Hybrid Railway Engines

Jeffrey Arulraj · 2013-11-02T02:52:17+00:00

Guys this is new to me in many areas But I am sure you guys can help me out in understanding all these concepts In case of Hybrid Engines there are two fuels used in the engine one is Diesel and the other fuel is Electric power fed directly from the traction lines. But as I was talking to some Mechanical experts they said Unless you have seperate isolation circuits which can permit us to completely seperate the engine from diesel power and electric power source. This hybrid engine will not work effectivelyHe also said Something like coupling has to be used. This coupling must switch between Electric power and Diesel power. Can you explain Why we must use such coupling? And what will happen if simulataneously both the power sources are used? But some countries are using the hybrid engines how do they bring about this change?

Hybrid Railway Engines

Jeffrey Arulraj
@jeffrey-xA7lUP

Updated: Oct 24, 2024

Views: 1.2K

Guys this is new to me in many areas But I am sure you guys can help me out in understanding all these concepts

In case of Hybrid Engines there are two fuels used in the engine one is Diesel and the other fuel is Electric power fed directly from the traction lines.

But as I was talking to some Mechanical experts they said
Unless you have seperate isolation circuits which can permit us to completely seperate the engine from diesel power and electric power source. This hybrid engine will not work effectively
He also said Something like coupling has to be used. This coupling must switch between Electric power and Diesel power. Can you explain Why we must use such coupling? And what will happen if simulataneously both the power sources are used? But some countries are using the hybrid engines how do they bring about this change?

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Ramani Aswath

Member • Nov 2, 2013

As far as I know Diesel Locos also run on electricity. The diesel engine is coupled to a generator whose output drives the electric motors.
However, to reduce line transmission losses electric locos use high voltage motors to reduce current. Diesel generators are on board. Hence the motors can be of lower voltage.

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Jeffrey Arulraj

Member • Nov 2, 2013

Sir yeah I know That Engines generates electric power for driving the trains

But I am of question can both direct electric power from traction lines and Diesel power can be used in the same engine

Is this mechanism possible in a single engine? That is what puzzles me a lot.

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Ramani Aswath

Member • Nov 2, 2013

If the voltage is the same or if there is a suitable voltage conditioner on board then there should be no problem

Here is some info on a different kind of hybrid locomotives:
<a href="https://en.wikipedia.org/wiki/Hybrid_train" target="_blank" rel="nofollow noopener noreferrer">Hybrid Train</a>
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