User's Manual

Truck TSS
Tire Safety System TSS for trucksfor trucks
Dept. BEE
Dokument Nr.:
Document no.:
Änderungsstand:
Status of
modification:
Index:
Index:
00
a
User Manual TSS
User Manual TSS
freigegeben am /date of release
2/20/06
3 Warning algorithm
The system monitors a target pressure, which is set by the operator, and a fixed minimum target pressure.
The target pressure is temperature evaluated. The fixed minimum target pressure is temperature independent.
The driver sets the target pressure (for cold tire condition) in a axle wise manner. This enables the driver to
adapt the pressure axle by axle dependent on the different axle load and tire size.
3.1 Warning limit “Nominal pressure minus 0,7bar”
Yellow warning is set if the measured pressure is 0,7bar lower the temperature evaluated target pressure or
0,7bar lower the fixed minimum pressure and 10 telegrams fulfilling this condition were received coherently.
3.2 Warning limit “Nominal Pressure minus 1,2bar”
Red warning is set if the measured pressure is 1,2bar lower the temperature evaluated target pressure or 1,2bar
lower the fixed minimum pressure and 2 telegrams fulfilling this condition were received coherently.
3.3 Warning “Fast Pressure loss – damaged tire”
Wheel electronic changes from normal transmitting mode to fast transmitting mode, if pressure change of
>0,4bar/Min. happens. ECU monitors pressure change. If pressure from last received normal transmitting mode
telegram to actual received fast transmitting mode telegram is lower 0,4bar and fast transmitting mode telegram
is received twice fast pressure loss warning is set and indicates damaged tire.