CONFERENCE & EXHIBITION

Reduction of engine lubricant viscosity has a direct influence in decreasing engine friction. Therefore, the shift to low-viscosity grade lubricant contributes to limiting CO2 emissions. These ultra-low viscosity lubricants might require the introduction of low-viscosity base oils. It is essential to evaluate the impact of high volatility components on oil consumption and estimate the impact on oil drain intervals. In this study, a series of 0W-8 to 0W-20 prototype engine oils has been evaluated on a downsized turbocharged direct injection gasoline engine. Oil emission and particle emission were measured. The impact of formulation and lubricant properties was explored. Engine oil with Noack volatility greater than 30% exhibited no increase in oil emission or particle emission for most operating points.

Impact of Engine Oil Volatility on Oil Consumption and Emissions

David Senard | Engine Lubricants R&D Engineer, Research Division – Passenger Vehicle Lubricant, TotalEnergies OneTech

Reduction of engine lubricant viscosity has a direct influence in decreasing engine friction. Therefore, the shift to low-viscosity grade lubricant contributes to limiting CO2 emissions. These ultra-low viscosity lubricants might require the introduction of low-viscosity base oils. It is essential to evaluate the impact of high volatility components on oil consumption and estimate the impact on oil drain intervals.

In this study, a series of 0W-8 to 0W-20 prototype engine oils has been evaluated on a downsized turbocharged direct injection gasoline engine. Oil emission and particle emission were measured. The impact of formulation and lubricant properties was explored. Engine oil with Noack volatility greater than 30% exhibited no increase in oil emission or particle emission for most operating points.

David-Senard

ABOUT THE AUTHOR

Key Qualifications Diesel engine combustion design (performances, consumption, emissions) Fuels engine and vehicle testing (fuel economy, pollutant reduction, oxidation stability, cold operability, mileage accumulation) European commission advocacy for paraffinic fuels Internal combustion engine lubricant and electric motor fluid formulation Education Engineering Degree, Fluid Mechanics and Energy, Polytech’Nancy, France, 2007 Technological University Degree, Mechanics and Production, IUT Reims, France, 2004 Work Experience 2019-Present, Research Engineer, TotalEnergies OneTech – Lubricant formulation 2011-2019, Research Engineer, TotalEnergies MS - Engine and vehicle testing 2007-2011, Consulting Engineer, Matis Technologies for Stellantis Group, Euro 6 Diesel engine combustion design