What are the differences between driven wheels and driving wheels?
3 Answers
Driven wheels and driving wheels differ in the following aspects: 1. Different functions: The driving wheel converts the engine's energy into kinetic energy, propels the driving wheel to rotate, enabling the vehicle to move forward or backward, while also outputting power and torque; The passive wheel has no power and serves a supporting role. Its rotation is driven by an external force, hence it is called passive or driven. 2. Different characteristics: The power source of the driving wheel is the engine, which transforms the engine's energy into kinetic energy to drive the driving wheel's rotation; The passive wheel: The driven wheel's power source is the driving wheel, rotating as the driving wheel turns. The main function of the driven wheel is to support the vehicle's weight. The ground friction force borne by the driven wheel acts as resistance, with its direction opposite to that of the wheel's rolling.
The most obvious difference between drive wheels and driven wheels lies in which one provides power. I learned this from driving experience – drive wheels are directly connected to the engine, and the car moves forward entirely by their push, such as the rear wheels in a rear-wheel-drive vehicle. Driven wheels, on the other hand, do nothing but get dragged along to rotate, like steering wheels. This distinction significantly impacts daily use: drive wheels wear out faster, consume more tires, and hurt the wallet when replacing them; driven wheels are less troublesome, but their bearings still need inspection during maintenance to avoid jamming. Vehicle design relies on this to determine which wheels provide power and which follow along, such as the four-wheel-drive system in SUVs that turns both front and rear wheels into drive wheels for better climbing and off-road capability. In short, understanding more can prevent issues and help make informed choices when selecting a car.
To be honest, after studying cars extensively, I've noticed a significant difference in driving feel between drive wheels and driven wheels. Drive wheels are the active ones, controlled by the engine, providing that push-back sensation during acceleration; while driven wheels merely follow passively, mainly serving for support and steering. For example, in front-wheel-drive cars, the front wheels handle both driving and steering, making them prone to skidding on slippery surfaces; whereas rear-wheel-drive cars with rear drive wheels and front driven wheels offer more stability in turns. In terms of maintenance, drive wheels experience greater friction, increasing the risk of tire or bearing damage, so they require frequent checks; for driven wheels, occasional lubrication when there's unusual noise usually suffices. Understanding these aspects helps us better handle road conditions and enhance driving safety.
