All Wheel Drive Encyclopedia

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Volvo

850 AWD - Automatic all wheel drive, torque transfer to rear axle via viscous coupling when front wheels slip, electronic traction control on front wheels, limited slip rear differential.

Figure: Volvo 850 viscous coupling and disconnect unit (what is a disconnect unit?)

V70 AWD (1997-2002), V70 Cross Country (2000-2002), XC70 (2002) - Automatic all wheel drive, torque transfer to rear axle via viscous coupling when front wheels slip, electronic traction control on front wheels (TRACS - Volvo's brand of traction control). TRACS system works on speeds up to 40kph(25mph).

Volvo S60 AWD (2002) - Haldex Generation I automatic all wheel drive.

Volvo S60 AWD (2003-...),
Volvo V70 AWD (2003-...),
Volvo XC 70 (2003-...),
Volvo S60R AWD,
Volvo V70R AWD
- Haldex Generation II automatic all wheel drive.

Volvo XC 90 (2002-...) - Haldex Generation II automatic all wheel drive.

All Volvos have Haldex Gen III since 2006(?)


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There are 7 comments
Joel
March 01, 2010 - 20:20
Subject: disconnect unit

The 'disconnect' unit is a 'freewheel':
http://en.wikipedia.org/wiki/Freewheel

Reply to Joel
awd.ee
March 21, 2010 - 12:01
Subject:

Thanks

George
January 11, 2010 - 00:42
Subject: Haldex iterations

In the US, the Volvo S60R (and V70R) was updated from Haldex 2.0 to Haldex 3.0 for the 2006 model year.
www.haldex.com

www.haldex.com

Butt
January 08, 2010 - 02:18
Subject: ...

Very useful !! Thank you.

AWD
September 14, 2009 - 11:12
Subject: Opel/ Vauxhall Calibra/Vectra A
Zilesio
February 21, 2009 - 14:01
Subject: Mazda 323 GT Turbo 4WD

You forgot the Mazda 323 1.6 GT Turbo 4WD! (and/or 1.8 GTX)

We are again on a full-time AWD System with planetary gear center differential to split engine torque, electrically lockable via a button on the console that would have activated a Viscous Coupling unit.

Before 1990:
- Normal torque split 50/50
- 185/60R14 performance tires on 5.5J-14 alloy wheels

From 1990:
- Normal torque split of 43/57 (for a rear-wheel-drive feel) could be varied to 60/40
-195 / 60R-14 performance tires

Reply to Zilesio
awd.ee
February 21, 2009 - 19:05
Subject: Re: Mazda 323 GT Turbo 4WD

Yep, thanks for the info. Mazda 6 MPS is coming soon too.

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