All-wheel drive
Powertrain providing power to all its wheels for use primarily on paved surfaces / From Wikipedia, the free encyclopedia
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An all-wheel drive vehicle (AWD vehicle) is one with a powertrain capable of providing power to all its wheels, whether full-time or on-demand.
The most common forms of all-wheel drive are:
- 1x1
- All unicycles
Reflects one axle with one wheel capable of being powered. - 2x2
- Some motorcycles and bikes
Reflects two axles with one wheel on each capable of being powered. - 4×4 (also, four-wheel drive or 4WD)
- Reflects two axles with both wheels on each capable of being powered.
- 6×6 (also, six-wheel drive or 6WD)
- Reflects three axles with both wheels on each capable of being powered.
- 8×8 (also, eight-wheel drive or 8WD)
- Reflects four axles with both wheels on each capable of being powered.
Vehicles may be either part-time all-wheel drive or full-time:
- On-demand or Part-time
- One axle is permanently connected to the drive, the other is connected as needed
- Full-time or Permanent
- All axles are permanently connected, with or without a differential.
- Independent
- The wheels are driven, but not dependent on a central mechanical power coupling.