Efficiency and cost. The maintenance of a steam engine can be very costly as compared to a diesel engine as well.
Diesel calls steam engines "Steamies."
Lower efficiency than diesel, and much higher maintenance .
The main difference between a diesel and a steam engine is the diesel engine is an internal combustion and the steam engine is external combustion.
steam engine trains.
Steam trains are powered by steam and relies upon the presure from the steam in the boiler. Diesel trains work the same way a normal car does with a motor and a lot of fuel. Electric trains rely upon the motor, but also a constant power connection either through a third rail or overheard wires. Diesel and electrical trains are normally faster and cleaner than steam. +++ Actually the motive power unit is a "locomotive" or (if steam) "engine"; NOT a 'train'. The "train" is the set of rolling-stock it tows.
Steam trains were first. they use both fire and water to produce steam and make the engine run.
The Diesel engine
There isn't one coal is burnt in the train which heats the water turning it into stream which is pushed through a number of tight pipes building pressure to delivery drive to the wheels.Answer 2- A 'steam train' is a train which is being hauled by a steam powered engine.- A coal train is a train carrying coal. It may be pulled by a steam engine, and so also be a 'steam train', but modern trains are usually hauled by diesel or electric locomotives, and will not be steam trains.
diesel engine
Steam Trains release steam and coal smoke, because they run on steam generated by heating water with burning coal. Diesel Trains release smoke for the same reasons your car release smoke, it runs on oil.
its more efficient and diesel trains consume more natural resources like oil which is also used for planes, cars and boats. only steam trains use coal.
Modern trains are powered by diesel or electricity. There are still some coal powered steam trains in service, mainly on tourist lines.