What Is the Drivetrain on a Semi Truck?

The drivetrain on a semi-truck is a crucial component of the vehicle’s power system. It is responsible for connecting the engine to the wheels, allowing the semi-truck to move forward and backward. The drivetrain consists of several components, including the transmission, differential, driveshaft, axle, and wheels.

Transmission: The transmission is responsible for converting engine power into torque and speed that can be used to rotate the wheels. It functions as an intermediary between the engine and differential. In most cases, semi-trucks are equipped with an automated manual transmission (AMT), which allows drivers to shift gears automatically without having to manually operate a clutch.

Differential: The differential is what allows both wheels on one axle to rotate at different speeds. This allows for smooth cornering by allowing each wheel to turn independently from each other as needed.

In a truck’s drivetrain setup, this usually takes the form of a limited-slip differential (LSD).

Driveshaft: The driveshaft connects the transmission to the differential and transmits rotational force from one component to another. It is usually made out of metal or aluminum alloy and is designed in such a way that it can withstand high levels of torque without becoming damaged or worn out quickly.

Axle: The axle helps transfer torque from the driveshaft to the wheels and is also responsible for providing support for them as they rotate. It is typically made out of steel or aluminum alloy and often includes bearings that allow it to rotate freely when connected to other components in the drivetrain system.

Wheels: Finally, we have the wheels which are responsible for actually moving the truck forward or backward when powered by the drivetrain system. Most semi-trucks utilize heavy duty tires made out of rubber compounds designed specifically for use on commercial vehicles like semi-trucks due to their increased load capacity and durability requirements.

Conclusion: In summary, what makes up the drivetrain on a semi-truck includes its transmission, differential, driveshaft, axle, and wheels – all working together in harmony so that drivers can safely transport goods across long distances with ease!

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Karen Watkins