Man V28/32S

Specification for engine supplies
Specification of urea solution
Use of good quality urea solution is essential for the
operation of a SCR catalyst. Using urea solution not
complying with the specification below e.g. agricul-
tural urea, can either cause direct operational prob-
lems or long-term problems like deactivation of the
catalyst.
The overall SCR system is designed for one of
the two possible urea solution qualities (32.5 %
AdBlue® or 40 % concentration) as listed in the
tables below. This must be taken into account
when ordering. The mixture of the both different
solutions is not permissible!
Urea solution
concentration
[%]
39 - 41
ISO 22241-2
Annex C
Density at 20 °C
[g/cm
3
]
1.105-1.115 DIN EN ISO 12185
Refractive index at
20 °C
1.3930-1.3962 ISO 22241-2
Annex C
Biuret [%] max. 0.5 ISO 22241-2
Annex E
Alkality as NH
3
[%] max. 0.5 ISO 22241-2
Annex D
Aldehyde [mg/kg] max. 10 ISO 22241-2
Annex F
Insolubles [mg/kg] max. 20 ISO 22241-2
Annex G
Phosphorus (as
PO
4
) [mg/kg]
max. 0.5 ISO 22241-2
Annex H
Calcium [mg/kg] max. 0.5 ISO 22241-2
Annex I
Iron [mg/kg] max. 0.5 ISO 22241-2
Annex I
Magnesium
[mg/kg]
max. 0.5 ISO 22241-2
Annex I
MAN Diesel & Turbo
3700467-8.1
Page 9 (17)
SCR (Selective Catalytic Reduction)
B1600 0
V28/32S, L28/32S, L28/32H, L27/38S, L27/38, L23/30S, L23/30H, L21/31S,
L21/31, L16/24S, L16/24