RE: Veyron DSG 'box
The power generated in the engine is transferred to the flange-mounted direct manual gearbox (DSG). The torque and speed is then transmitted, through the gearing of seven forward and one reverse gear, via a universal drive to the front axle gearbox and via a second universal drive, along the right side of the engine to the rear axle gearbox. Both the DSG and both axle gearbox housings are of lightweight aluminum construction. The drive power is distributed to the front and rear axles by means of a Haldex coupling, an actively-controlled multi-disk, inter-axle lock directly connected to the front axle gearbox. The following front axle differential distributes the power to both front wheels. In the rear axle differential the power is distributed to the rear wheels via a bevel gear and a further differential. In addition, an actively-controlled, hydraulically-actuated, multi-disk differential lock is installed here. When necessary, it prevents speed differences between the rear wheels and ensures optimum directional stability when accelerating and when cornering under load. All load distribution functions are completely automatic and are undetected by the driver.
