on video How do diesel-electric locomotives work?

How do diesel-electric locomotives work?
In many parts of the world, diesel-electric locomotives are the main traction power for trains. A diesel-electric locomotive is similar to a road vehicle in having an internal combustion engine as its primary power source. However, the similarity ends there. Internal combustion engines operate efficiently only in a narrow rpm band. For a railway locomotive carrying over 1,000 tons of loads, extracting the required torque from an internal combustion engine would require an impractical number of gears. Therefore, a diesel-electric locomotive generates electricity to run its traction motors. The mechanisms involved are explained in this video "How do diesel-electric locomotives work?"

 

How do diesel-electric locomotives work?
In many parts of the world, diesel-electric locomotives are the main traction power for trains. A diesel-electric locomotive is similar to a road vehicle in having an internal combustion engine as its primary power source. However, the similarity ends there. Internal combustion engines operate efficiently only in a narrow rpm band. For a railway locomotive carrying over 1,000 tons of loads, extracting the required torque from an internal combustion engine would require an impractical number of gears. Therefore, a diesel-electric locomotive generates electricity to run its traction motors. The mechanisms involved are explained in this video "How do diesel-electric locomotives work?"