Catalytic Converter; Egr System - TATA Motors Sumo Gold CR-4 Owner's Manual & Service Book

HANDLING
CATALYTIC CONVERTER : (if fitted)
Your vehicle 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 precaution should be taken
for the effective functioning of the converter and to avoid
damage to the Converter.
It is mandatory to use Diesel fuel with sulphur content less
than 0.25%. Use of any other diesel fuel can increase the
pollutants.
WARNING
Avoid parking the vehicle over inflammable materials, such
as dry leaves, grass etc., as the exhaust system is hot
enough to initiate "FIRE".
TAKING CARE OF ENVIRONMENT :
Your vehicle is equipped with the EGR (Exhaust Gas
Recirculation) System.
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CATALYTIC CONVERTOR & EGR SYSTEM

Catalytic Converter

EGR System

The 497SPTC engine has an Exhaust Gas Recirculation
system comprising of EGR valve, EGR Tube, Vacuum
hoses, Electroneumatic switch, Potentionmeter on FIP
throttle lever, EGR control unit and associated electrical
circuitry.
With this, controlled amount of exhaust gas is mixed in air
intake of the engine, which helps in reducing harmful
pollutants.