Question by Ryan_1770: Question about trains: Electro-diesel / Diesel-electric?
Are electro-diesel and diesel-electric trains the same thing, or two different types of trains? Going by the names at first I figured they where just two different ways of saying the same thing, but then I saw a section about diesel-electric trains and a separate section about electro-diesel trains on a locomotive’s page on Wikipedia, so now I am not completely certain; although aside from this page, when searching for diesel-electric trains I have found several pages that explain how they run, while I have been able to find next to no information about how electro-diesel trains run, assuming they are in fact two different types of trains. So are they just two different ways of describing the same type of train, or two different types of trains?
Answer by HOGHEAD
I have never heard the term “electro-diesel,” although UP has recently put into service new technology switcher hybrids that are battery powered when not running off the juice provided by the prime mover and main alternator, which also recharges the batteries when it is in use.
I’m not sure, as I only found out about it a week or two ago, but this may be an “electro-diesel.” Sounds logical to me, anyway.
On the other hand, there are hybrids that are electric, powered by the third rail or overhead catenary transmission systems, that are also diesel electric. I think this more likely to be dubbed an “electro-diesel.”
Wikipedia is always there, but it ain’t always right.
What do you think? Answer below!