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2.6 Turbocharger
Know Your Vehicle
Turbocharger (Euro II)
Lubrication of the turbocharger
Rotor assembly of turbocharger is
supported by two floating lead
bronze sleeve bearings in the
bearing housing. These bearings are
lubricated with finest filtered and
cooled oil from lubrication system.
There is a heat shield arrangement
provided between turbine housing
and bearing housing to avoid heating
of the bearings.
Advantages of turbocharger
Turbocharged engine has following
advantages over naturally aspirated
engine of same size and weight.
1. Increased power is obtained with
the same engine dimensions
thereby increasing the power to
weight ratio. Thus, the engine is
lighter and payload value of the
vehicle is improved.
2. A turbocharged engine has a
lower specific fuel consumption,
so the vehicle consumes less fuel.
3. Turbocharger reduces black
smoke in the exhaust.
4. Loss of engine power at higher
altitudes is much less making it
ideal under all operating
conditions. Especially in hilly
areas, payload capacity is further
improved by this aspect.
5. Turbocharger acts as an additional
silencer on exhaust side, thus
reducing engine noise.
Maintenance of turbocharger
No adjustments or repairs are to be
carried out on the turbocharger. In
case of doubtful performance from
the engine because of
malfunctioning of turbocharger, take
your vehicle to Tata authorised workshop.
Following precautionary measures
should be taken to obtain trouble
free performance.
1. During regular engine inspection,
look carefully for any oil leakage
at the oil inlet banjo connection
on bearing housing. Do not run
engine unless leakage at this
point is rectified.
2. Do not stop the engine suddenly
as it may damage rotor bearings.
Allow engine to idle for atleast
3 minutes before switching it off.
Similarly, do not increase engine
speed suddenly.
Run the engine at low idle speed
for atleast 3 minutes after starting
to build up oil pressure before
increasing engine speed.
3. Since the speed of rotor assembly
is tremendously high, (nearly
1,00,000 rpm) it requires finest
filtered oil. Therefore, ensure
cleanliness of engine oil by
adhering to regular schedules of
engine oil and oil filter cartridge
change intervals.
4. As the unfiltered dust particles
entering compressor housing
may prove dangerous, make sure
that there is no leakage in air
intake system and that air filter
elements are in good condition
and sealings are perfect.
5. Insist on use of only
recommended grade of engine
oil, genuine engine oil filter and
air filter cartridges.
