Structure and function, carrier vehicle
Pantera 4502 CP1_E3A_E4 BAG0166.5
The particle filter must be replaced after 8000 operational hours when
the message appears on the AMADRIVE.
An ash load of 100 % is then reached (see AMADRIVE operating
data). Regeneration is no longer possible.
5.2.2 Reduction of the nitrogen oxides in the exhaust gas (SCR)
The reduction of the nitrogen oxides in the exhaust gas is called SCR
(selective catalytic reduction).
In doing so, a DEF urea solution (diesel exhaust fluid) is injected into
the exhaust gas system.
The DEF consumption represents approx. 2.5 % of the diesel con-
sumption.
If a serious error occurs, the system reacts by reducing the power of
the motor.
The DEF urea solution is sold e.g. under the brand names AdBlue,
AUS 32 and Aria 32.
Protective gloves and protective goggles must be worn when han-
dling DEF.
DEF crystallises at -11 °C, and above +35 °C, a hydrolysis reaction
begins (degradation into ammonia and carbon dioxide).
The DEF tank must only be filled with DEF. Filling with other media
can result in destruction of the system.
System monitoring
Emission-relevant errors include:
• DEF fill level
• Catalyser efficiency / DEF® quality
• Manipulation
• System error
An acoustic signal is issued if there is an error.
If a serious error occurs, or if an error is not rectified, the system re-
acts by reducing the power of the motor.
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