Mazda all wheel drive explained

All Wheel Drive
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Mazda

323 GTX 1986-1992 - 1.6 4wd Turbo - full-time all wheel drive with planetary gear center differential, electrically lockable via a button on the console. Open differentials front and rear.
1.8 4wd - full-time all wheel drive with viscous-coupling limited slip planetary gear center differential, multi-plate type limited-slip differentials front and rear.

Before 1990: Torque split in normal conditions 50/50.
From 1990: Torque split in normal conditions 43/57 (for a rear-wheel-drive feel) could be varied to 60/40.

More information: http://www.mazdafun.com/bf%20drive%20train.htm

626 4wd - ?

6 MPS (MAZDASPEED6 in the U.S.) - "Active Torque Split" pro-active automatic all wheel drive. Normally front-wheel drive vehicle. Electronically controlled multiplate electromagnetic clutch transfers up to 100% of torque to the rear when needed. Limited-slip differential in the rear.

The MAZDASPEED6 with advanced AWD system analyzes real-time data on steering angle, yaw rate, lateral G-force and engine status to establish up-to-minute road surface conditions, and the vehicle's dynamic status. Normal, Sport, and Snow modes give the perfect amount of torque where it is most needed, and have a performance reaction that leaves conventional gear- or fluid-controlled systems in the dust. Front/rear torque distribution varies from 100/0 to 50/50.
Source: www.mazdausa.com

Figure: Mazda 6 MPS front differential

Figure: Mazda 6 MPS rear differential

Last updated: 2010-05-21 22:42

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