The Anonymous Widower

A Hydrogen-Electric Class 99 Locomotive

In GB Railfreight Plans Order For Future-Proofed Bi-Mode Locomotives, I introduced the Class 99 locomotive, for which the first order was announced by Stadler and GB Railfreight yesterday.

This was the start of that post, which I wrote in early March 2022.

The title of this post, is the same as that of this article on Railway Gazette.

This is the introductory paragraph.

GB Railfreight is planning to order a fleet of main line electro-diesel locomotives with a modular design which would facilitate future replacement of the diesel engine with a battery or hydrogen fuel cell module.

In this post, I will look at the design of a Class 99 locomotive running on hydrogen.

These are my thoughts.

Using Hydrogen Fuel Cells

The Railway Gazette article suggests that hydrogen fuel-cells will be used to create a hydrogen-electric Class 99 locomotive.

A typical hydrogen fuel-cell transmission will have the following elements, which will replace the diesel-electric generator.

  • A hydrogen fuel tank
  • A appropriately-sized hydrogen fuel-cell which generates electricity from hydrogen.
  • A battery to store electricity.
  • Regenerative braking will also be used to charge the battery.
  • The locomotive will have an electric transmission.

The various components will be fitted into the space, that was occupied by the diesel engine.

This Alstom video promotes the Alstom Coradia iLint and explains how it works.

Most hydrogen fuel-cell trains and trucks , work as the train does in this video.

Using A Reciprocating Engine Running On Hydrogen

This press release from Caterpillar is entitled Caterpillar to Expand Hydrogen-Powered Solutions to Customers.

It describes how Caterpillar will develop versions of their reciprocating engines, that will run on 100 % hydrogen.

This would be an alternative way of developing a zero-carbon Class 99 locomotive.

Note that Cummins, JCB and Rolls-Royce mtu have also converted diesel engines to run on hydrogen.

This method of conversion has advantages.

April 30, 2022 Posted by | Hydrogen, Transport/Travel | , , , , , | 5 Comments