56
TURBOCHARGER
CAUTION !
A turbocharger is an exhaust-driven mechanical device
that boost engine power by pumping more air into the
engine. A turbocharger uses a pair of fan-like castings
mounted on a common shaft. One (called the turbine) is
piped to the exhaust, while the other (the compressor)
is piped to the engine intake. The flow of exhaust spins
the turbine, which causes the compressor to turn. The
compressor serves to blow air into the engine at a
greater rate than it can pull it in on its own. The greater
volume of air can be mixed with a greater volume of fuel,
which increases the power output.
Principle of operation of a turbocharger.
TURBO SERVICE
Engine turbochargers are designed to provide long
years of trouble free service, which if required, can
only be performed by a specialized workshop. In view
to maintain turbochargers performances for as long as
possible, some basic rules must be followed.
Changing or cleaning the air filters on a regular basis is
a good way to keep debris from causing problems with
the intake side of turbochargers.
A turbocharged engine will definitely need more oil
changes than an ordinary atmospheric one, as the
turbines axle requires excellent lubrication. For this
reason, oil characteristics must be followed closely.
Never use low grade bargain lubrication oil.
Turbochargers get very hot when engine is running and
a protective metal shield or thermal sleeve is always
affixed onto the exhaust side to prevent burns. Never
remove these shields.
Do not get confused : a turbocharger is driven by
exhaust gases. On a supercharger, the air intake turbine
is driven by a belt. In addition to a rotation speed far
lower compared to a turbocharger, an amount of output
power is subtracted fom the engine because of the drive
system.
Above picture: N9CR2 Turbo & Air intake.
There is no serviceable part for the end user
inside turbochargers. Any attempt to
disassembling would lead to a total failure.
S08
MAINTENANCE
Summary of Contents for N9.330 CR2
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Page 39: ...39 S06 COMPONENTS ENGINE VIEWS N9 CR2 SERIES 1 6 12 19 10 3 13 8 16 2 14 5 18...
Page 40: ...40 ENGINE VIEWS N9 CR2 SERIES S06 COMPONENTS 5 21 12 20...
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