TATA Motors Safari 2021, Руководство пользователя, Страница: 257 / 308

DPF Warning Lamp
The lamp blinks constantly to
indicate that the DPF needs to
eliminate the trapped pollu-
tants (particulate matter) through the re-
generation process, it therefore does not
indicate a malfunction. The lamp remains
off during the entire DPF regeneration and
it lamps up only when driving conditions
require the driver to be notified. To switch
off the lamp, keep the car running until re-
generation is complete (ideally at 3
rd
gear,
60 kmph with engine speed over 2000
rpm). The process normally takes about
20 minutes.
Note: Failure to obey the correct proce-
dure for long distance when the DPF lamp
comes ON can cause the warning lamp
(MIL) to come ON. In that case, please
contact nearest TATA authorized service
center to restore correct DPF operation.
EXHAUST AFTER TREATMENT
SYSTEM
Exhaust after treatment consists of below
components:
Diesel Oxidation Catalyst (DOC) 1.
Diesel Particulate Filter (DPF) 2.
Selective Catalyst Reduction (SCR) 3.
Various Sensors and Actuators. 4.
The exhaust gas coming from the engine
first passes through the DOC and then
through DPF.
DPF is a filter, which filters carbon soot in
the exhaust gas. DOC and DPF contains
precious metals which converts hydrocar-
bons, carbon monoxide etc. in the exhaust
gas to harmless constituents.
Additionally DPF also removes most of the
carbon soot particles in the exhaust gas.
The collected carbon soot in the DPF is re-
generated to clean the filter.
In order to reduce the NOx levels even fur-
ther, SCR system is used. In SCR system,
DEF is injected in the exhaust stream.
With the help of injected ammonia in the
DEF, NOx is converted into harmless con-
WARNING
Avoid parking of vehicle over inflamma-
ble materials, such as dry leaves; grass
etc. as exhaust system is hot enough to
initiate fire.
WARNING
Ensure exhaust system is not •
blocked and is free from obstruction.
Blockages in the exhaust can create •
backpressure, low top speed, poor
pick up, black smoke, carbon build
up and low mileage and can affect
power output of the engine and the
emission levels.
WARNING
The maximum sulphur content of the
diesel fuel must not exceed 0.001% (10
parts per million). Failure to comply with
the standards may damage engine
components and the exhaust after-
treatment system.
MAINTENANCE AND SERVICES
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