Porsche 911 GT3 -, Брошюра

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The new 911 GT3 | Chassis
Newly developed and available
as an option is the new dynamic
engine mount system*. This
electronically controlled system
minimises noticeable oscillations
and vibrations in the whole drive
system, particularly the engine.
The engine is bolted to the body
using two mounts. According to
Newton’s law of inertia, a body
will continue to move in a uniform
straight line unless it is made
to change its direction by a force
acting upon it. Put more simply:
when you are driving into a bend
in your new 911 GT3, the vehicle
will follow your steering but,
at first, the mass of the engine
won’t. This means that the rear
of the vehicle is pushed outwards
because of the inert forces from
the engine’s mass acting on it.
The new dynamic engine mount
system minimises this effect.
The steering angle longitudinal
and lateral acceleration values are
constantly recorded by sensors
and the stiffness of the two engine
mounts is changed automatically
according to the driving style. This
is achieved using a magnetisable
(magnetorheological) fluid and an
electrically generated magnetic
field. The magnetisable particles
align with each other and the
fluid’s viscosity changes. This
alters the stiffness and absorption
of the engine mounts: softer for
greater comfort and less vibration
when driving normally, harder for
a more direct driving feel when
driving more sportily. Similar
characteristics to those of the
911 GT3 race cars where the
engine is bolted directly to the
body.
The dynamic engine mount
system also reduces the vertical
oscillations of the engine when
We've always considered the laws of physics a challenge.
Thankfully our engineer's haven't.
New dynamic engine mount system.
accelerating under full load. The
result: greater and more uniform
force on the rear axle, increased
traction and better acceleration.
In everyday driving and on the
racetrack, this means more
stability in all driving situations.
* Not available until 09/2009.
Dynamic engine mount system