Dual-mode Locomotives: The Railways’ Future

Dual-mode Locomotives: The Railways’ Future

Virtually everyone used the train, which is the only means to travel long distances in certain countries, such as India. You may have observed that the train’s locomotive is either diesel or electric. But did you know that another type of locomotive has both a diesel and an electric engine?

Hi and thank you for visiting Engineering Master. In this essay, we will go over all there is to know about a Dual Mode locomotive or electro-diesel locomotive, which is a rail locomotive that is a combination of an electric and a diesel engine.

Dual-mode Locomotives

There are two types of locomotives used on railways. There are two types of locomotives: diesel locomotives and electric locomotives. Diesel locomotives are utilized practically everywhere since they generate their own electricity. Electric locomotives, on the other hand, receive power from overhead cables via pantograph and process the power to power the locomotive. As we all know, it is impossible to install overhead cables everywhere (eg. in desert and mountain areas). Many lines with no overhead cables require railways to switch from electric to diesel locomotives. It takes a long time and a lot of effort.

To address this issue, a third type of rail engine was designed (known as dual mode locomotive). They are essentially a modified diesel locomotives with a pantograph on one side and a diesel generator on the other.

For a better understanding, please read our prior articles on diesel locomotives and electric locomotives.

The electricity required to run a diesel locomotive is generated within the locomotive. External sources of power are not used. In the case of an electric locomotive, however, power is received from overhead cables via the pantograph. The collected electricity is converted and rectified, and so drives the traction motors. Dual mode locomotives operate one engine at a time since it is difficult to run both engines simultaneously because few components are shared by both.

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Because both electric and diesel engines are housed inside a locomotive, it becomes quite hefty. To reduce weight, a few changes are made to the locomotive, such as the use of stainless steel, a limited capacity diesel tank, and so on.

Dual mode locomotives are manufactured by locomotive manufacturers across the world, including Siemens, ABB, and Bombardier, and are now in use in Africa, Europe, and North America. It is expected to be operational by 2019.

It has several advantages, which is why it is used in so many different fields. It covers things like lowering locomotive and rake detention time at traction change locations, needing fewer employees, and being handy when overhead wires are broken due to natural catastrophes, among other things.

The Research Design and Standards Organization, Indian Railways, and the iGyankosh YouTube channel are all credited with the material.


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