UD Trucks QUESTER Series, Руководство пользователя

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8.INSPECTION AND MAINTENANCE
8-65
8.18 Handling of exhaust (applicable for Euro IV/China IV or equivalent standard)
Exhaust emission control system
T h e a f t e r - t r e a t m e n t s y s t e m t h a t
cleans the exhaust gas uses urea
w a t e r s o l u t i o n ( A d B l u e ® ) i n t h e
Silencer to decompose the NOx in
t h e e x h a u s t g a s i n t o w a t e r a n d
nitrogen to reduce NOx emission.
Dosing system for emission con-
trol
If a fault occurs in the NOx dosing
system then a message is shown on
the display together with the yellow
warning lamp (CHECK). The urea
d o s i n g s y s t e m ( s u p p l y m o d u l e ,
dosing module) continues to operate
for approximately 120 seconds after
the ignition is turned OFF. Therefore,
wait for at least 120 seconds before
disconnecting the battery cable or
electrical system connectors when
servicing the vehicle.
Handling of the silencer
The silencer is specially integrated
w i t h a c a t a l y s t w h i c h d o e s n o t
require inspection and servicing. It
should be replaced if there is any
external damage. Replace it with UD
Genuine Parts.
Do not kick or strike the silencer.
The silencer has the following
characteristics.
• The after-treatment system
c l e a n s a n d d i s c h a r g e s t h e
exhaust gas, so the exhaust gas
smells differently than that of con-
ventional diesel vehicles.
• White vapour comes out from the
exhaust pipe when the engine is
started. Do not mistake this for a
malfunction.
NOTE
Not applicable for Euro III/China
III or equivalent models.
CAUTION
Do not climb, stand or strike
the silencer. Failure to comply
will damage the catalyst inside