Highlights Comparative test to assess the effect of Low Viscosity Oils on buses CO2 emission. 39 buses involved. Each bus reached an average mileage of 60,000km. At 30,000km the CO2 emission were reduced from 1Ton to 2Ton per bus. Fuel consumption was reduced from 1% to 4% depending on engine and oil parameters.
Abstract This paper shows the results of a comparative fleet test the main objective of which was to measure the influence of Low Viscosity Oils (LVO) over the fuel consumption and CO2 emissions of urban buses. To perform this test, 39 urban buses, classified into candidate and reference groups depending on the engine oil viscosity, covered a 60,000km mileage corresponding to two rounds of standard Oil Drain Interval (ODI). In the same way, for 9 buses of the 39 buses, the effect of differential LVO over fuel consumption and their interaction with engine LVO was assessed during the second ODI. Test results confirm that the use of LVO could reduce fuel consumption, hence CO2 emissions. However, special attention should be taken prior to its implementation in a fleet, particularly if the vehicles are powered by engines with high mechanical and thermal stresses during vehicle operation because this could lead to friction loss increase, loss of the potential fuel consumption reduction of LVO and, in the worst scenario, higher rates of engine wear.
Potential of low viscosity oils to reduce CO2 emissions and fuel consumption of urban buses fleets
2015-01-01
13 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Potential of low viscosity oils to reduce CO2 emissions and fuel consumption of urban buses fleets
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