Selected physicochemical properties of water-fuel microemulsion as an alternative fuel for diesel engine

Abstract

The paper focuses on the assessment of selected physicochemical properties of microemulsion containing 5% by mass (m/m) of surface active compounds (SAC), i.e. Span20 and Crilet4 as well as 10 % (m/m) of distilled water dispersed in diesel fuel (DF). In particular temperature dependent properties such as: flash point (FP) and cold filter plugging point (CFPP) as well as lubricity, friction coefficient, corrosiveness and kinematic viscosity of tested fuels were examined. It was found that the tested surfactants and water added to DF increase microemulsion FP by 13 ºC. For this reason, it can be stated that tested microemulsion is safer than typical DF. On the other hand it was found that the CFPP of the tested microemulsion is also adequately higher. It means less usefulness of such fuel during winter periods. Based on the research results it can be stated that addition of tested surfactants slightly worsens the lubricity of DF. However, the same surfactants in the presence of dispersed water reduce the friction in the tribological node and improve the lubricity of the tested microemulsion. Research showed that tested microemulsion system is not corrosive as well as its kinematic viscosity meet requirements of EN590 standard. Based on all these findings, microemulsion is considered as safe and such fuel can be recommended for engine tests without the risk of its damage.

Testing of lubricating properties of mixtures of diesel and RME biofuels with the addition of linoleic acid

“…Górska et al [11] studied selected physicochemical properties of microemulsions and fuel additives (diesel oil). In particular temperature dependent properties such as: flash point (FP) and cold filter plugging point (CFPP) as well as lubricity, friction coefficient, corrosiveness and kinematic viscosity of tested fuels were examined [11].…”

“…Górska et al [11] studied selected physicochemical properties of microemulsions and fuel additives (diesel oil). In particular temperature dependent properties such as: flash point (FP) and cold filter plugging point (CFPP) as well as lubricity, friction coefficient, corrosiveness and kinematic viscosity of tested fuels were examined [11]. Studies have shown that the tested microemulsion system is not corrosive, kinematic viscosity meets the requirements of the EN590 standard, and such fuel can be recommended for testing the engine without risk of damage.…”

Research on low-emission vehicle powered by LPG using innovative hardware and software

“…Most often, LPG, CNG and hydrogen are used as additional fuel for diesel [19]. In order to obtain lower fuel consumption and lower exhaust emissions, new fuel mixtures [13] and new methods of combustion are created [16].…”