siemens.com Electric for Solution for sustainable passenger transport

The first fully-electric bus worldwide Technical data So far, only prototypes of electric have been in service Total weight 20,400 kg at airports all over the world. Siemens, in cooperation Tare weight 12,000 kg with Caetanobus Portugal, developed for COBUS INDUSTRIES a solution to upgrade diesel buses with a complete e-drive Length / height 13,900 mm / 3,100 mm and to operate these trend-setting vehicles at the airport. Width 2,700 or 3,000 mm This innovative concept of the COBUS 2700/3000 and the Passenger capacity max. 112 drive technology from Siemens guarantee high availability, Batteries LFP (lithium ferrophosphate), 75% reduction of energy costs compared to diesel or gas- min. 85 kWh capacity driven buses, minimum maintenance, emission-free oper- Engine Permanent magnet ation and attractive design of the interior for perfect synchronous­ motor, ­passenger comfort. ­rated power 160 kW Inverter DC-AC IGBT Inverter All in all, the financial benefits of energy savings and retrofitting existing diesel buses with a complete e-drive Charger (on-board) AC 3 phase 400 V to DC 700 V, output power 14 kW offering a lifetime of more than 12 years, supported by the service concepts of COBUS INDUSTRIES and Siemens, Charger (off-board) DC 700 V, output power 30 kW or 60 kW result in a perfect solution for airport operators. Charging times 2–3 hours (off-board charger) Performance up to 50 km/h Brakes Regenerative braking system The concept: The interior: Emission-free Accessible without steps Using the latest energy storage technolo- The interior of the electric bus meets gies, it is now possible to accumulate the high standard of an airport bus and electricity so effciently that it can be used offers space for max. 112 PAX incl. up in vehicles for transportation on airports. to 14 seats.

The combination of effcient energy The drive technology: Electric engine ­storage, proven powertrain and powerful with energy recuperation charger allowed Siemens to develop, Siemens is responsible for the supply of ­together with Caetanobus, a bus concept the modern drive technology. The core that will be the future at airports, com- of the system is the water-cooled electric bining essential features such as: high drive engine. Whereas conventional diesel passenger comfort, based on the proven engines have an effciency of approx. COBUS 2700/3000 airport buses, low- 25%, this three-phase engine achieves noise, zero-emission and odourless. approx. 90%.

The design: The engine with a rating of 160 kW is Low-floor bus with kneeling system equipped with a Siemens IGBT Inverter. The electric bus is a low-floor airport All components are monitored by a bus with a floor height of approx. flexible interface management that com- 280 –290 mm so that the bus can be municates with the on-board control unit. ­entered from the ground easily. The pneumatic ”kneeling system” assures that The energy storage system: passengers of any age group are guaran- Reliable and safe teed a safe and comfortable step height The most suitable batteries at present are making both entering and exiting a short batteries with LFP (lithium ferrophos- time process. The bus offers three extra phate) cells. The electric bus is equipped wide passenger doors on each side, with 4 battery packs located­ on the roof equipped with safety devices that guar- top for which two ­capacities can be antee protection of the passengers. The ­chosen, and a minimum capacity of chassis is the proven ­COBUS 2700/3000 85 kWh is recommended. A reliable design, already built for more than 3,000 ­battery management system is provided buses in 30 years. Highly corrosion resis- to control the batteries and to monitor tant materials are used for the exterior battery temperature and voltage. bodywork.

2 The charging system: Electric bus based on proven technology Charging with high and low power The batteries can be charged with the ■■ Fully electric design ­on-board charger in which a wallbox ■■ Highly efficient power ­provides the connection to the grid. The ■■ Latest battery technology DC off-board charger allows loading the ■■ Local Emission-free (CO2) batteries by 100% within 2–3 hours, ■■ Low-noise – odourless ­depending on the battery capacity and ■■ Reduced maintenance costs the charger power chosen. The HMI ■■ Low-floor bus with kneeling function ­(display) of the charger can be configured ■■ Comfortable interior according to the needs of the operator. ■■ Easy and fast access for passengers ■■ Financial benefits through energy savings The brake system: ■■ Worldwide partners COBUS INDUSTRIES and Siemens Energy recovery when braking ■■ Life time of 12 years minimum The brake system is controlled by two ■■ Financing options on request separate, independent circuits. Moreover, the brake system is designed as a regen- erative system – as soon as the driver slows down, the first stage of energy ­recuperation is activated and the engine acts as a generator.

The service concept: Minimum costs and high availability The combination of proven bus compo- nents already applied to in thousands of other systems and high quality technology assures a minimum of costs for mainte- nance and a high availability of the fleet. During design process, particular atten- tion was paid to ensuring easy access to all relevant parts. Cleaning work can also be done in the usual manner.

3 Siemens AG © Siemens AG 2013 The information in this document Infrastructure & Cities Sector Printed in Germany contains general descriptions of Rail Systems Division TH 325-131010 DB 11131.5 the technical options available, which do not always have to be Nonnendammallee 101 Dispo 21720 c4bs 1469 present in individual cases. The 13629 Berlin, Germany Order No.: A19100-V520-B891-X-7600 required features should therefore [email protected] be specified in each individual case at the time of closing the contract. www.siemens.com