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ESP
The Bosch 8.0 ESP system previously featured in the A6 saloon will also be used in the Audi A6 Avant
`05.Several new functions will be implemented for use of the Bosch 8.0 ESP system in the Audi A6 Avant ´05.
To i mplemen t these auxiliary functions, the processing power of the ESP control unit was enhanced by
increasing the clock frequency to 60 MHz from 48 MHz. The new control unit will also be rolled out at the same
time in the A6 saloon.
Modified hydraulic brake assistant control for vehicles with acc
When the vehicle is travelling, acc continuously monitors objects in front of the vehicle within the range of the
radar sensor. The object detection function remains active even after the acc function has been deactivated by
the driver. The system has the capability to assess the "hazard potential" of a traffic situation. It does so by
evaluating a variety of parameters, including the number, position and speed of objects detected, the
distance to the objects detected, own vehicle speed etc.If a "potential hazard" is identified, the brake system is
prefilled and the cut-in threshold of the brake assistant is reduced.
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If the brakes are applied hard, the hazard warning
light system is activated automatically to alert
traffic following on behind. On vehicles with the
Highline trim, the surfaces of the brake lights are
also enlarged, depending on the country
specification.
Automatic activation of the hazard warning light system
Extended understeer correction
When a vehicle is understeering, it can be stabilised by braking the wheels on the inside of the corner.
However, if the cornering speed of the vehicle is too high to achieve the required curve radius, this action
alone will not be sufficient. In such case, all four wheels are braked and engine torque is simultaneously
reduced. A slightly higher brake pressure is applied to the inside rear wheel. In this way, the road speed of the
vehicle is reduced and the vehicle is stabilised.
