EFFECT OF ADDITIVES ON PISTON CLEANLINESS AND ENERGY REDUCTION PERFORMANCE OF SP/GF-6 ENGINE OIL

Abstract

Abstract: X-ray photoelectron spectroscopy and NMR were used to study the composition of old oil and piston deposits in SP/GF-6 gasoline engine oil after high-temperature anti-oxidation engine testing sequence ⅢH. The results showed that piston deposits mainly contained sulfated ash of engine oil in addition to carbon deposits. The influence of functional additive combinations on piston deposits was studied and summarized. Based on the antioxidant properties of old oil and the composition of piston deposits, the optimization of oil formulation technology were guided. MTM was used to study the wear reduction and durability performance of the fuel economy of the oil. The evaluation results of MTM friction test on the energy-saving performance of new and aged engine oil can be used as an effective test method to simulate the results of energy-saving engine tests.

Key words: formulation, additive package, SP/GF-6, deposit, antifriction

References

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