Driving wheel

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Traction motor german-class140

MILW 261 drivers

60163 Tornado wheel

Steam locomotive driving wheel

Driving wheel refers to the wheel of a vehicle that receives power from the engine or motor to propel the vehicle forward. In the context of various modes of transportation, the term can have different specific meanings, but it generally denotes the wheels that are responsible for converting the vehicle's engine power into movement.

Overview

In automotive engineering, the driving wheels are part of the vehicle's drivetrain that delivers power from the engine to the road surface, enabling the vehicle to move. The configuration of driving wheels can vary significantly depending on the type of vehicle and its intended use. For example, in a front-wheel drive vehicle, the front wheels are the driving wheels, while in a rear-wheel drive setup, the power is delivered to the rear wheels. All-wheel drive and four-wheel drive vehicles distribute power to all four wheels to improve traction under various driving conditions.

Types of Driving Wheels

Automotive

In cars and trucks, driving wheels are determined by the vehicle's drivetrain layout. The most common layouts include:

• Front-wheel drive (FWD) - where the front wheels receive the power.
• Rear-wheel drive (RWD) - where the rear wheels are powered.
• All-wheel drive (AWD) - where power is distributed to all wheels, often variably.
• Four-wheel drive (4WD) - similar to AWD but typically designed for off-road use with selectable drive modes.

Rail Transport

In rail transport, the driving wheels are the large wheels connected to the locomotive's driving rods or motors, transferring power to the rails. Steam locomotives have large driving wheels connected to the pistons via rods, while electric and diesel locomotives use traction motors. The size and number of driving wheels can significantly affect a locomotive's speed and pulling power.

Bicycles and Motorcycles

On bicycles and motorcycles, the rear wheel is typically the driving wheel, powered by pedaling or the engine, respectively. The chain or belt connects the crankshaft or motor to the rear wheel, propelling the vehicle forward.

Importance of Driving Wheels

The configuration and type of driving wheels are crucial for a vehicle's performance, handling, and efficiency. For example, front-wheel drive vehicles tend to have better traction in poor weather conditions, while rear-wheel drive vehicles often offer better handling and acceleration. All-wheel drive and four-wheel drive systems provide superior traction in off-road conditions or when driving on slippery surfaces.

Maintenance

Proper maintenance of the driving wheels and their components (such as tires, axles, and differentials) is essential for safe and efficient operation. Regular checks and maintenance can prevent accidents and extend the lifespan of the vehicle.

See Also

• Traction (physics)
• Differential (mechanical device)
• Transmission (mechanics)
• Wheel