WIT Press


CO2 Emissions Reduction By Using Low Viscosity Oils In Public Urban Bus Fleets

Price

Free (open access)

Paper DOI

10.2495/UT150201

Volume

146

Pages

12

Page Range

255 - 266

Published

2015

Size

1,225 kb

Author(s)

V. Macián, B. Tormos, L. Ramírez, T. Pérez, J. Martínez

Abstract

CO2 emissions and fuel consumption reduction in road transportation has become one of the most relevant concerns either for governments, OEMs and final users, especially fleet owners and managers, led mainly by global warming and rising fuel prices concerns. For vehicles driven by internal combustion engines (ICE) the fuel consumption rates are directly related to CO2 emissions, the latter being a consequence and an efficiency indicator. A wide variety of solutions have arisen to overcome this challenge ranging from hybridization to changes in the vehicle-design looking for more aerodynamic profiles, to solutions like eco-driving courses for drivers or the usage of alternative fuels such as biofuels. All of these solutions vary in technical complexity, implementation costs and terms. One proven cost-effective way to reduce the fuel consumption is the use of low viscosity oils (LVO) in order to reduce the engine inner friction, reducing by this way the amount of energy required to move the engine parts resulting this in a fuel consumption reduction. This paper presents a study where the effect of the use of LVO on urban transport buses on the CO2 fleet spot and fuel consumption, based on a comparative test where 39 buses worked for nearly a year separated in two groups each of them carrying either LVO or standard viscosity oils.

Keywords

CO2 emissions reduction, fuel consumption, urban buses, fleet test