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If you need
more power like on a Mustang or Porsche, consider using two
Aerocharger®s
. Sometimes you will find an advantage in the simpler
installation of two rather than all the extra plumbing necessary to
accommodate one turbo.
Understanding Maps
When looking at the maps below, keep in mind they
were created in a lab under idea conditions. Your installation will
be adding an air cleaner, plumbing and muffler. Your actual results
will be different, but these maps serve as a good starting place. By
answering just a few questions, we can point you to the right trim
size for the compressor and turbine.
Surge Line
Surge is most commonly experienced when one of
two situations exist. The first and most damaging is surge underload. It can be an indication that your compressor is too large.
Surge is also commonly experienced when the throttle is quickly
closed after boosting. This occurs because mass flow is drastically
reduced as the throttle is closed, but the turbo is still spinning
and generating boost. This immediately drives the operating point to
the far left of the compressor map, right into surge.
Surge will decay once the turbo speed finally slows
enough to reduce the boost and move the operating point back into
the stable region.
The surge line is the left hand boundary of the
compressor maps below. Operation to the left of this line represents
a region of flow instability. On a conventional turbocharger this
region is characterized by mild flutter to wildly fluctuating boost
and “barking” from the compressor.
The Aerocharger has a soft surge. Soft surge
line means that the turbo flutter is mild and it will recover quick
and the surge is hardly noticeable. A hard surge mean there is a
noticeable and sudden flutter of power...NOT good and disastrous on
a motorcycle in a corner rolling on the power for a fast exit!
We will be adding more maps.
CLICK ON MAP
to enlarge |