A new modern steam locomotive is being built, which has modifications with respect to the previous ones. These changes were made to optimize performance.
Some changes that were made are the following:
Direct steam injection with a fluid exhaust.
Distribution valves with more rings and more lighter material, also in the piston.
Installation of a modern boiler for better steam generation.
The hand brake system was modified to be more efficient.
Hand control inside the locomotive was improved.
The steam verification and control system inside the boiler was improved.
The entry into the firebox was improved to achieve greater circulation.