2017 CITROEN RELAY catalytic converter

34EMISSIOnS cOntrOLS
EOBD (European On Board Diagnosis) is
a diagnostics system which complies with,
among others, the standards on emissions
limits of:
-
CO (carbon monoxide),
-


HC (unburnt hydrocarbons),
-


NOx (nitrogen oxides), detected by

oxygen sensors placed downstream of
the catalytic converters,
-

particles.
tYrE undEr-InFLAt IO n d E t E ct IO n
System which automatically checks the
pressures of the tyres while driving.
The tyre under-inflation detection
system is an aid to driving which does
not replace the need for vigilance on
the part of the driver. This system does not avoid the need
to check the tyre pressures regularly
(including the spare wheel) and before a
long journey.
Driving with under-inflated tyres increases
fuel consumption.
The system continuously monitors the
pressures of the four tyres, as soon as the
vehicle is moving.
A pressure sensor is located in the valve of
each tyre.
The system triggers an alert if a drop in
pressure is detected in one or more tyres. The tyre pressures must be checked
when the tyres cold (vehicle stopped
for 1 hour or after driving for less then
6 miles (10 km) at moderate speed).
Otherwise, add 0.3 bar to the values
indicated on the label.
The tyre pressures for your vehicle can be
found on the tyre pressure label.
The driver is warned of any
malfunction of this emissions
control system by the illumination
of this warning lamp in the
instrument panel.
If this warning lamp comes on, have it
checked by a CITROËN dealer or a qualified
workshop.
To locate it, refer to the "Technical
data
- Identification markings" section.
Driving with under-inflated tyres
adversely affects road holding, extends
braking distances and causes premature
tyre wear, particularly under arduous
conditions (vehicle loaded, high speed, long
journey).
Instruments and controls

146
Operating fault
If this alert persists, do not ignore the
warning; it indicates that a fault has occurred
in the exhaust / particle filter system.
Have the whole system checked by a
CITROËN dealer or a qualified workshop.
If there is risk of blockage of the
filter, this warning lamp comes on
in the instrument panel.
Saturation /
r
egeneration
Because of the higher exhaust
gas temperature resulting from the
normal operation of the particle filter, it is
recommended that you do not park the
vehicle over inflammable materials (grass,
dry leaves, pine needles,

...) so as to avoid
any risk of fire.
Particle filter system (diesel)
An addition to the catalytic converter, this
filter makes an active contribution to the
preservation of air quality by the retaining
of the unburnt pollutant particles. Black
exhaust fumes are thus no longer emitted.
Operation
This filter, fitted in the exhaust system,
accumulates particles of soot. The engine
management unit controls the automatic
periodic elimination of the soot particles
(regeneration).
The regeneration procedure is invoked
according to the quantity of particles
accumulated and the driving conditions
of the vehicle. During this phase, you
may notice some unusual phenomena -
increased idling speed, cooling fan running,
increase in smoke and higher exhaust gas
temperature
- which does not affect the
operation of the vehicle or the environment. After prolonged idling or driving at very
low speeds, you may occasionally
notice water vapour being emitted from the
exhaust when accelerating. This is of no
consequence to the running of the vehicle or
to the environment. To regenerate the filter, it is advised to drive
as soon as possible, when traffic conditions
and the law permit, at a speed of at least

40 mph (around 60 km/h), with an engine
speed above 2 000 rpm for about fifteen
minutes (until the warning lamp and/or the
message disappears).
If possible, avoid switching off the engine
before the end of regeneration of the
filter; repeated interruptions could cause
premature deterioration of the engine oil. It
is not recommended to end regeneration of
the filter with the vehicle stationary.
This alert tells you that the particle filter
is starting to fill up (in conditions of urban
driving of exceptionally long duration: low
speeds, traffic jams etc.)
Levels and checks

150
BLuEHdI And AdBLuE®
AdBlue® is the brand name of the solution
needed for operation of the SCR system.
This solution is a urea-based fluid.
This fluid is non-flammable, colourless and
odourless. BlueHDI vehicles have a specific AdBlue
®
additive tank with a capacity of 15 litres.
It has an exterior filler located behind the
fuel filler flap below the fuel filler cap and
closed with a blue filler cap.
The aim of BlueHDi is to reduce the
emissions of NOx (nitrous oxides) in the
air by up to 90%, using a system that
converts NOx into water vapour and nitrogen
in a dedicated catalytic converter: SCR
(Selective Catalytic Reduction).
This objective meets the "Euro 6" emissions
standard adopted by the European Union
aimed at limiting the emissions of pollutants
from internal combustion engines.
The SCR technology used on BlueHDi
engines involves the injection of AdBlue®
into the exhaust system.
Scr technology
AdBlue®

191
EnGInES And GEAr BO x ES
diesel engine
Euro 6 2.0 litre BlueH
d i 110
2.0 litre BlueH d i 110 S&S2.0 litre BlueH
d i 130
2.0 litre BlueH d i 130 S&S2.0 litre BlueH
d i 160
2.0 litre BlueH d i 160 S&S
Gearbox Manual
(6-speed)
Maximum power (hp) 11 0130 160
EU standard maximum power (kW) 8196120
Cubic capacity (cc) 1 9971 9971 997
Bore x stroke (mm) 85 x 8885 x 8885 x 88
Maximum power engine speed (rpm) 3 5003 7503 750
EU standard maximum torque (Nm) 300340350
Maximum torque engine speed (rpm) 1 5001 7501 750
Fuel DieselDieselDiesel
Catalytic converter Ye sYe sYe s
Particle filter Ye sYe sYe s
Engine oil capacity (in litres)
after draining and replacing the filter 6.6
6.66.6
9
tEcHnIcAL dAtA
diesel engines

192diesel engine
Euro 4 / Euro 5
(
d epending on the country of sale) 2.2 litre H
d i 1102
.2 litre H
d i 130
2.2 litre e-H
d i 1302
.2 litre H
d i 150
2.2 litre e-H d i 1503 litre Hdi 180
Gearbox Manual

(6-speed)
Maximum power (hp) 11
0 130 150180
EU standard maximum power (kW) 819611 0130
Cubic capacity (cc) 2 1982 1982 1982 999
Bore x stroke (mm) 86 x 94.686 x 94.686 x 94.6 95.8 x 104
Max power engine speed (rpm) 3 5003

500 3

500 3 600
EU standard max torque (Nm) 250320350400
Max torque engine speed (rpm) 1

500 2

000 2

000 1 400
Fuel DieselDieselDieselDiesel
Catalytic converter Ye sYe sYe sYe s
Particle filter Ye sNoYe s Ye sYe s
Engine oil capacity (in litres)
after draining and replacing the oil filter 6.2
6.26.29
diesel engines