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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
The Differences Between AWD and 4WD
The Differences Between AWD and 4WD
Published: 2017/01/13
Channel: Car Throttle
AWD Cars - All Wheel Drive - Explained
AWD Cars - All Wheel Drive - Explained
Published: 2012/05/09
Channel: Engineering Explained
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
They Built an ALL WHEEL DRIVE 1300hp Civic
They Built an ALL WHEEL DRIVE 1300hp Civic
Published: 2017/11/17
Channel: 1320video
4WD vs  AWD
4WD vs AWD
Published: 2016/03/12
Channel: Trevor Benneworth
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
Top 10 Best All Wheel Drive Sports Cars
Top 10 Best All Wheel Drive Sports Cars
Published: 2016/06/17
Channel: Car News Central
What Is The Best AWD System?
What Is The Best AWD System?
Published: 2015/11/04
Channel: Engineering Explained
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
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
AWD vs 4WD | You Auto Know
AWD vs 4WD | You Auto Know
Published: 2016/01/12
Channel: Morrie's Automotive Group
How Every Single Modern Subaru AWD System Works
How Every Single Modern Subaru AWD System Works
Published: 2017/07/05
Channel: Engineering Explained
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
Top 10 Cheapest All-Wheel Drive Cars: The Short List | Most Affordable AWD Sedans and Wagons
Top 10 Cheapest All-Wheel Drive Cars: The Short List | Most Affordable AWD Sedans and Wagons
Published: 2017/11/09
Channel: AutoGuide.com
AWD vs RWD vs FWD || Track Test || Forza Science
AWD vs RWD vs FWD || Track Test || Forza Science
Published: 2015/10/03
Channel: Gingium
10 Cheapest All-Wheel Drive Crossovers: The Short List | Most Affordable AWD CUVs
10 Cheapest All-Wheel Drive Crossovers: The Short List | Most Affordable AWD CUVs
Published: 2017/07/25
Channel: AutoGuide.com
All Wheel drive vs 4x4; What is the difference?
All Wheel drive vs 4x4; What is the difference?
Published: 2014/07/02
Channel: MotoramaGroup
Epic AWD Drift And Powerslide Compilation Part 2! (All Wheel Drive)
Epic AWD Drift And Powerslide Compilation Part 2! (All Wheel Drive)
Published: 2017/11/19
Channel: RedLine
आखिर 4X4/ 4WD और AWD में फर्क क्या ?
आखिर 4X4/ 4WD और AWD में फर्क क्या ?
Published: 2017/05/31
Channel: Gagan Choudhary
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
AWD vs 4WD: What
AWD vs 4WD: What's the Difference, and Which Is Best For You?
Published: 2015/12/16
Channel: Go Auto
Front-wheel-drive v rear-wheel-drive v all-wheel-drive | A CarAdvice Feature
Front-wheel-drive v rear-wheel-drive v all-wheel-drive | A CarAdvice Feature
Published: 2016/06/01
Channel: CarAdvice.com
Subaru All Wheel Drive Traction Testing
Subaru All Wheel Drive Traction Testing
Published: 2011/05/31
Channel: AutomotiveEvents1
10 Best All-Wheel-Drive Cars Under $25,000 For 2017-2018
10 Best All-Wheel-Drive Cars Under $25,000 For 2017-2018
Published: 2017/11/16
Channel: Top Cars
2WD versus AWD SUV: Which is best? | Auto Expert John Cadogan | Australia
2WD versus AWD SUV: Which is best? | Auto Expert John Cadogan | Australia
Published: 2017/06/17
Channel: AutoExpertTV
Subaru Symmetrical All-Wheel Drive VS Audi quattro ultra Technology
Subaru Symmetrical All-Wheel Drive VS Audi quattro ultra Technology
Published: 2017/06/17
Channel: AUTO Mania
The 800hp AWD Cutlass!? - vs - 800hp Jeep SRT-8
The 800hp AWD Cutlass!? - vs - 800hp Jeep SRT-8
Published: 2015/07/06
Channel: 1320video
Mercedes 4Matic All Wheel Drive System Explanation
Mercedes 4Matic All Wheel Drive System Explanation
Published: 2009/12/31
Channel: CarDataVideo
2017 Dodge Challenger GT AWD - All Wheel Drive
2017 Dodge Challenger GT AWD - All Wheel Drive
Published: 2016/12/07
Channel: DPCcars
World
World's Only All-Wheel-Drive Dodge Challenger GT AWD @SEMA
Published: 2015/11/04
Channel: The Fast Lane Car
1300HP AWD Civic - DOMESTIC KILLER!
1300HP AWD Civic - DOMESTIC KILLER!
Published: 2017/11/17
Channel: That Racing Channel
Lawson All-Wheel-Drive Motorcycle
Lawson All-Wheel-Drive Motorcycle
Published: 2013/06/28
Channel: Dirt Rider Magazine
$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
All Wheel Drive Motorcycle :SEMA 2016
All Wheel Drive Motorcycle :SEMA 2016
Published: 2016/11/06
Channel: mixflip
All-Wheel Drive Toro Lawn Mower
All-Wheel Drive Toro Lawn Mower
Published: 2014/10/22
Channel: Toro®
Audi quattro all-wheel drive system with ultra technology
Audi quattro all-wheel drive system with ultra technology
Published: 2016/02/17
Channel: MOTOR1
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
Polaris Sportsman Shootout: Sportsman On-Demand All-Wheel Drive vs. Yamaha On-Command 4WD
Polaris Sportsman Shootout: Sportsman On-Demand All-Wheel Drive vs. Yamaha On-Command 4WD
Published: 2015/11/10
Channel: Polaris RANGER ATV
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
Audi Quattro vs. Other All-Wheel Drive Systems
Audi Quattro vs. Other All-Wheel Drive Systems
Published: 2007/01/17
Channel: Erickson Manzano
7 Hottest Four-Wheel Drive Cars For Under $8000
7 Hottest Four-Wheel Drive Cars For Under $8000
Published: 2016/10/19
Channel: Car News Central
What is the difference between Honda
What is the difference between Honda's Four Wheel Drive (4WD) vs All-Wheel Drive (AWD)
Published: 2013/02/11
Channel: Hagerstown Honda
Volvo All Wheel Drive - Haldex Generation 5
Volvo All Wheel Drive - Haldex Generation 5
Published: 2012/09/26
Channel: Volvo Of Oakville
Haldex Gen V all-wheel drive system
Haldex Gen V all-wheel drive system
Published: 2013/07/24
Channel: AUSmotive
Ford Kuga - Intelligent all-wheel Drive System
Ford Kuga - Intelligent all-wheel Drive System
Published: 2012/03/20
Channel: Ford Europe
HONDA SH-AWD (Super Handling All-Wheel Drive) INTRODUCTION
HONDA SH-AWD (Super Handling All-Wheel Drive) INTRODUCTION
Published: 2008/05/08
Channel: European Motor News
How Haldex (AWD) All Wheel Drive Works
How Haldex (AWD) All Wheel Drive Works
Published: 2017/01/24
Channel: Deutsche Auto Parts
How does all-wheel drive work? All-wheel drive demonstration on snow
How does all-wheel drive work? All-wheel drive demonstration on snow
Published: 2015/07/30
Channel: CarAdvice.com
DIY Two Motor 2wd Electric Bicycle (All wheel drive 2x2!!) Q&A#6
DIY Two Motor 2wd Electric Bicycle (All wheel drive 2x2!!) Q&A#6
Published: 2017/06/25
Channel: EbikeSchool.com
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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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