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Should You Buy An All Wheel Drive Car?
Should You Buy An All Wheel Drive Car?
Published: 2016/03/29
Channel: Scotty Kilmer
Do you really need all-wheel drive? | Consumer Reports
Do you really need all-wheel drive? | Consumer Reports
Published: 2015/09/29
Channel: Consumer Reports
AWD Cars - All Wheel Drive - Explained
AWD Cars - All Wheel Drive - Explained
Published: 2012/05/09
Channel: Engineering Explained
The Differences Between AWD and 4WD
The Differences Between AWD and 4WD
Published: 2017/01/13
Channel: Car Throttle
4WD vs  AWD
4WD vs AWD
Published: 2016/03/12
Channel: Trevor Benneworth
GT-R Killer! All-wheel-drive S13 Silvia
GT-R Killer! All-wheel-drive S13 Silvia
Published: 2017/07/18
Channel: MotiveDVD
What Is The Best AWD System?
What Is The Best AWD System?
Published: 2015/11/04
Channel: Engineering Explained
Real Symmetrical All Wheel Drive   AWD vs FWD vs RWD
Real Symmetrical All Wheel Drive AWD vs FWD vs RWD
Published: 2016/11/15
Channel: Vũ Huỳnh
All Wheel drive vs 4x4; What is the difference?
All Wheel drive vs 4x4; What is the difference?
Published: 2014/07/02
Channel: MotoramaGroup
AWD vs. 4x4: How do they perform Off-Road?
AWD vs. 4x4: How do they perform Off-Road?
Published: 2016/04/15
Channel: The Fast Lane Truck
Top 10 Best All Wheel Drive Sports Cars
Top 10 Best All Wheel Drive Sports Cars
Published: 2016/06/17
Channel: Car News Central
AWD Test; nissan vs honda vs ford vs toyota vs subaru
AWD Test; nissan vs honda vs ford vs toyota vs subaru
Published: 2015/03/14
Channel: urerodion
All ALL WHEEL DRIVES are NOT created equal. (Subaru Vs Other
All ALL WHEEL DRIVES are NOT created equal. (Subaru Vs Other
Published: 2007/12/11
Channel: subaruofdallas
CNET On Cars - AWD systems explained
CNET On Cars - AWD systems explained
Published: 2013/06/04
Channel: CNET
FWD vs RWD vs AWD: Know How to Handle Your Junk! - The Racing Line Ep. 9
FWD vs RWD vs AWD: Know How to Handle Your Junk! - The Racing Line Ep. 9
Published: 2016/08/26
Channel: Motor Trend Channel
The 800hp AWD Cutlass!? - vs - 800hp Jeep SRT-8
The 800hp AWD Cutlass!? - vs - 800hp Jeep SRT-8
Published: 2015/07/06
Channel: 1320video
AWD vs RWD vs FWD || Track Test || Forza Science
AWD vs RWD vs FWD || Track Test || Forza Science
Published: 2015/10/03
Channel: Gingium
Subaru All Wheel Drive Traction Testing
Subaru All Wheel Drive Traction Testing
Published: 2011/05/31
Channel: AutomotiveEvents1
Mercedes 4Matic All Wheel Drive System Explanation
Mercedes 4Matic All Wheel Drive System Explanation
Published: 2009/12/31
Channel: CarDataVideo
AWD vs FWD vs RWD: Who Wins? - XCAR
AWD vs FWD vs RWD: Who Wins? - XCAR
Published: 2015/02/23
Channel: Carfection
What is Subaru Symmetrical All-Wheel Drive? (2017 Updated)
What is Subaru Symmetrical All-Wheel Drive? (2017 Updated)
Published: 2017/02/13
Channel: Subaru
Haldex Gen V all-wheel drive system
Haldex Gen V all-wheel drive system
Published: 2013/07/24
Channel: AUSmotive
2017 Kia Sportage Dynamax AWD
2017 Kia Sportage Dynamax AWD
Published: 2016/03/12
Channel: Kia Motors America
Mercedes-Benz 4MATIC All Wheel Drive -- AWD Cars and SUVs
Mercedes-Benz 4MATIC All Wheel Drive -- AWD Cars and SUVs
Published: 2012/07/17
Channel: Mercedes-Benz USA
$115,000 915HP All Wheel Drive Honda Civic Walk Around
$115,000 915HP All Wheel Drive Honda Civic Walk Around
Published: 2016/09/07
Channel: EpicJonTuazon
How Every Single Modern Subaru AWD System Works
How Every Single Modern Subaru AWD System Works
Published: 2017/07/05
Channel: Engineering Explained
Ford All-Wheel Drive: From Mountain to Beach
Ford All-Wheel Drive: From Mountain to Beach
Published: 2015/09/10
Channel: Ford Europe
BMW xDrive All-Wheel Drive vs. The Competition
BMW xDrive All-Wheel Drive vs. The Competition
Published: 2012/12/24
Channel: BMW Canada
2012 NISSAN JUKE - All-Wheel Drive Mode Switch
2012 NISSAN JUKE - All-Wheel Drive Mode Switch
Published: 2015/04/19
Channel: Nissan Owner Channel
AWD vs 4WD: What
AWD vs 4WD: What's the Difference, and Which Is Best For You?
Published: 2015/12/16
Channel: Go Auto
Talking Cars with Consumer Reports #79: All-Wheel-Drive: What Is It Good For? | Consumer Reports
Talking Cars with Consumer Reports #79: All-Wheel-Drive: What Is It Good For? | Consumer Reports
Published: 2015/09/29
Channel: Consumer Reports
2015 Hyundai Genesis | HTRAC All Wheel Drive | “Snow Day”
2015 Hyundai Genesis | HTRAC All Wheel Drive | “Snow Day”
Published: 2015/02/07
Channel: HyundaiUSA
Audi quattro all-wheel drive
Audi quattro all-wheel drive
Published: 2015/01/20
Channel: Audi Australia
CHRISTINI All Wheel Drive Motorcycle do what other Motorcycles just can
CHRISTINI All Wheel Drive Motorcycle do what other Motorcycles just can't do!
Published: 2012/05/18
Channel: Steve Christini
2015 Nissan Rogue - All-Wheel Drive (AWD) (if so equipped)
2015 Nissan Rogue - All-Wheel Drive (AWD) (if so equipped)
Published: 2015/04/18
Channel: Nissan Owner Channel
How Haldex (AWD) All Wheel Drive Works
How Haldex (AWD) All Wheel Drive Works
Published: 2017/01/24
Channel: Deutsche Auto Parts
FORD TRANSIT AWD - All Wheel Drive - 4x4 - System
FORD TRANSIT AWD - All Wheel Drive - 4x4 - System
Published: 2015/06/04
Channel: Marc Brunner
La tracción total simétrica (AWD) mejora la seguridad. Episodio 2
La tracción total simétrica (AWD) mejora la seguridad. Episodio 2
Published: 2013/08/12
Channel: Subaru España
Mahindra XUV500
Mahindra XUV500's All Wheel Drive (AWD) System
Published: 2012/11/05
Channel: Mahindra XUV500
2016 Buick Enclave Performance/Active Intelligent All-Wheel Drive
2016 Buick Enclave Performance/Active Intelligent All-Wheel Drive
Published: 2016/03/16
Channel: Buick
Top 5 Awesome New All-Wheel-Drive Cars & Crossovers Counted Down
Top 5 Awesome New All-Wheel-Drive Cars & Crossovers Counted Down
Published: 2016/03/17
Channel: The Fast Lane Car
What Are The Best AWD Cars You Can Buy For Under $30,000? -- AFTER/DRIVE
What Are The Best AWD Cars You Can Buy For Under $30,000? -- AFTER/DRIVE
Published: 2014/03/13
Channel: /DRIVE
Top 10 All Wheel Drive Sedan Cars of 2016  || Pastimers
Top 10 All Wheel Drive Sedan Cars of 2016 || Pastimers
Published: 2016/01/14
Channel: Pastimers - World's Best & Worst
Toyota Sienna: All Wheel vs Front Wheel Drive
Toyota Sienna: All Wheel vs Front Wheel Drive
Published: 2014/09/12
Channel: Laura Madison
Volvo Trucks Automatic All-Wheel Drive
Volvo Trucks Automatic All-Wheel Drive
Published: 2015/05/19
Channel: GommeBlog.it: Car & Performance
New BMW M5 (2018) Why All-Wheel Drive? [YOUCAR]
New BMW M5 (2018) Why All-Wheel Drive? [YOUCAR]
Published: 2017/05/21
Channel: YOUCAR
2017 Dodge Challenger GT All Wheel Drive Car Review
2017 Dodge Challenger GT All Wheel Drive Car Review
Published: 2017/03/28
Channel: Dallas Coleman
Live demonstration of Subaru Forester and Outback
Live demonstration of Subaru Forester and Outback's 4x4 symmetrical all wheel drive system
Published: 2011/11/15
Channel: SubaruVideos
Crossover AWD / 4WD Systems
Crossover AWD / 4WD Systems
Published: 2015/04/14
Channel: WeberAuto
Lego Technic - All Wheel Drive Rally Car
Lego Technic - All Wheel Drive Rally Car
Published: 2013/03/30
Channel: Nico71's Lego Technic Creations
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WIKIPEDIA ARTICLE

From Wikipedia, the free encyclopedia
  (Redirected from AWD (vehicle))
Jump to: navigation, search
The Jeep Wrangler is a 4×4 four-wheel drive vehicle equipped with a low-range gearbox, which provides the driver with a selection between low range or high range gearing
Hayes WHDX 70-170 6×6 tractor
The 8×8 tractor unit of the HETS heavy equipment transport system

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:

4×4 (also, four-wheel drive and 4WD)
Reflecting two axles with both wheels on each capable of being powered.
6×6 (also, six-wheel drive and 6WD)
Reflecting three axles with both wheels on each capable of being powered.
8×8 (also, eight-wheel drive and 8WD)
Reflecting 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 (also, part-time)
One axle is permanently connected to the drive, the other is being connected as needed
Full-time (also, permanent)
All axles are permanently connected, with or without a differential.

Usage of the terminology[edit]

Today, the designation AWD is becoming narrowed, particularly in North America, to apply to vehicles with drive train systems that have permanent drive and usually include a differential between the front and rear drive shafts. However, the designations AWD[1] and all-wheel drive[2] long predated the trend, with Associated Equipment Company (AEC) building AWD trucks in conjunction with FWD (UK) in 1929, and General Motors manufacturing a line as "all-wheel drive" as early as the late 1930s. This distinction in terminology is not generally used outside North America.

Characteristics[edit]

When tire grip is good during road driving, a differential is used between the axles to avoid driveline windup. This is not required off-road, as the limited grip allows the tires to slip relative to each other. All-wheel drive vehicles designed for extensive off-road use may not have such a differential, and so they suffer from wind-up when used on-road.[3] Selectable 4WD also avoids this problem and requires only a simple dog clutch in the transfer case, rather than a differential. For this reason, most early off-road vehicles used that system; e.g., Jeep, Land Rover.

As vehicles became more sophisticated and tires gave better winter performance in the 1960s there was an interest in giving the benefits of all-wheel drive to conventional cars; not for off-road use but for winter use in snow or on wet roads. Esoteric vehicles such as the high-powered Jensen FF followed by the AMC Eagle, Subaru Leone and Audi Quattro series were the first to offer all-wheel drive in a high-speed road-based car. These, particularly the Quattro, would extensively develop this drivetrain with the use of viscous couplings and differentials to provide a safe and drivable car. The first off-road / on-road hybrids such as the Range Rover also chose the permanent all wheel drive system rather than manual selection.

Selectable 4WD has both axles rigidly coupled together, which has some advantages in very poor off-road conditions. To gain the same advantage in a permanent AWD system with a differential, the differential can be locked manually with a differential lock. As this control is frequently misunderstood and mis-used, which can then cause damage due to wind-up, they have tended to be replaced by automatic locking through the viscous couplers.

See also[edit]

References[edit]

  1. ^ Allisons.org Automotive History [1]"1929: AEC started to build AWD trucks in conjunction with FWD (UK)"
  2. ^ MEYER, DONALD E. THE FIRST CENTURY OF GMC TRUCK HISTORY [2] "By December [1939], GMC had orders for more than 4,400 all-wheel-drive military trucks."
  3. ^ Ware, Pat (1994). In National Service. Warehouse Publications. p. 118. ISBN 0-9525563-0-8. 

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