2019 Mercedes Citaro Full Electric
With its range of low-emission and, going forward, locally emission-free city buses, Mercedes-Benz provides the answers in the quest for environmentally friendly local public transport. All of them are based on the best-selling Citaro, which in 2012 became the first city bus in the world to meet what is currently the most stringent emissions standard, Euro VI. The Citaro hybrid, with even further reduced fuel consumption, is formally classified as a low-emission bus. The gas-powered Citaro NGT is practically CO2-neutral when run on bio natural gas. The all-electric Citaro is now taking the next step from low-emission bus to locally emission-free bus.
The basis of its drive system is provided by an electric portal axle with electric motors at the wheel hubs. The peak output of the motors is 2 x 125 kW, while torque is 2 x 485 Nm. It is an inherent feature of such motors that this is fully available right from the start, so ensuring appropriate dynamic performance even with a full complement of passengers.
Lithium-ion batteries with a total capacity of up to about 243 kWh are responsible for providing the power. These are split between up to a maximum of ten modules. As well as two battery modules on the roof, the standard equipment includes four modules in the rear of the bus. Depending upon customer requirements, a further two or four battery modules may be mounted on the roof.
The charging technology used is similarly flexible. For the start of series production, charging via a Combo 2 connector is envisaged. If, in order to extend the range of the vehicle, there is a requirement for opportunity charging, there will in future also be an option to charge the Citaro via a pantograph. The Citaro thus allows for all variants currently in use.
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