Standard Test Method for Evaluation of the Ability of Engine Oil to Emulsify Water and Simulated Ed85 Fuel

Importancia y uso:

5.1 During engine operation, engine oil can become contaminated by water and fuel. In the case of Ed85 fuels, this contamination can result in a non-emulsified aqueous bottom layer in the oil that can affect the lubrication and detergency of the engine oil. To avoid field problems, engine oil should be capable of emulsifying water contamination to the extent that no aqueous presence appears.

5.2 The test described in this method is designed to evaluate the ability of an engine oil, contaminated with a specified amount of water (volume fraction of 10 % of the original oil sample) and simulated Ed85 fuel (also a volume fraction of 10 % of the original oil sample), to emulsify the water after agitation in a blender and to maintain this emulsion at temperatures of 20 °C to 25 °C and –5 °C to 0 °C for at least 24 h.

5.3 This test method has potential use in specifications of engine lubricating oils, such as Specification D4485.

Subcomité:

D02.B0.07

Referida por:

D4485-22E01

Volúmen:

05.04

Número ICS:

75.100 (Lubricants, industrial oils and related products)

Palabras clave:

denatured fuel ethanol; engine oil; engine oil emulsion; simulated Ed85 fuel; water emulsion;