Downloaded from www.Manualslib.com manuals search engine OPERATION OF THE TURBOCHARGED
3.8L
V-6 (CODE 3) ENGINE
Turbocharging Gives You Extra Power ...
A turbocharger is ci device that supplies a conventional internal· combustio n
engin e with
extra power on demand . Basically . it's a pump powered by exhaust
~es.
··'···"'wha F tulbl>charging .does is to recover some of that exhaust gas energy to
increase engine power output. The turbocharger consists of
an eXhaust-gas
driven turbine which is coupled to a compressor in the intake system . As
engine speed and load increase, exhaust gases spin the turbine, which in turn
dri v
es the compre ssor and forces a denser ail/fuel mixture charge into the combustion chambers. This denser charge, when ignited in the conventional
manner, delivers more power per stroke of the piston than
the non
turbocharged engine.
Since the turbocharger is powered
by exhaust gases that normally go out the
tailpipe ,
in effect it recycles energy that would otherwise be wasted .
When we say it works "on demand ." we mean exactly that. When the
turbocharged
V-6 is driven under normal OQnditions, a normal air Ifuel mixture
reaches the cylinders . But , in a situation requiring extra power in passing, for
instance -pressing down on the
accelerator .speeds up the turbo, and the 3.8
liter V-6 engine increases its power output. When you litt your foot, the
turbocharger slows down again.
Turbocharging has long
been recognized as an answer to high-altitude
operation. Anon-turbocharged engine can
Jose as much as 25% of its poWer
at 8,000 feet. Turbocharging compensates for altitude changes, letting the
engine breathe "
sea level" air at high ; "thin air," anitudes . It restores
otherwise lost power, reduces . gearshitting
and the n9E)d for heavy pressure on the accelerator .
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