DAIMLER DEPLOYS CITARO FUEL CELL BUSES IN HAMBURG

摘要

Hamburger Hochbahn AG has deployed the first two of four Mercedes-Benz Citaro FuelCELL Hybrids under the German NaBuZ Demo project. Three more buses will follow next year. The Citaro FuelCELL Hybrid features a number of key innovations compared to the fuel cell buses that went into trial operation in Hamburg in 2003, including the following: 1. Hybridization with energy recovery and storage in lithium ion batteries 2. Electric motors installed in the wheel hubs offering a continuous output of 120 kilowatts (kW) 3. Electrified auxiliary units 4. More advanced fuel cell stacks The new fuel cell stacks are designed for an extended service life of at least six years or 12,000 operating hours. They are identical to those of the Mercedes-Benz B-Class FCELL passenger car, which is also being deployed in test fleets by customers in Hamburg. As on the earlier fuel cell buses, the two stacks are installed on the vehicle's roof, but they are now accompanied by the lithium ion battery pack. With the electric power from this energy accumulator, the new Citaro FuelCELL Hybrid is able to run for several kilometers (km) on battery power alone.