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 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.