous water injection. The resulting DSD at the injection point shall be validated. The validation criterion is defined by:
d3,50 shall be greater or equal to the d3,50 value chosen according to Z
5.3.2.9 Water emulsifying devIce (9)
The concept shall be able to generate a DSD as specified according to Jet emulsification – as described in Annex B is recommended to be applied.
For each combination of emulsifying device, test fuel, flow rate and temperature a calibration curve is mandatory
In case the jet emulsification concept in accordance with Annex B is used, the calibration procedure is described in 4.BS ISO 16332 pdf download.
Tags: Diesel engines - Fuel filters - Method
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