There was at least one person here attempting to code a steam engine, though a more simplified version that would just consume wood and water as fuel. I don’t see anything about it on the forum nor in pull requests, so the idea was probably dropped.
I like the general idea, because this sounds like one of those things you’d reproduce quickly after the world died, but I know nothing about automobile steam engines (only few bits about the huge, ultra-bulky power plant ones).
If someone did the necessary research and listed it in a readable format, I could help or even write it myself.
I’m looking for things like:
[ul][li]How to feed the boiler: automatic system or having a tar-covered man shovel in broken planks? How often?[/li]
[li]Water (or any other working fluid) use and reuse: open or closed system? Clean water or any water? How much water used?[/li]
[li]How to regulate output: some sort of super/turbocharger increasing/limiting oxygen input?[/li]
[li]How to clean it after usage? Can it work as a continuous process?[/li]
[li]Heating up: do the mechanics (other than power output) change before it gets ready to use?[/li][/ul]
Also, DYI solutions much preferred and nothing that requires an actual factory. When in doubt, assume that most of the technology in the game is like it is now in real life, rather than human-shaped robots running on energy provided by internal thorium reactors.
Some of the ideas can (and possibly should) be simplified, but realism is a bonus.
As for wood gasification, it looks like it would play less nicely with the current system than steam engines. The whole heating up with different fuel and re-using existing engines but limiting their output. I may be misreading things, but I think steam engines would be better here.
But again, I know next to nothing about wood gasification.
I’d say one or the other, because their in-game effect is pretty much identical (push wood, acquire torque).