Table of Contents
What is the advantage of electric locomotive?
Electric locomotives benefit from the high efficiency of electric motors, often above 90\% (not including the inefficiency of generating the electricity). Additional efficiency can be gained from regenerative braking, which allows kinetic energy to be recovered during braking to put power back on the line.
What are the advantages of diesel-electric?
They include a more efficient propulsion system, less pollution, increased operational efficiency, especially at slow speeds (important for applications such as dynamic positioning), and flexibility in locating machinery compartments.
What are the advantages and disadvantages of diesel-electric traction?
Main advantages of the drive are low investment and flexibility of the routs and have the disadvantages of low overload capacity, uneconomical operation, high maintenance cost and short life.
Why electric trains are better than diesel trains?
Electric lines mean that trains with heavy diesel engines are not needed. Thus, this means the electric trains are lighter than diesel trains. According to railway-technology.com, electric trains are more environmentally friendly too, emitting between 20\% – 30\% less carbon monoxide than their diesel counterparts.
How efficient are diesel-electric trains?
Though trains are more efficient than trucks, not all trains are equally efficient. Diesel-powered trains transfer about 30-35 percent of the energy generated by combustion to the wheels, while supplying electricity directly from an overhead powerline transfers about 95 percent of the energy to the wheels.
What are the disadvantages of diesel-electric traction?
As compared with an electric locomotive, however, the diesel-electric has an important drawback: since its output is essentially limited to that of its diesel engine, it can develop less horsepower per locomotive unit.
How does a diesel hydraulic locomotive work?
Diesel–hydraulic locomotives use one or more torque converters, in combination with fixed ratio gears. Drive shafts and gears form the final drive to convey the power from the torque converters to the wheels, and to effect reverse.
How efficient are diesel electric trains?
What is a diesel electric train?
A diesel-electric locomotive is equipped with a diesel engine that spins a generator (DC) or alternator (AC) to create electricity. This electricity then powers the heavy electric motors that move the train forward. A diesel-electric locomotive has no mechanical connection between the prime mover and the axles.
What are the advantages of electric traction over non electric traction?
Electric traction system It has many advantages over non-electric traction systems such as more clean and easy to handle, no need of coal and water, easy speed control, high efficiency, low maintenance and running costs, etc.
What are the advantages and disadvantages of diesel locomotives?
The major advantage of the diesel locomotive engine is its ability to work under all conditions and at all terrains, and the major disadvantage of the electric locomotive engine compared to the diesel locomotive engine is the requirement for power supply in the form of overhead electric lines.
What is a diesel-electric locomotive?
A diesel-electric locomotive is two machines in one: a diesel engine and an electrical generator. The diesel engine, or “prime mover,” doesn’t move the locomotive itself.
How does a diesel train generate power?
The engine of the diesel train does not require direct power or electricity from overhead lines. This type of locomotive does not generate the own power. This type of locomotive generates self-power by using diesel fuel with a two-stroke or four-stroke engine. The electric engine is lightweight.
Are electric engines easier to maintain than diesel engines?
Diesel engines on the other hand have a large number of moving parts such as pistons, valves, turbines, and chains. Electric engines are therefore easier to maintain whereas the moving parts of a diesel engine require constant maintenance.