The Influence of Biodiesel Fuels on Lubricity of Passenger Car Diesel Engine Oils

Abstract

The present paper mainly focuses on the physical and chemical impact of currently used and future biodiesel components on the performance of a typical low-sulphated-ash-phosphorus-sulphur (low SAPS) passenger car engine oil. Beside a current fatty acid methyl ester (FAME), a next generation hydrotreated vegetable oil (HVO) is also investigated as a biogenic fuel blend component. In a representative modern 4-cylinder diesel engine test runs with different biodiesel containing fuels were combined with diesel particulate filter regeneration to reach high loads and stresses on the engine oil. The samples of used engine oils were characterised and compared after the engine test runs.