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It was used to fuel their steam engines, which was their method of locomotion back then.
Steam engines (trains) evolved in to diesel and then electric. Steam engines like beam engines gave way to massive turbines many fueled by electric and other fossil fuel
Locomotives use diesel engines thus run on diesel fuel, they do not use gasoline.
Yes. Bigger engines waste more fuel because it take more fuel to make them run.
Coal is still used in many steam engines today. Coal is not used on diesel trains or electric trains simply because it is not fuel for them. Electric trains and diesel trains are the most common trains in use, and not trains capable of using coal, because they are more efficent and much less costly to maintain.
I would think that most trains run on coal but I'm not sure I'll have to check on that. -- Most trains run on diesel fuel these days. In the early days, trains ran on coal or wood to fuel the boilers. Today they have diesel engines that turn generators that power electric motors to drive the wheels. Quite a few trains also run on electricity provided by either a third rail or overhead cables.
They don't ... they're electric locomotives.
They burn solid fuel in a small enclosed chamber with a shaped nozzle, or two kinds of liquid fuel that are lit in a small chamber.
Oil fuel mix ratio is different for different engines, please contact the manufacturer Fuel air mixture is the same @ 17 to 1 by weight.
External Combustion engine is an engine in which combustion of fuel takes place outside the cylinder. e.g.Coal fired steam engines in trains
The fuel used for both four stroke and two stroke engines is the same: gasoline. Two stroke engines require a small amount of two stroke oil be added to the fuel.
The main fuel IS diesel fuel for both both trains and ships, most freight trains run on electric motors that are powered in most cases by diesel engined generators, while passenger trains are powered by diesel, or directly from an overhead power line, or electrified rail. Trains of course used to be powered by steam, fired by wood or coal. old sailing ships obviously used to be powered by wind and/or manpower. Later they were powered by steam, usually coal fired, and then by diesel fuel.