Why were steam engines replaced by diesel and electric engines?
Why were steam engines replaced by diesel and electric engines? The diesel engine drives an alternator, which produces electricity to run electric motors mounted on the locomotive's axles. The internal combustion engine was a dramatic improvement in efficiency over the steam locomotive, making substantial savings possible in maintenance and the elimination of widespread facilities.
What eventually replaced the steam engine?
Eventually, the steam engine would be replaced by more efficient means of energy conversion, such as internal combustion engines.
Are steam engines efficient?
Steam engines and turbines operate on the Rankine cycle which has a maximum Carnot efficiency of 63% for practical engines, with steam turbine power plants able to achieve efficiency in the mid 40% range.
Why are diesel trains never turned off?
A train engine requires about a hundred litres of fuel to get it started. So it wouldn't be economical if the engine is stopped and started frequently. This apart, if the engine is stopped, the moving parts' lubrication will also come to a halt.