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Originally Posted by ElectricTroy
If gasoline-to-hydrogen-to-electricity-to-wheels is more efficient, than sure, go for it. But is there another possibility? I wonder if *their* design is more efficient than a diesel-electric hybrid?
I doubt it.
Diesel-electrics average 45-50% efficiency whereas *their* gasoline-hydrogen-electric design only averages 40%.
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maybe...
maybe not....
When tested on the NEDC cycle (1580 kg vehicle) the Nuvera system showed a net total of ~54% efficiency.
http://www.nuvera.com/products/hdl82.php#f
No diesel , hybrid or not, have I seen tested that has been able to show as high as a ~54% efficiency on a driving cycle.
If you know of any please site the source.
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This idea still has allot of potential.
Combustion engines like diesel engines are thermodynamically limited to ~60% efficiency.
Fuel Cells are only thermodynamically limited to ~83% efficiency.
Both system can benefit from a hybrid drive train.
The Fuel cell having fewer moving parts will require less maintenance.
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As already said the better system is the pure EV which eliminates the losses of making the hydrogen.... but if you need a transition system to Hydrogen... I think this is a good way to do it.
