|The Scania-based E95 bus in São Paolo.|
São Paulo, Brazil’s Sistema Metropolitano de Transporte (Metra—Metropolitan Transport System), has put into operation the first Scania-based E95 ethanol bus it will test as one element of Brazil’s two-part involvement in the BioEthanol for Sustainable Transport (BEST) project. (Earlier post.)
Scania delivered the bus chassis in May 2007; the bus was completed in Brazil. The Scania ethanol bus uses 95% ethanol with 5% ignition improver in a modified diesel engine, the third-generation variant of the E95 application. Scania has raised the compression ratio from 18:1 to 28:1, added larger fuel injection nozzles, and altered the injection timing.
The E95 engine delivers 269 kW (230 hp), has the same thermal efficiency as a regular diesel engine and is certified for both Euro 5 and EEV standards.
The trial is being co-ordinated by biofuel experts at the Brazilian Reference Centre on Biomass (CENBIO), which is linked to the University of São Paulo.
The aim of the BEST project is to support the large-scale use of ethanol as a vehicle fuel. Trials take are taking place in ten urban areas around the world. Scania is supplying the city buses included in the project. In addition to São Paulo, participating locations include Stockholm, Rotterdam, Dublin, La Spezia (Italy), Madrid, the Basque provinces of Spain and Nanyang (China).
The second element of São Paulo’s BEST participation is the testing and evaluation of three Prius hybrids running on Brazil’s gasoline (which contains 20-25% ethanol). This demonstration fleet is being run by CENBIO and Petrobras. The hybrids are to be operated in regular traffic and user conditions for 2-3 years.