BMW E61 Sports Wagon 530xiT, Руководство пользователя

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Fading Compensation
High temperatures (> 550°C) can occur at the brake discs when driving downhill over
long periods or as the result of extreme multiple braking operations ( > 80 bar). These
high temperatures cause a change in the coefficient of friction of the brake pads resulting
in the braking effect diminishing (fading).
For this purpose, the temperature of the brake disc is calculated by means of a tempera-
ture model contained in the DXC8+ software. The braking pressure applied by the driver
is measured by the delivery pressure sensor and compared with the current vehicle
deceleration (target/actual value).
When the braking effect diminishes, the fading compensation provides assistance for the
driver in that pressure is additionally built up by the DSC module.
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E61 Sports Wagon
Brake Disc with Fading