NB/SH/T 0957-2017 in English

The industry standard NB/SH/T 0957-2017, titled "Evaluation Method for Emulsification Capability of Engine Oils with Water and Simulated Ed85 Fuel," was issued on December 27, 2017, and came into effect on June 1, 2018. This standard provides a comprehensive methodology for assessing the emulsification potential of engine oils when mixed with water and simulated Ed85 fuel. The purpose of this evaluation is to determine the stability and performance of engine oils under conditions that mimic real-world scenarios where fuels and water might mix, such as in flex-fuel vehicles or environments with high humidity.

The standard outlines specific procedures for preparing test samples, including the precise mixing ratios of engine oil, water, and simulated Ed85 fuel. It also details the equipment and conditions required for the emulsification tests, such as temperature control and agitation methods. The evaluation process involves observing the formation, stability, and separation of emulsions over a defined period. The results are used to classify the emulsification capability of the engine oils, which is critical for ensuring their compatibility with alternative fuels and their overall performance in engines.

By establishing a standardized method for this evaluation, NB/SH/T 0957-2017 helps manufacturers, researchers, and regulatory bodies ensure that engine oils meet the necessary performance criteria, particularly in applications involving ethanol-blended fuels. This standard contributes to the development of more reliable and efficient engine oils, supporting the broader goals of energy efficiency and environmental sustainability in the automotive industry.