Is there a modern steam engine?

There are two technologies that separate modern steam locomotives from traditional locomotives: the implementation of the Gas Producer Combustion System (GPCS) in place of conventional steam locomotive combustion (which works in tandem with a high efficiency exhaust) and the use of a modern and much more effective ...



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Steam engines CAN be more powerful than diesels. Steam engine have been built with 7000–8000 hp. They tend to be very heavy and very complicated with multiple driving axle articulated trucks.

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  • A steam engine is huge and heavy. ...
  • Steam engine has low efficiency.
  • Steam engine does not start at once.
  • Before a steam engine can start, one has to build a coal fire to get steam which takes a long time.


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Diesel engines are much more efficient than steam engines, but the combustion in the steam engine's firebox can be more carefully controlled and, so, possibly produce less of the types of pollution caused by imperfect combustion.

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Air pollution Steam trains were indeed faster than wagons, and steam ships faster and stronger than sailing ships. But the smoke they sent into the air polluted the air. Then diesel and electric trains came, and they were somewhat cleaner.

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Darker or blacker smoke is an indication that small fuel particles (coal, wood, fuel oil, etc.) have made it through the firebox unburned and are therefore wasted. Light or nearly invisible exhaust means that the locomotive fuel is mostly burned and transformed into heat, carbon dioxide, water, and trace elements.

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