Drivetrain

A drivetrain, also known as a transmission system, is the group of components that deliver mechanical power from the prime mover to the driven components. In automotive engineering, the drivetrain is the components of a motor vehicle that deliver power to the drive wheels. This excludes the engine or motor that generates the power.

In marine applications, the drive shaft will drive a propeller, thruster, or waterjet rather than a drive axle, while the actual engine might be similar to an automotive engine.
Other machinery, equipment and vehicles may also use a drivetrain to deliver power from the engine(s) to the driven components.

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Source: Wikipedia · Image: Wikimedia Commons · CC BY-SA 3.0

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