Quote:
Originally Posted by jamesqf
Not so. The electric part of a standard diesel-electric locomotive is just a transmission, so calling one a hybrid is like claiming an automatic transmission makes a car a hydraulic hybrid.
There apparently are a few experimental hybrid locomotives used as switching engines. And in some places in Europe (I remember seeing one in Finland some years ago), there are hybrid diesel-electric systems that pull power from overhead wires when available, but run on the diesel engine otherwise.
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Please do some research. start with:
Diesel-electric locomotive engines & how they work
or google for additional information
The diesel electric technology is VERY old however with newer technology such as computer controls they are getting more efficient.