Editing The Engine (section)

==Technology==
As mentioned previously, the Engine is using a hydrogen perpetual motion technology with energy siphoned to provide electricity, waste heat is also distributed throughout the train. A series of ports, intakes snow to be converted to hydrogen, it's offshoot water supplies water for the train. The average speed of the train appears to be around 170km/h or 106mph. While perpetual in motion, the maximum speed of the train is 200km/h<ref name=":0" />. While moving through the mountainous Yukon Territory, the Engine was using all of its power to move the train, and little to no energy was left to provide the electricity, as such, the train had to use its onboard batteries.

[[File:WilfordSignature.png|thumb|265x265px|Mr. Wilford's signature on the blueprint.]]
When [[Javier De La Torre]] suggested slowing down, as such at its current speed ''Snowpiercer'' was causing numerous avalanches, [[Melanie Cavill]] notes that she cannot allow that, as it would cause blackouts. After the train was hit by Class 3 avalanche, ''Snowpiercer'' slowed by 12%, which caused numerous blackouts as the batteries were already nearly depleted. The train also has a "dead-minimum speed" at which it can run; but if the engine slows down any further, its possible the perpetual motion Engine would cut off as it cannot produce sufficient electricity at very low speeds. From on-screen evidence, this appears to be around 40km/h.

As later revealed by Melanie and [[Miles]], the train's speed becomes a tiny bit slower with each revolution (after 8 years, it is 22 hours off from average in ''[[These Are His Revolutions]]'') and it is on the Engineers to reverse that "because if ''Snowpiercer'' stops, we all die." Also according to [[Bennett Knox]], while the engine is perpetual its parts are not, they will eventually wear out and require replacing.

Stopping the train for short periods appears to be possible as the train was halted by ''[[Big Alice]]'' twice (in [[994 Cars Long]] & [[The Time of Two Engines]]). Also [[Alexandra Cavill]] told ''Snowpiercer'', they have 13 minutes to surrender before the cold overcomes and they all freeze to death. When stopped, the train remains powered on its on-board batteries. But with less cars connected, this time appears to be much longer. When the Eternal Engine was only powering the 10-car Pirate Train, they have stopped for at least half an hour, waiting for Ben and Josie to return. (We know that because Ben and Josie had 30 minutes of power in their suits, meaning they had to return after that. Actually they have stopped for more than 30 minutes because Josie went outside to rescue Ben.). The engine could provide some degree of power to the cars even while being stationary, although it heated up severely due to the lack of ability to vent excess heat, and had to do venting runs.

The Engine server room contains two levels, accessible with a ladder and two doors at either end of the lower level. The Wilford Industries Digital Automation System (The Engine's brain), is capable of sending and receiving thousands of messages per second and contains a Self Regulating Harmonic Module (The God Module). The God Module is responsible for hydrogen production which powers the Engine. It was damaged by [[Icy Bob]] on the order of Wilford in [[The Eternal Engineer]] resulting in severe flooding and Snowpiercer venting water after a railroad spike was jammed into the vent. Both jamming the vent open, and damaging the component of The God Module connected to the vent. This would lead to Wilford taking control of Snowpiercer, as he was the only person who knew how to fix the problem. 

After being disconnected from the main train to power the much smaller [[Pirate Train]], the Engine began running hot and was referred to by [[Bennett Knox]] as now being a '''Ferrari''<nowiki/>', by [[Alexandra Cavill]] as a '''jet engine strapped to a toy wagon''<nowiki/>' and by [[Sykes]] as a '''bullet train sauna''<nowiki/>'. In addition, it is capable of coming to a full stop and then moving again with the issue being how much energy it could store before it was vented and running the risk of meltdown, forcing the Engine to depart and return at a later time, which they called a venting run. The full length ''Snowpiercer'' on the other hand had the opposite problem, it could only stop for a few minutes before the electrical drain of sustaining heating throughout the train meant there wasn't enough power to regain power to start moving again. While powering the Pirate Train, the Engine is capable of pushing the train in reverse, something never seen previously with the much-larger ''Snowpiercer''.

''Big Alice'' is stated to have more torque than ''Snowpiercer's'' engine, and it also has short-time turbo-boosting capabilities which the eternal engine lacks, meaning it would win in a tug of war and if it applied its brakes then ''Snowpiercer'' would be unable to overcome the resistance and move, however while ''Big Alice'' was capable of pushing ''Snowpiercer'' on its own it was unable to achieve the same top speed or to keep all the carriages powered meaning first class had to be temporarily decommissioned and the temperatures in most of the rest of the trains carriages were below freezing. During a game of cat and mouse with the low power ''Big Alice'', ''Snowpiercer's'' Engine was able to send the other train, all 1,023 cars of it, rolling back down the track simply by bumping it when the Engine had the high ground and ''Big Alice'' was "tapped out."