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Fuel cells as a source of energy are much more viable using the e-Traction® System.

The current fuel cells are powering geared electric traction systems using many friction producing power transfers. The fuel cell bus used in Amsterdam uses 1 kg of hydrogen for every 4.8 km covered. Were this bus to have been equipped with the e-Traction® System it could cover 19.5 km with the very same kilo of hydrogen.

This improved efficiency would eliminate to a large extend the storage problems currently hampering its development. The "Hydrogen Bus" of Amsterdam can operate only half a day before it needs to go back to its base for a refill. Were this bus to have been equipped with the e-Traction® System it would be able to use a much smaller fuel cell and only half the storage to operate a full days duty cycle.

 

 
GVB Fuel Cell Bus
Mercedes Citaro-E
e-Traction®
Fuel Cell Bus
Standard Diesel Bus GVB Amsterdam
Fuel consumption
41 kg H2 in 200 km
10,43kg H2 in 200km
1 l Diesel in 2 km
Fuel consumption (per km)
0,205 kg/km
0,05 kg/km
0,5 l/km
Full Tank Range
Half a Day
Two Days
One Day
Fuel Energy density
Hydrogen = 120 MJ/kg
Hydrogen = 120MJ/kg
Diesel = 36 MJ/l
Energy consumption (MJ/km)
0,205*120 = 24,6 MJ/km
0,05*120 = 6 MJ/km
0,5*36 = 18,0 MJ/km

 

 

 

 

 

 

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Last modified: June 12, 2007