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Good
operating practices |
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Operators
and owners can help themselves to get maximum service life from their
turbochargers if a few good practices are followed:-
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Start
Up
When starting the engine use minimum throttle and run in idle mode for approximately
one minute. Full working oil pressure builds up within seconds but it is useful
to allow the turbocharger moving parts to warm up under good lubricating conditions.
Revving the engine within the first few seconds of start up causes the turbocharger
to rotate at high speeds with marginal lubrication which can lead to early failure
of the turbocharger.
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After
Servicing
After servicing the engine or turbocharger ensure that the
turbocharger is pre-lubed by adding clean engine oil into the turbocharger
oil inlet until full. After pre-lubing crank the engine without firing
(engine/fuel pump stop out) to allow oil to circulate through the full
system under pressure. On starting the engine, run at idle for a few
minutes to ensure the oil and bearing systems are operating satisfactorily.
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Low
Air Temperatures & Inactive Operation
If the engine has been inactive for some time or the air temperature
is very low, crank the engine first and then run at idle. This allows
the oil to circulate throughout the full system before high loads and
speeds are applied to engine and turbocharger.
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Shut
Down
Before shutting your engine down, let the turbocharger cool
down. When an engine runs at maximum power/high torque, the turbocharger
is operating at very high temperatures and speeds. Hot shut down can
cause reduced service life which is avoidable by a minute or two of
idling. Most mobile equipment applications include an adequate cooling
period during parking or mooring procedures.
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See
hot shutdown graph.
Allow
your engine to idle for 1-5 minutes to allow the high temperatures
and speed to reduce and so prolong the life of your turbocharger |
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Engine
Idle
Avoid running your engine for long periods in idle mode (greater
than 20-30 minutes). Under idling conditions low pressures are generated
in the turbocharger which can cause oil mist to leak past seals into
the two end housings. Although no real harm is done to the turbocharger,
as load is applied temperatures increase and the oil will start to burn
off and cause blue smoke emission problems. |
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;)