The engine or locomotive.
The engine on a train is behind the driver.
The engine of an old train would be a steam engine.
The "Engine".
As an engine turns it sucks air in, which draws fuel with it. In a turbo engine a fan (turbocharger) forces more air into the engine, which draws fuel with it. The more fuel and air that goes into the engine the more power is produced. A turbocharged engine can produce perhaps double the power that a non turbocharged engine produces.
As the train draws closer, the frequency of the sound you hear increases. This is due to the Doppler effect, where the perceived frequency of a sound source changes relative to an observer's position. The sound waves are compressed in front of the moving train and stretched behind it, affecting the pitch you hear.
In swedish 'lok' means 'train engine"
The weight of a train engine varies depending on the type of engine. A diesel engine can weigh as much as 250 tons while a steam engine would be about 100 tons.
In most cases the car at the front of a train is the engine or the locomotive. However, sometimes the train is pushed from behind and then the engine is the car at the end.
An airbox is a chamber in a car or motorcycle engine which draws in air and distributes it to the carburetors.
Kilogram
Deisel
Metal