The paper presents the results of thermogravimetric tests of engine oil used in a small turbocharged spark-ignition engine. The main observation from the research was a significant soot contamination of engine oil, that appears even at its low mileage. This indicates that also in the case of port fuel injection spark-ignition engine, high particulate matter emissions may occur. It may therefore turn out that the small city car can be more harmful to the environment than much larger vehicles. A rapid soot contamination of the oil in this engine indicates as well that the oil change interval should be shortened.
Castrol MAGNATEC Stop-Start 5W-30 A3/B4.
DELPHI Technologies. 2019-2020 Worldwide emissions standards – passenger cars and light duty vehicles.
DESHMUKH, P. Soot content determination of in-service lubricants of diesel engine as per ASTM D5967 Annex A4. Perkin Elmer Application Note – Thermal Analysis.
GAUTAM, M., CHITOOR, K., DURBHA, M. et al. Effect of diesel soot contaminated oil on engine wear — investigation of novel oil formulations. Tribology International. 1999, 32(12), 687-699.
GEORGE, S., BALLA, S., GAUTAM, M. Effect of diesel soot contaminated oil on engine wear. Wear. 2007, 262(9-10), 1113-1122.
KOZAK, M. A comparison of thermogravimetric character-istics of fresh and used engine oils. Combustion Engines. 2019, 178(3), 289-292.
LIANG, B., GE, Y., TAN, J. et al. Comparison of PM emis-sions from a gasoline direct injected (GDI) vehicle and a port fuel injected (PFI) vehicle measured by electrical low pressure impactor (ELPI) with two fuels: Gasoline and M15 methanol gasoline. Journal of Aerosol Science. 2013, 57, 22-31.
NATIONAL RESEARCH COUNCIL. Assessment of fuel economy technologies for light-duty vehicles. The National Academies Press, Washington, DC. 2011.
REITZ, R. Grand challenges in engine and automotive engineering. Frontiers in Mechanical Engineering. 2015, 1, 1-3.
SATPUTE, Y. Estimation of soot content in engine oil using Thermo Gravimetric Analysis (TGA) as per ASTM D5967 Method. Perkin Elmer Application Note – Thermal Petro.
SCHEEPERS, P.T.J., BOS, R.P. Combustion of diesel fuel from a toxicological perspective. International Archives of Occupational and Environmental Health. 1992, 64, 149-161.
SKOCZYLAS, W. Thermogravimetric analysis in automotive industry research (in Polish). BSc Thesis, 2019, Faculty of Transport Engineering, Poznan University of Technology.