TATA Motors Safari 2.2 VTT Dicor Owner's Manual - page 142
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M A I N T E N A N C E
EGR SYSTEM
TAKING CARE OF ENVIRONMENT :
Your vehicle is equipped with the EGR ( Exhaust Gas
Recirculation) System to reduce exhaust pollution.
EGR SYSTEM :
The engine is fitted with EGR valve, EGR pipe, EGR cooler
(where-ever applicable), vacuum modulator and associated
electrical circuitry. With this, controlled amount of exhaust
gas is mixed with intake air of the engine, in part load and
speed conditions. This helps in reducing harmful pollutants.
Close Couple Catalytic Converter :
Tata Safari is fitted with Diesel Oxidation Catalytic Converter
to reduce exhaust pollution. The two way Catalytic
Converter has coating of precious metals which enables
conversion of pollutants.
Care of the Catalytic Converter
The Catalytic Converter does not require any special
maintenance however, following precautions should be
taken for the effective functioning of the converter and to
avoid damage to the converter.
1 It is mandatory to use Diesel fuel with low sulphur
content (Refer recommended fuels). Use of any other
diesel fuel can increase the pollutants.
2 Avoid parking the vehicle over inflammable materials,
such as dry leaves, grass, etc., as the exhaust system
is hot enough to initiate “FIRE”.
Maintenance of Catalytic Converter
Catalytic Converter should be flushed by giving full throttle
(4 to 5 times) in standing condition of vehicle on daily basis.
In addition to this it is recommended to run the vehicle at
high speeds (80 to 100 kmph) for few km as this will help to
flush the carbon soot deposits from exhaust system and
catalytic converter. High speed running of the vehicle may
be done periodically to avoid chocking of catalytic converter.
Alternatively flushing operation for cleaning the catalytic
converter can be done by dry compressed air draft (3 to 4
bar) directed on the honeycomb structure of catalytic
converter (after removing from vehicle)
Close Coupled Catalytic Converter
Under Body Catalytic Converter