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Is this a
Whipple©? Looking at the
supercharging system on the MarineDiesel one can draw comparisons to that of a
Whipple©, Kenny
Bell©, or
Mercruiser’s© latest offering on
the Verado© by Eaton©. Just as certain products have been granted name sakes such as
Kleenex© with tissue paper,
and Jello© with gelatin, certain
retailers of superchargers have found the same. However, the truth is that all
of these particular systems are based on the operating principals of a Lysholm
design. The differing factor with MarineDiesel is the specific dispalcement and
rotor seals having been specifically developed and offered soley for the
MarineDiesel product line. MarineDiesel’s autorotor supercharger is also of a
Lysholm design and can be compared to a GM roots supercharger in that it has two
rotating, spiral cut meshing rotors. However the principal of operation with an
Autorotor supercharger is that it operates in a completely opposite manner than
a GM Roots type supercharger does. An Autorotor supercharger is designed using
two screw type lobes, one convex screw-shaped lobe and the other, a larger
concave screw-shaped cavity. The screw rotators operate in opposite directions
from one another, drawing air from one end of the housing and pumping it through
the housing longitudinally between the rotors and then dispersing it from the
other end of the case. The air is not only pumped or moved from one end to the
other by the intermeshing screw action, it is also squeezed between the rotors
to compress it. This system is known as a positive displacement supercharger. It
has no contacting parts or frictional drag other than the rotor gears (friction
causes heat, which negatively effects horsepower) therefore, it needs no
internal lubrication and is perfectly balanced like a roots blower. Still it
affords internal compression similar to a vane supercharger, which greatly
increases the adiabatic and volumetric efficiency of the engine.
Advantages of Supercharging vs Turbo
-
Superior Low RPM performance due to not having to face the issue of
“Turbo
Lag” as a result of having to spool a turbo-charger.
- This low RPM
torque advantage in combination with up to 30% larger
engine displacement
combines to provide engine performance far
beyond that of excessively
boosted smaller displacement offerings.
- Utilizing a supercharger
allows MarineDiesel to offer the industry’s
only marine diesel engine to
utilize 4” center-rise style exhaust.
- MarineDiesel utilizies a separate
lubrication system bewteen the
engine and supercharger.
-
MarineDiesel’s supercharging system generates approximately 2.5 psi
boost
at idle which yields very little smoke and smell at low rpm.
- Due to the
V8 engine configuration in combination with MarineDiesel’s
unique
intercooled supercharging system, exhaust tone is nearly
identical to that
of a big block V8 gas engine. Select link to
listen
Because of the above mentioned explanation, MarineDiesel can
back up the claim that they offer the only diesel engine on the marine market that
not only fits as a direct replacement for V8 gas engines, but also delivers the comparable performance..
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