EXPERTISE IN ELECTRIC MOBILITY - page 128

127
city Bus of the future
Contact
Harald Ludescher
Phone: +49 7940 16 95002
Mobile: +49 151 4260 8516
Ziehl-Abegg (Künzelsau) with more than 100
years of experience in building electric motors
has become an established market leader. Until
now, Ziehl-Abegg motors could be found in
elevators, fans and in special purpose vehicles. It
has always been our goal to reduce energy con-
sumption, minimise noise and build durable and
reliable high-quality motors.
For the forward-looking concept of the in-wheel
hub drive system, Ziehl-Abegg uses its expertise
as technology leader in the development of elec-
tric motors – targeting maximum performance
with minimum power consumption within an
extremely compact design.
Our solution for a city bus to be a serially
designed gearless hybrid vehicle (or electric
vehicle with single-wheel drive) is to implement
an electric motor on the basis of a synchronous
motor, with an external rotor, integrated elec-
tronics and water cooling.
Since the synchronous motor with external rotor
(as in-wheel hub drive) operates without a gear-
box or differential, it greatly increases the effi-
ciency of the in-wheel hub drive compared to
conventional gearbox solutions.
Reliable data from measurement values from
long-term field tests examining range extender
buses in operation in the Netherlands and fully
electric buses in Sweden document this effi-
ciency.
Ziehl-Abegg
Heinz-Ziehl-Strasse
74653 Künzelsau, Germany
Year of establishment:
1910
Employees:
3,150 (2012/2013)
Turnover:
EUR 371 million (2012)
Clean and silent through the city – with gearless electric drive
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