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Two engine lubricant oils were investigated in regard to friction and vehicle performance. The products were a typical high viscosity commercial oil used at the Brazilian market and a low viscosity lubricant containing especial additives and friction modifiers, designed for racing applications. Comparison of the piston system friction was measured using the floating liner engine. Piston/Rings/Liner (PRL) friction was measured in 4 regimes, representative of urban conditions. In average, the low viscosity oil presented 52% lower friction, ranging from - 46% at 1500 rpm/20Nm to -59% at 2500 rpm/20Nm. The lube oils were also tested on a production 4 cyl., 1.4L gasoline engine, brake power gains from 1.9 to 2.7 % were observed with the low viscosity lube oil. The same oils were tested also regarding vehicle acceleration. The low viscosity oil showed from 4.4% reduced acceleration time from 40-60 km/h up to 6.3% from 60-100 km/h.
Two engine lubricant oils were investigated in regard to friction and vehicle performance. The products were a typical high viscosity commercial oil used at the Brazilian market and a low viscosity lubricant containing especial additives and friction modifiers, designed for racing applications. Comparison of the piston system friction was measured using the floating liner engine. Piston/Rings/Liner (PRL) friction was measured in 4 regimes, representative of urban conditions. In average, the low viscosity oil presented 52% lower friction, ranging from - 46% at 1500 rpm/20Nm to -59% at 2500 rpm/20Nm. The lube oils were also tested on a production 4 cyl., 1.4L gasoline engine, brake power gains from 1.9 to 2.7 % were observed with the low viscosity lube oil. The same oils were tested also regarding vehicle acceleration. The low viscosity oil showed from 4.4% reduced acceleration time from 40-60 km/h up to 6.3% from 60-100 km/h.
Palavras-chave
Lubrication; Viscosity
Lubrication; Viscosity
Como citar
Tomanik, Eduardo;
Lastres, Luiz Fernando;
Carvalho, Leonardo de Oliveira.
EVALUATION OF AN EXPERIMENTAL LUBE OIL ON PISTON FRICTION, ENGINE PERFORMANCE AND VEHICLE ACCELERATION
,
p. 536-549.
In: First International Brazil Conference on Tribology TriboBr-2010 and 2nd Internacional Tribology Symposium of IFToMM,
Rio de Janeiro,
2010.
ISSN: -
, DOI 10.5151/5463-5463-17332
