MUNICH, Germany Automotive OEM Daimler AG (Stuttgart, Germany) has announced a bus which runs on energy produced by fuel cells. At the same time, the concept includes elements of energy recuperation.
The Citaro FuelCell Hybrid bus is an all-electrical vehicle that several innovative elements in its powertrain. Basically, the electricity necessary to run the bus is generated by a fuel cell array. The vehicle has not one motor but four implemented as hub motors. Thus, the motors work as generators when the driver pushes the brake. The electrical energy is buffered in a lithium ion battery; according to Daimler it is enough to drive the bus over short distances off the battery. The architecture includes all electric and electronic ancillary devices necessary for such a design, a company spokesperson said.
The main benefit of the vehicle is that it produces zero emissions no internal combustion engine, no exhaust gases. In addition, its operation also produces very low noise.
Daimler plans to build a number of prototypes to gather fleet experience with the bus; the spokesperson said the number will be in the double digits.