| 2008 Saab Turbo X Driven | Photos | Page 2 of 4 | Next>> |
The Turbo X marks the debut of Saab's XWD ("Cross Wheel Drive," as the Swedes say it), a fourth-generation Haldex-built all-wheel-drive system that will also be available on garden-variety Saab 9-3s. Unlike previous Haldex systems, the center clutch-pack coupling (which is technically not a differential) no longer relies on wheelspin in order to transfer torque to the rear axle.Instead, an electrically driven hydraulic pump can preemptively vary the pressure reaching the coupling in order to route torque to the rear, even if all four wheels are stationary. Theoretically, the system can apply 100 percent of the engine's torque to the rear wheels, but this situation is only possible if the front wheels are on wet ice and the rears are on pavement.
[...edmunds.com]
| 2008 Saab Turbo X Driven | Photos | Page 2 of 4 | Next>> |
Source: Edmunds | Read More: Test Drives , Cars For 2008
