1010
183
C4-2_en_Chap10_verification_ed01-2014
ADBLUE® ADDITIVE AND SCR SYSTEM
FOR
B
LUE HD I D IESEL
ENGINES
To assure respect for the environment and
conformity with the new Euro 6
emissions
standard,
without
adversely
af
fecting
the
performance
or
fuel
con
-
sumption
of
Diesel
engines,
CITROËN
has
taken
the
decision
to
equip
its
ve
-
hicles
with
an
ef
fective
system
that
associates SCR (Selective Catalytic
Reduction)
with
a
particle
filter
(F
AP)
for
the treatment of exhaust gases.
Presentation of the SCR system
Using an additive called AdBlue® con-
taining
urea,
a
catalytic
converter
turns
up
to
85%
of
nitrous
oxides
(NOx)
into
nitrogen
and
water
,
which
are
harmless
to
health
and
the
environment. The
AdBlue® additive
is held in a spe -
cial
tank
located under the boot at the
rear
of
the
vehicle.
It
has
a
capacity
of
17
litres:
this
provides
a
driving
range
of
about
12
500
miles
(20
000
km),
after
which
an
alert
is
triggered
warning
you
when
the
reserve
remaining
is
enough
for
just
1
500 miles (2 400 km).
During
each
scheduled
service
of
your
vehicle
by
a
CITROËN
dealer
or
a
qual
-
ified
workshop,
the
AdBlue® additive tank
is
refilled
in
order
to
allow normal
operation
of
the
SCR
system.
If
the
estimated
mileage
between
two
services
is
greater
than
12
500
miles
(20
000
km),
we
recommend
that
you
go
to
a
CITROËN
dealer
or
a
qualified
workshop
to
have
the
necessary
top-up
carried
out. Once
the
AdBlue® tank is
empty , a
system
required
by regulations
prevents
starting
of the engine.
If the SCR
is faulty, the level of
emissions
from
your
vehicle
will
no
longer
meet
the
Euro
6
stan
-
dard:
you
vehicle
becomes
pol
-
luting.
In
the
event
of
a
confirmed
fault
with
the
SCR
system,
you
must
go
to
a
CITROËN
dealer
or
a
qualified
workshop
as
soon
as
possible:
after
a
running
dis
-
tance
of
650
miles
(1
100
km),
a
system
will
be
triggered
au
-
tomatically
to
prevent
engine
starting.
CHECKS
